Bring in Adrian's JDBC driver as an interface

src/interfaces/jdbc/JDBC_Test.java

+import java.io.*;
+import java.lang.*;
+import java.sql.*;
+
+class JDBC_Test
+{
+        public JDBC_Test() 
+	{
+	}
+
+	public static void main(String argv[])
+	{
+		String url = new String(argv[0]);
+		Connection db;
+		Statement s;
+		ResultSet rs;
+
+		// Load the driver
+		try
+		{
+			Class.forName("postgresql.Driver");
+		} catch (ClassNotFoundException e) {
+			System.err.println("Exception: " + e.toString());
+		}
+
+		// Lets do a few things -- it doesn't do everything, but
+		// it tests out basic functionality
+		try
+		{
+		System.out.println("Connecting to Database URL = " + url);
+		db = DriverManager.getConnection(url, "adrian", "");
+		System.out.println("Connected...Now creating a statement");
+		s = db.createStatement();
+		System.out.println("Ok...now we will create a table");
+		s.executeUpdate("create table test (a int2, b int2)");
+		System.out.println("Now we will insert some columns");
+		s.executeUpdate("insert into test values (1, 1)");
+		s.executeUpdate("insert into test values (2, 1)");
+		s.executeUpdate("insert into test values (3, 1)");
+		System.out.println("Inserted some data");
+		System.out.println("Now lets try a select");
+		rs = s.executeQuery("select a, b from test");
+		System.out.println("Back from the select...the following are results");
+		int i = 0;
+		while (rs.next())
+		{
+			int a = rs.getInt("a");
+			int b = rs.getInt("b");
+			System.out.println("row " + i + "	" + a + "	" + b);
+			i++;
+		}
+		System.out.println("Ok...dropping the table");
+		s.executeUpdate("drop table test");
+		System.out.println("Now closing the connection");
+		s.close();
+		db.close();
+		} catch (SQLException e) {
+		System.out.println("Exception: " + e.toString());
+		}
+	}
+}

src/interfaces/jdbc/postgresql/CallableStatement.java

+package postgresql;
+
+import java.math.*;
+import java.sql.*;
+
+/**
+ * @version 1.0 15-APR-1997
+ * @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
+ *
+ * CallableStatement is used to execute SQL stored procedures.
+ *
+ * JDBC provides a stored procedure SQL escape that allows stored procedures
+ * to be called in a standard way for all RDBMS's.  This escape syntax has
+ * one form that includes a result parameter and one that does not.  If used,
+ * the result parameter must be generated as an OUT parameter.  The other
+ * parameters may be used for input, output or both.  Parameters are refered
+ * to sequentially, by number.  The first parameter is 1.
+ *
+ * <PRE>
+ *	{?= call <procedure-name>[<arg1>,<arg2>, ...]}
+ *	{call <procedure-name>[<arg1>,<arg2>, ...]}
+ * </PRE>
+ *
+ * IN parameters are set using the set methods inherited from 
+ * PreparedStatement.  The type of all OUT parameters must be registered
+ * prior to executing the stored procedure; their values are retrieved
+ * after execution via the get methods provided here.
+ *
+ * A CallableStatement may return a ResultSet or multiple ResultSets.  Multiple
+ * ResultSets are handled using operations inherited from Statement.
+ *
+ * For maximum portability, a call's ResultSets and update counts should be
+ * processed prior to getting the values of output parameters.
+ *
+ * @see java.sql.Connection#prepareCall
+ * @see java.sql.ResultSet
+ * @see java.sql.CallableStatement
+ */
+public class CallableStatement implements java.sql.CallableStatement 
+{
+	public void registerOutParameter (int paramterIndex, int sqlType) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public void registerOutParameter (int parameterIndex, int sqlType, int scale) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean wasNull () throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public String getString (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean getBoolean (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public byte getByte (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public short getShort (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public int getInt (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public long getLong (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public float getFloat (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public double getDouble (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public BigDecimal getBigDecimal (int parameterIndex, int scale) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public byte[] getBytes (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public Date getDate (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public Time getTime (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public Timestamp getTimestamp (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public Object getObject (int parameterIndex) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+}

src/interfaces/jdbc/postgresql/Connection.java

+package postgresql;
+
+import java.io.*;
+import java.lang.*;
+import java.net.*;
+import java.util.*;
+import java.sql.*;
+import postgresql.*;
+
+/**
+ * @version 1.0 15-APR-1997
+ * @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
+ *
+ * A Connection represents a session with a specific database.  Within the
+ * context of a Connection, SQL statements are executed and results are
+ * returned.
+ *
+ * A Connection's database is able to provide information describing
+ * its tables, its supported SQL grammar, its stored procedures, the
+ * capabilities of this connection, etc.  This information is obtained
+ * with the getMetaData method.
+ *
+ * <B>Note:</B> By default, the Connection automatically commits changes
+ * after executing each statement.  If auto-commit has been disabled, an
+ * explicit commit must be done or database changes will not be saved.
+ *
+ * @see java.sql.Connection
+ */
+public class Connection implements java.sql.Connection 
+{
+	private PG_Stream pg_stream;
+
+	private String PG_HOST;
+	private int PG_PORT;
+	private String PG_USER;
+	private String PG_PASSWORD;
+	private String PG_DATABASE;
+	private boolean PG_STATUS;
+
+	public boolean CONNECTION_OK = true;
+	public boolean CONNECTION_BAD = false;
+
+	private int STARTUP_CODE = 7;
+
+	private boolean autoCommit = true;
+	private boolean readOnly = false;
+	
+	private Driver this_driver;
+	private String this_url;
+	private String cursor = null;	// The positioned update cursor name
+
+	/**
+	 * Connect to a PostgreSQL database back end.
+	 *
+	 * @param host the hostname of the database back end
+	 * @param port the port number of the postmaster process
+	 * @param info a Properties[] thing of the user and password
+	 * @param database the database to connect to
+	 * @param u the URL of the connection
+	 * @param d the Driver instantation of the connection
+	 * @return a valid connection profile
+	 * @exception SQLException if a database access error occurs
+	 */
+	public Connection(String host, int port, Properties info, String database, String url, Driver d) throws SQLException
+	{
+		int len = 288;			// Length of a startup packet
+
+		this_driver = d;
+		this_url = new String(url);
+		PG_DATABASE = new String(database);
+		PG_PASSWORD = new String(info.getProperty("password"));
+		PG_USER = new String(info.getProperty("user"));
+		PG_PORT = port;
+		PG_HOST = new String(host);
+		PG_STATUS = CONNECTION_BAD;
+
+		try
+		{
+			pg_stream = new PG_Stream(host, port);
+		} catch (IOException e) {
+			throw new SQLException ("Connection failed: " + e.toString());
+		}
+		
+		// Now we need to construct and send a startup packet
+		try
+		{
+			pg_stream.SendInteger(len, 4);			len -= 4;
+			pg_stream.SendInteger(STARTUP_CODE, 4);		len -= 4;
+			pg_stream.Send(database.getBytes(), 64);	len -= 64;
+			pg_stream.Send(PG_USER.getBytes(), len);
+		} catch (IOException e) {
+			throw new SQLException("Connection failed: " + e.toString());
+		}
+		ExecSQL(" ");				// Test connection
+		PG_STATUS = CONNECTION_OK;
+	}
+
+	/**
+	 * SQL statements without parameters are normally executed using
+	 * Statement objects.  If the same SQL statement is executed many
+	 * times, it is more efficient to use a PreparedStatement
+	 *
+	 * @return a new Statement object
+	 * @exception SQLException passed through from the constructor
+	 */
+	public java.sql.Statement createStatement() throws SQLException
+	{
+		return new Statement(this);
+	}
+
+	/**
+	 * A SQL statement with or without IN parameters can be pre-compiled
+	 * and stored in a PreparedStatement object.  This object can then
+	 * be used to efficiently execute this statement multiple times.
+	 *
+	 * <B>Note:</B> This method is optimized for handling parametric
+	 * SQL statements that benefit from precompilation if the drivers
+	 * supports precompilation.  PostgreSQL does not support precompilation.
+	 * In this case, the statement is not sent to the database until the
+	 * PreparedStatement is executed.  This has no direct effect on users;
+	 * however it does affect which method throws certain SQLExceptions
+	 *
+	 * @param sql a SQL statement that may contain one or more '?' IN
+	 *	parameter placeholders
+	 * @return a new PreparedStatement object containing the pre-compiled
+	 *	statement.
+	 * @exception SQLException if a database access error occurs.
+	 */
+	public java.sql.PreparedStatement prepareStatement(String sql) throws SQLException
+	{
+		return new PreparedStatement(this, sql);
+	}
+
+	/**
+	 * A SQL stored procedure call statement is handled by creating a
+	 * CallableStatement for it.  The CallableStatement provides methods
+	 * for setting up its IN and OUT parameters and methods for executing
+	 * it.
+	 *
+	 * <B>Note:</B> This method is optimised for handling stored procedure
+	 * call statements.  Some drivers may send the call statement to the
+	 * database when the prepareCall is done; others may wait until the
+	 * CallableStatement is executed.  This has no direct effect on users;
+	 * however, it does affect which method throws certain SQLExceptions
+	 *
+	 * @param sql a SQL statement that may contain one or more '?' parameter
+	 *	placeholders.  Typically this statement is a JDBC function call
+	 *	escape string.
+	 * @return a new CallableStatement object containing the pre-compiled
+	 *	SQL statement
+	 * @exception SQLException if a database access error occurs
+	 */
+	public java.sql.CallableStatement prepareCall(String sql) throws SQLException
+	{
+		throw new SQLException("Callable Statements are not supported at this time");
+//		return new CallableStatement(this, sql);
+	}
+
+	/**
+	 * A driver may convert the JDBC sql grammar into its system's
+	 * native SQL grammar prior to sending it; nativeSQL returns the
+	 * native form of the statement that the driver would have sent.
+	 *
+	 * @param sql a SQL statement that may contain one or more '?'
+	 *	parameter placeholders
+	 * @return the native form of this statement
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String nativeSQL(String sql) throws SQLException
+	{
+		return sql;
+	}
+
+	/**
+	 * If a connection is in auto-commit mode, than all its SQL
+	 * statements will be executed and committed as individual
+	 * transactions.  Otherwise, its SQL statements are grouped
+	 * into transactions that are terminated by either commit()
+	 * or rollback().  By default, new connections are in auto-
+	 * commit mode.  The commit occurs when the statement completes
+	 * or the next execute occurs, whichever comes first.  In the
+	 * case of statements returning a ResultSet, the statement
+	 * completes when the last row of the ResultSet has been retrieved
+	 * or the ResultSet has been closed.  In advanced cases, a single
+	 * statement may return multiple results as well as output parameter
+	 * values.  Here the commit occurs when all results and output param
+	 * values have been retrieved.
+	 *
+	 * @param autoCommit - true enables auto-commit; false disables it
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setAutoCommit(boolean autoCommit) throws SQLException
+	{
+		if (this.autoCommit == autoCommit)
+			return;
+		if (autoCommit)
+			ExecSQL("end");
+		else
+			ExecSQL("begin");
+		this.autoCommit = autoCommit;
+	}
+
+	/**
+	 * gets the current auto-commit state
+	 * 
+	 * @return Current state of the auto-commit mode
+	 * @exception SQLException (why?)
+	 * @see setAutoCommit
+	 */
+	public boolean getAutoCommit() throws SQLException
+	{
+		return this.autoCommit;
+	}
+
+	/**
+	 * The method commit() makes all changes made since the previous
+	 * commit/rollback permanent and releases any database locks currently
+	 * held by the Connection.  This method should only be used when
+	 * auto-commit has been disabled.  (If autoCommit == true, then we
+	 * just return anyhow)
+	 *
+	 * @exception SQLException if a database access error occurs
+	 * @see setAutoCommit
+	 */
+	public void commit() throws SQLException
+	{
+		if (autoCommit)
+			return;
+		ExecSQL("commit");
+		autoCommit = true;
+		ExecSQL("begin");
+		autoCommit = false;
+	}
+
+	/**
+	 * The method rollback() drops all changes made since the previous
+	 * commit/rollback and releases any database locks currently held by
+	 * the Connection. 
+	 *
+	 * @exception SQLException if a database access error occurs
+	 * @see commit
+	 */
+	public void rollback() throws SQLException
+	{
+		if (autoCommit)
+			return;
+		ExecSQL("rollback");
+		autoCommit = true;
+		ExecSQL("begin");
+		autoCommit = false;
+	}
+
+	/**
+	 * In some cases, it is desirable to immediately release a Connection's
+	 * database and JDBC resources instead of waiting for them to be
+	 * automatically released (cant think why off the top of my head)
+	 *
+	 * <B>Note:</B> A Connection is automatically closed when it is
+	 * garbage collected.  Certain fatal errors also result in a closed
+	 * connection.
+	 *
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void close() throws SQLException
+	{
+		if (pg_stream != null)
+		{
+			try
+			{
+				pg_stream.close();
+			} catch (IOException e) {}
+			pg_stream = null;
+		}
+	}
+
+	/**
+	 * Tests to see if a Connection is closed
+	 *
+	 * @return the status of the connection
+	 * @exception SQLException (why?)
+	 */
+	public boolean isClosed() throws SQLException
+	{
+		return (pg_stream == null);
+	}
+
+	/**
+	 * A connection's database is able to provide information describing
+	 * its tables, its supported SQL grammar, its stored procedures, the
+	 * capabilities of this connection, etc.  This information is made
+	 * available through a DatabaseMetaData object.
+	 *
+	 * @return a DatabaseMetaData object for this connection
+	 * @exception SQLException if a database access error occurs
+	 */
+	public java.sql.DatabaseMetaData getMetaData() throws SQLException
+	{
+//		return new DatabaseMetaData(this);
+		throw new SQLException("DatabaseMetaData not supported");
+	}
+
+	/**
+	 * You can put a connection in read-only mode as a hunt to enable
+	 * database optimizations
+	 *
+	 * <B>Note:</B> setReadOnly cannot be called while in the middle
+	 * of a transaction
+	 *
+	 * @param readOnly - true enables read-only mode; false disables it
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setReadOnly (boolean readOnly) throws SQLException
+	{
+		this.readOnly = readOnly;
+	}
+
+	/**
+	 * Tests to see if the connection is in Read Only Mode.  Note that
+	 * we cannot really put the database in read only mode, but we pretend
+	 * we can by returning the value of the readOnly flag
+	 *
+	 * @return true if the connection is read only
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isReadOnly() throws SQLException
+	{
+		return readOnly;
+	}
+
+	/**
+	 * A sub-space of this Connection's database may be selected by
+	 * setting a catalog name.  If the driver does not support catalogs,
+	 * it will silently ignore this request
+	 *
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setCatalog(String catalog) throws SQLException
+	{
+		// No-op
+	}
+
+	/**
+	 * Return the connections current catalog name, or null if no
+	 * catalog name is set, or we dont support catalogs.
+	 *
+	 * @return the current catalog name or null
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getCatalog() throws SQLException
+	{
+		return null;
+	}
+
+	/**
+	 * You can call this method to try to change the transaction
+	 * isolation level using one of the TRANSACTION_* values.  
+	 *
+	 * <B>Note:</B> setTransactionIsolation cannot be called while
+	 * in the middle of a transaction
+	 *
+	 * @param level one of the TRANSACTION_* isolation values with
+	 *	the exception of TRANSACTION_NONE; some databases may
+	 *	not support other values
+	 * @exception SQLException if a database access error occurs
+	 * @see java.sql.DatabaseMetaData#supportsTransactionIsolationLevel
+	 */
+	public void setTransactionIsolation(int level) throws SQLException
+	{
+		throw new SQLException("Transaction Isolation Levels are not implemented");
+	}
+	
+	/**
+	 * Get this Connection's current transaction isolation mode.
+	 * 
+	 * @return the current TRANSACTION_* mode value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getTransactionIsolation() throws SQLException
+	{
+		return java.sql.Connection.TRANSACTION_SERIALIZABLE;
+	}
+
+	/**
+	 * The first warning reported by calls on this Connection is
+	 * returned.
+	 *
+	 * <B>Note:</B> Sebsequent warnings will be changed to this
+	 * SQLWarning
+	 *
+	 * @return the first SQLWarning or null
+	 * @exception SQLException if a database access error occurs
+	 */
+	public SQLWarning getWarnings() throws SQLException
+	{
+		return null;	// We handle warnings as errors
+	}
+
+	/**
+	 * After this call, getWarnings returns null until a new warning
+	 * is reported for this connection.
+	 *
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void clearWarnings() throws SQLException
+	{
+		// Not handles since we handle wanrings as errors
+	}
+
+	// **********************************************************
+	//		END OF PUBLIC INTERFACE
+	// **********************************************************
+	
+	/**
+	 * Send a query to the backend.  Returns one of the ResultSet
+	 * objects.
+	 *
+	 * <B>Note:</B> there does not seem to be any method currently
+	 * in existance to return the update count.
+	 *
+	 * @param sql the SQL statement to be executed
+	 * @return a ResultSet holding the results
+	 * @exception SQLException if a database error occurs
+	 */
+	public synchronized ResultSet ExecSQL(String sql) throws SQLException
+	{
+		Field[] fields = null;
+		Vector tuples = new Vector();
+		byte[] buf = new byte[sql.length()];
+		int fqp = 0;
+		boolean hfr = false;
+		String recv_status = null, msg;
+		SQLException final_error = null;
+
+		if (sql.length() > 8192)
+			throw new SQLException("SQL Statement too long: " + sql);
+		try
+		{
+			pg_stream.SendChar('Q');
+			buf = sql.getBytes();
+			pg_stream.Send(buf);
+			pg_stream.SendChar(0);
+		} catch (IOException e) {
+			throw new SQLException("I/O Error: " + e.toString());
+		}
+
+		while (!hfr || fqp > 0)
+		{
+			int c = pg_stream.ReceiveChar();
+		
+			switch (c)
+			{
+				case 'A':	// Asynchronous Notify
+					int pid = pg_stream.ReceiveInteger(4);
+					msg = pg_stream.ReceiveString(8192);
+					break;
+				case 'B':	// Binary Data Transfer
+					if (fields == null)
+						throw new SQLException("Tuple received before MetaData");
+					tuples.addElement(pg_stream.ReceiveTuple(fields.length, true));
+					break;
+				case 'C':	// Command Status
+					recv_status = pg_stream.ReceiveString(8192);
+					if (fields != null)
+						hfr = true;
+					else
+					{
+						try
+						{
+							pg_stream.SendChar('Q');
+							pg_stream.SendChar(' ');
+							pg_stream.SendChar(0);
+						} catch (IOException e) {
+							throw new SQLException("I/O Error: " + e.toString());
+						}
+						fqp++;
+					}
+					break;
+				case 'D':	// Text Data Transfer
+					if (fields == null)
+						throw new SQLException("Tuple received before MetaData");
+					tuples.addElement(pg_stream.ReceiveTuple(fields.length, false));
+					break;
+				case 'E':	// Error Message
+					msg = pg_stream.ReceiveString(4096);
+					final_error = new SQLException(msg);
+					hfr = true;
+					break;
+				case 'I':	// Empty Query
+					int t = pg_stream.ReceiveChar();
+
+					if (t != 0)
+						throw new SQLException("Garbled Data");
+					if (fqp > 0)
+						fqp--;
+					if (fqp == 0)
+						hfr = true;
+					break;
+				case 'N':	// Error Notification
+					msg = pg_stream.ReceiveString(4096);
+					PrintStream log = DriverManager.getLogStream();
+					log.println(msg);
+					break;
+				case 'P':	// Portal Name
+					String pname = pg_stream.ReceiveString(8192);
+					break;
+				case 'T':	// MetaData Field Description
+					if (fields != null)
+						throw new SQLException("Cannot handle multiple result groups");
+					fields = ReceiveFields();
+					break;
+				default:
+					throw new SQLException("Unknown Response Type: " + (char)c);
+			}
+		}
+		if (final_error != null)
+			throw final_error;
+		return new ResultSet(this, fields, tuples, recv_status, 1);
+	}
+
+	/**
+	 * Receive the field descriptions from the back end
+	 *
+	 * @return an array of the Field object describing the fields
+	 * @exception SQLException if a database error occurs
+	 */
+	private Field[] ReceiveFields() throws SQLException
+	{
+		int nf = pg_stream.ReceiveInteger(2), i;
+		Field[] fields = new Field[nf];
+		
+		for (i = 0 ; i < nf ; ++i)
+		{
+			String typname = pg_stream.ReceiveString(8192);
+			int typid = pg_stream.ReceiveInteger(4);
+			int typlen = pg_stream.ReceiveInteger(2);
+			fields[i] = new Field(this, typname, typid, typlen);
+		}
+		return fields;
+	}
+
+	/**
+	 * In SQL, a result table can be retrieved through a cursor that
+	 * is named.  The current row of a result can be updated or deleted
+	 * using a positioned update/delete statement that references the
+	 * cursor name.
+	 *
+	 * We support one cursor per connection.
+	 *
+	 * setCursorName sets the cursor name.
+	 *
+	 * @param cursor the cursor name
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setCursorName(String cursor) throws SQLException
+	{
+		this.cursor = cursor;
+	}
+	
+	/**
+	 * getCursorName gets the cursor name.
+	 *
+	 * @return the current cursor name
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getCursorName() throws SQLException
+	{
+		return cursor;
+	}
+
+	/**
+	 * We are required to bring back certain information by
+	 * the DatabaseMetaData class.  These functions do that.
+	 *
+	 * Method getURL() brings back the URL (good job we saved it)
+	 *
+	 * @return the url
+	 * @exception SQLException just in case...
+	 */
+	public String getURL() throws SQLException
+	{
+		return this_url;
+	}
+
+	/**
+	 * Method getUserName() brings back the User Name (again, we
+	 * saved it)
+	 *
+	 * @return the user name
+	 * @exception SQLException just in case...
+	 */
+	public String getUserName() throws SQLException
+	{
+		return PG_USER;
+	}
+}
+
+// ***********************************************************************
+
+//  This class handles all the Streamed I/O for a postgresql connection
+class PG_Stream
+{
+	private Socket connection;
+	private InputStream pg_input;
+	private OutputStream pg_output;
+
+	/**
+	 * Constructor:  Connect to the PostgreSQL back end and return
+	 * a stream connection.
+	 *
+	 * @param host the hostname to connect to
+	 * @param port the port number that the postmaster is sitting on
+	 * @exception IOException if an IOException occurs below it.
+	 */
+	public PG_Stream(String host, int port) throws IOException
+	{
+		connection = new Socket(host, port);
+		pg_input = connection.getInputStream();
+		pg_output = connection.getOutputStream();	
+	}
+
+	/**
+	 * Sends a single character to the back end
+	 *
+	 * @param val the character to be sent
+	 * @exception IOException if an I/O error occurs
+	 */
+	public void SendChar(int val) throws IOException
+	{
+		pg_output.write(val);
+	}
+
+	/**
+	 * Sends an integer to the back end
+	 *
+	 * @param val the integer to be sent
+	 * @param siz the length of the integer in bytes (size of structure)
+	 * @exception IOException if an I/O error occurs
+	 */
+	public void SendInteger(int val, int siz) throws IOException
+	{
+		byte[] buf = new byte[siz];
+
+		while (siz-- > 0)
+		{
+			buf[siz] = (byte)(val & 0xff);
+			val >>= 8;
+		}
+		Send(buf);
+	}
+
+	/**
+	 * Send an array of bytes to the backend
+	 *
+	 * @param buf The array of bytes to be sent
+	 * @exception IOException if an I/O error occurs
+	 */
+	public void Send(byte buf[]) throws IOException
+	{
+		pg_output.write(buf);
+	}
+
+	/**
+	 * Send an exact array of bytes to the backend - if the length
+	 * has not been reached, send nulls until it has.
+	 *
+	 * @param buf the array of bytes to be sent
+	 * @param siz the number of bytes to be sent
+	 * @exception IOException if an I/O error occurs
+	 */
+	public void Send(byte buf[], int siz) throws IOException
+	{
+		int i;
+
+		pg_output.write(buf, 0, (buf.length < siz ? buf.length : siz));
+		if (buf.length < siz)
+		{
+			for (i = buf.length ; i < siz ; ++i)
+			{
+				pg_output.write(0);
+			}
+		}
+	}
+
+	/**
+	 * Receives a single character from the backend
+	 *
+	 * @return the character received
+	 * @exception SQLException if an I/O Error returns
+	 */
+	public int ReceiveChar() throws SQLException
+	{
+		int c = 0;
+	
+		try
+		{
+			c = pg_input.read();
+			if (c < 0) throw new IOException("EOF");
+		} catch (IOException e) {
+			throw new SQLException("Error reading from backend: " + e.toString());
+		}
+		return c;
+	}
+
+	/**
+	 * Receives an integer from the backend
+	 *
+	 * @param siz length of the integer in bytes
+	 * @return the integer received from the backend
+	 * @exception SQLException if an I/O error occurs
+	 */
+	public int ReceiveInteger(int siz) throws SQLException
+	{
+		int n = 0;
+		
+		try
+		{
+			for (int i = 0 ; i < siz ; i++)
+			{
+				int b = pg_input.read();
+			
+				if (b < 0)
+					throw new IOException("EOF");
+				n = n | (b >> (8 * i)) ;
+			}
+		} catch (IOException e) {
+			throw new SQLException("Error reading from backend: " + e.toString());
+		}
+		return n;
+	}
+
+	/**
+	 * Receives a null-terminated string from the backend.  Maximum of
+	 * maxsiz bytes - if we don't see a null, then we assume something
+	 * has gone wrong.
+	 *
+	 * @param maxsiz maximum length of string
+	 * @return string from back end
+	 * @exception SQLException if an I/O error occurs
+	 */
+	public String ReceiveString(int maxsiz) throws SQLException
+	{
+		byte[] rst = new byte[maxsiz];
+		int s = 0;
+
+		try
+		{
+			while (s < maxsiz)
+			{
+				int c = pg_input.read();
+				if (c < 0)
+					throw new IOException("EOF");
+				else if (c == 0)
+					break;
+				else
+					rst[s++] = (byte)c;
+			}
+			if (s >= maxsiz)
+				throw new IOException("Too Much Data");
+		} catch (IOException e) {
+			throw new SQLException("Error reading from backend: " + e.toString());
+		}
+		String v = new String(rst, 0, s);
+		return v;
+	}
+
+	/**
+	 * Read a tuple from the back end.  A tuple is a two dimensional
+	 * array of bytes
+	 *
+	 * @param nf the number of fields expected
+	 * @param bin true if the tuple is a binary tuple
+	 * @return null if the current response has no more tuples, otherwise
+	 *	an array of strings
+	 * @exception SQLException if a data I/O error occurs
+	 */
+	public byte[][] ReceiveTuple(int nf, boolean bin) throws SQLException
+	{
+		int i, bim = (nf + 7)/8;
+		byte[] bitmask = Receive(bim);
+		byte[][] answer = new byte[nf][0];
+
+		int whichbit = 0x80;
+		int whichbyte = 0;
+		
+		for (i = 0 ; i < nf ; ++i)
+		{
+			boolean isNull = ((bitmask[whichbyte] & whichbit) == 0);
+			whichbit >>= 1;
+			if (whichbit == 0)
+			{
+				++whichbyte;
+				whichbit = 0x80;
+			}
+			if (isNull) 
+				answer[i] = null;
+			else
+			{
+				int len = ReceiveInteger(4);
+				if (!bin) 
+					len -= 4;
+				if (len < 0) 
+					len = 0;
+				answer[i] = Receive(len);
+			}
+		}
+		return answer;
+	}
+
+	/**
+	 * Reads in a given number of bytes from the backend
+	 *
+	 * @param siz number of bytes to read
+	 * @return array of bytes received
+	 * @exception SQLException if a data I/O error occurs
+	 */
+	private byte[] Receive(int siz) throws SQLException
+	{
+		byte[] answer = new byte[siz];
+		int s = 0;
+
+		try 
+		{
+			while (s < siz)
+			{
+				int w = pg_input.read(answer, s, siz - s);
+				if (w < 0)
+					throw new IOException("EOF");
+				s += w;
+			}
+		} catch (IOException e) {
+			throw new SQLException("Error reading from backend: " + e.toString());
+		}
+		return answer;
+	}
+	
+	/**
+	 * Closes the connection
+	 *
+	 * @exception IOException if a IO Error occurs
+	 */
+	public void close() throws IOException
+	{
+		pg_output.close();
+		pg_input.close();
+		connection.close();
+	}
+}

src/interfaces/jdbc/postgresql/DatabaseMetaData.java

+package postgresql;
+
+import java.sql.*;
+
+/**
+ * @version 1.0 15-APR-1997
+ * @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
+ *
+ * This class provides information about the database as a whole.
+ *
+ * Many of the methods here return lists of information in ResultSets.  You
+ * can use the normal ResultSet methods such as getString and getInt to 
+ * retrieve the data from these ResultSets.  If a given form of metadata is
+ * not available, these methods should throw a SQLException.
+ *
+ * Some of these methods take arguments that are String patterns.  These
+ * arguments all have names such as fooPattern.  Within a pattern String,
+ * "%" means match any substring of 0 or more characters, and "_" means
+ * match any one character.  Only metadata entries matching the search
+ * pattern are returned.  if a search pattern argument is set to a null
+ * ref, it means that argument's criteria should be dropped from the
+ * search.
+ *
+ * A SQLException will be throws if a driver does not support a meta
+ * data method.  In the case of methods that return a ResultSet, either
+ * a ResultSet (which may be empty) is returned or a SQLException is
+ * thrown.
+ *
+ * @see java.sql.DatabaseMetaData
+ */
+public class DatabaseMetaData implements java.sql.DatabaseMetaData 
+{
+	Connection connection;		// The connection association
+
+	public DatabaseMetaData(Connection conn)
+	{
+		this.connection = conn;
+	}
+
+	/**
+	 * Can all the procedures returned by getProcedures be called
+	 * by the current user?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean allProceduresAreCallable() throws SQLException
+	{
+		return true;		// For now...
+	}
+
+	/**
+	 * Can all the tables returned by getTable be SELECTed by
+	 * the current user?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean allTablesAreSelectable() throws SQLException
+	{
+		return true;		// For now...
+	}
+
+	/**
+	 * What is the URL for this database?
+	 *
+	 * @return the url or null if it cannott be generated
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getURL() throws SQLException
+	{
+		return connection.getURL();
+	}
+
+	/**
+	 * What is our user name as known to the database?
+	 *
+	 * @return our database user name
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getUserName() throws SQLException
+	{
+		return connection.getUserName();
+	}
+
+	/**
+	 * Is the database in read-only mode?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isReadOnly() throws SQLException
+	{
+		return connection.isReadOnly();
+	}
+
+	/**
+	 * Are NULL values sorted high?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean nullsAreSortedHigh() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Are NULL values sorted low?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean nullsAreSortedLow() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Are NULL values sorted at the start regardless of sort order?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean nullsAreSortedAtStart() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Are NULL values sorted at the end regardless of sort order?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean nullsAreSortedAtEnd() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * What is the name of this database product - we hope that it is
+	 * PostgreSQL, so we return that explicitly.
+	 *
+	 * @return the database product name
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getDatabaseProductName() throws SQLException
+	{
+		return new String("PostgreSQL");
+	}
+
+	/**
+	 * What is the version of this database product.  Note that
+	 * PostgreSQL 6.1 has a system catalog called pg_version - 
+	 * however, select * from pg_version on any database retrieves
+	 * no rows.  For now, we will return the version 6.1 (in the
+	 * hopes that we change this driver as often as we change the
+	 * database)
+	 *
+	 * @return the database version
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getDatabaseProductVersion() throws SQLException
+	{
+		return ("6.1");
+	}
+
+	/**
+	 * What is the name of this JDBC driver?  If we don't know this
+	 * we are doing something wrong!
+	 *
+	 * @return the JDBC driver name
+	 * @exception SQLException why?
+	 */
+	public String getDriverName() throws SQLException
+	{
+		return new String("PostgreSQL Native Driver");
+	}
+
+	/**
+	 * What is the version string of this JDBC driver?  Again, this is
+	 * static.
+	 *
+	 * @return the JDBC driver name.
+	 * @exception SQLException why?
+	 */
+	public String getDriverVersion() throws SQLException
+	{
+		return new String("1.0");
+	}
+
+	/**
+	 * What is this JDBC driver's major version number?
+	 *
+	 * @return the JDBC driver major version
+	 */
+	public int getDriverMajorVersion()
+	{
+		return 1;
+	}
+
+	/**
+	 * What is this JDBC driver's minor version number?
+	 *
+	 * @return the JDBC driver minor version
+	 */
+	public int getDriverMinorVersion()
+	{
+		return 0;
+	}
+
+	/**
+	 * Does the database store tables in a local file?  No - it
+	 * stores them in a file on the server.
+	 * 
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean usesLocalFiles() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does the database use a file for each table?  Well, not really,
+	 * since it doesnt use local files. 
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean usesLocalFilePerTable() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does the database treat mixed case unquoted SQL identifiers
+	 * as case sensitive and as a result store them in mixed case?
+	 * A JDBC-Compliant driver will always return false.
+	 *
+	 * Predicament - what do they mean by "SQL identifiers" - if it
+	 * means the names of the tables and columns, then the answers
+	 * given below are correct - otherwise I don't know.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsMixedCaseIdentifiers() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Does the database treat mixed case unquoted SQL identifiers as
+	 * case insensitive and store them in upper case?
+	 *
+	 * @return true if so
+	 */
+	public boolean storesUpperCaseIdentifiers() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does the database treat mixed case unquoted SQL identifiers as
+	 * case insensitive and store them in lower case?
+	 *
+	 * @return true if so
+	 */
+	public boolean storesLowerCaseIdentifiers() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does the database treat mixed case unquoted SQL identifiers as
+	 * case insensitive and store them in mixed case?
+	 *
+	 * @return true if so
+	 */
+	public boolean storesMixedCaseIdentifiers() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does the database treat mixed case quoted SQL identifiers as
+	 * case sensitive and as a result store them in mixed case?  A
+	 * JDBC compliant driver will always return true. 
+	 *
+	 * Predicament - what do they mean by "SQL identifiers" - if it
+	 * means the names of the tables and columns, then the answers
+	 * given below are correct - otherwise I don't know.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Does the database treat mixed case quoted SQL identifiers as
+	 * case insensitive and store them in upper case?
+	 *
+	 * @return true if so
+	 */
+	public boolean storesUpperCaseQuotedIdentifiers() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does the database treat mixed case quoted SQL identifiers as case
+	 * insensitive and store them in lower case?
+	 *
+	 * @return true if so
+	 */
+	public boolean storesLowerCaseQuotedIdentifiers() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does the database treat mixed case quoted SQL identifiers as case
+	 * insensitive and store them in mixed case?
+	 *
+	 * @return true if so
+	 */
+	public boolean storesMixedCaseQuotedIdentifiers() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * What is the string used to quote SQL identifiers?  This returns
+	 * a space if identifier quoting isn't supported.  A JDBC Compliant
+	 * driver will always use a double quote character.
+	 *
+	 * If an SQL identifier is a table name, column name, etc. then
+	 * we do not support it.
+	 *
+	 * @return the quoting string
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getIdentifierQuoteString() throws SQLException
+	{
+		return new String(" ");
+	}
+
+	/**
+	 * Get a comma separated list of all a database's SQL keywords that
+	 * are NOT also SQL92 keywords.
+	 *
+	 * Within PostgreSQL, the keywords are found in
+	 * 	src/backend/parser/keywords.c
+	 * For SQL Keywords, I took the list provided at
+	 * 	http://web.dementia.org/~shadow/sql/sql3bnf.sep93.txt
+	 * which is for SQL3, not SQL-92, but it is close enough for
+	 * this purpose.
+	 *
+	 * @return a comma separated list of keywords we use
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getSQLKeywords() throws SQLException
+	{
+		return new String("abort,acl,add,aggregate,append,archive,arch_store,backward,binary,change,cluster,copy,database,delimiters,do,extend,explain,forward,heavy,index,inherits,isnull,light,listen,load,merge,nothing,notify,notnull,oids,purge,rename,replace,retrieve,returns,rule,recipe,setof,stdin,stdout,store,vacuum,verbose,version");
+	}
+
+	public String getNumericFunctions() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public String getStringFunctions() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public String getSystemFunctions() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public String getTimeDateFunctions() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	/**
+	 * This is the string that can be used to escape '_' and '%' in
+	 * a search string pattern style catalog search parameters
+	 *
+	 * @return the string used to escape wildcard characters
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getSearchStringEscape() throws SQLException
+	{
+		return new String("\\");
+	}
+
+	/**
+	 * Get all the "extra" characters that can bew used in unquoted
+	 * identifier names (those beyond a-zA-Z0-9 and _)
+	 *
+	 * From the file src/backend/parser/scan.l, an identifier is
+	 * {letter}{letter_or_digit} which makes it just those listed
+	 * above.
+	 *
+	 * @return a string containing the extra characters
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getExtraNameCharacters() throws SQLException
+	{
+		return new String("");
+	}
+
+	/**
+	 * Is "ALTER TABLE" with an add column supported?
+	 * Yes for PostgreSQL 6.1
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsAlterTableWithAddColumn() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Is "ALTER TABLE" with a drop column supported?
+	 * Yes for PostgreSQL 6.1
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsAlterTableWithDropColumn() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Is column aliasing supported?
+	 *
+	 * If so, the SQL AS clause can be used to provide names for
+	 * computed columns or to provide alias names for columns as
+	 * required.  A JDBC Compliant driver always returns true.
+	 *
+	 * e.g.
+	 *
+	 * select count(C) as C_COUNT from T group by C;
+	 *
+	 * should return a column named as C_COUNT instead of count(C)
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsColumnAliasing() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Are concatenations between NULL and non-NULL values NULL?  A
+	 * JDBC Compliant driver always returns true
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean nullPlusNonNullIsNull() throws SQLException
+	{
+		return true;
+	}
+
+	public boolean supportsConvert() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean supportsConvert(int fromType, int toType) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean supportsTableCorrelationNames() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean supportsDifferentTableCorrelationNames() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	/**
+	 * Are expressions in "ORCER BY" lists supported?
+	 * 
+	 * e.g. select * from t order by a + b;
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsExpressionsInOrderBy() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can an "ORDER BY" clause use columns not in the SELECT?
+	 * I checked it, and you can't.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsOrderByUnrelated() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Is some form of "GROUP BY" clause supported?
+	 * I checked it, and yes it is.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsGroupBy() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Can a "GROUP BY" clause use columns not in the SELECT?
+	 * I checked it - it seems to allow it
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsGroupByUnrelated() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Can a "GROUP BY" clause add columns not in the SELECT provided
+	 * it specifies all the columns in the SELECT?  Does anyone actually
+	 * understand what they mean here?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsGroupByBeyondSelect() throws SQLException
+	{
+		return true;		// For now...
+	}
+
+	/**
+	 * Is the escape character in "LIKE" clauses supported?  A
+	 * JDBC compliant driver always returns true.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsLikeEscapeClause() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Are multiple ResultSets from a single execute supported?
+	 * Well, I implemented it, but I dont think this is possible from
+	 * the back ends point of view.
+	 * 
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsMultipleResultSets() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can we have multiple transactions open at once (on different
+	 * connections?)
+	 * I guess we can have, since Im relying on it.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsMultipleTransactions() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Can columns be defined as non-nullable.  A JDBC Compliant driver
+	 * always returns true.  We dont support NOT NULL, so we are not
+	 * JDBC compliant.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsNonNullableColumns() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does this driver support the minimum ODBC SQL grammar.  This
+	 * grammar is defined at:
+	 *
+	 * http://www.microsoft.com/msdn/sdk/platforms/doc/odbc/src/intropr.htm
+	 *
+	 * In Appendix C.  From this description, we seem to support the
+	 * ODBC minimal (Level 0) grammar.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsMinimumSQLGrammar() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Does this driver support the Core ODBC SQL grammar.  We need
+	 * SQL-92 conformance for this.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsCoreSQLGrammar() throws SQLException
+	{
+		return false;
+	}
+	
+	/**
+	 * Does this driver support the Extended (Level 2) ODBC SQL
+	 * grammar.  We don't conform to the Core (Level 1), so we can't
+	 * conform to the Extended SQL Grammar.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsExtendedSQLGrammar() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does this driver support the ANSI-92 entry level SQL grammar?
+	 * All JDBC Compliant drivers must return true.  I think we have
+	 * to support outer joins for this to be true.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsANSI92EntryLevelSQL() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does this driver support the ANSI-92 intermediate level SQL
+	 * grammar?  Anyone who does not support Entry level cannot support
+	 * Intermediate level.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsANSI92IntermediateSQL() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does this driver support the ANSI-92 full SQL grammar?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsANSI92FullSQL() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Is the SQL Integrity Enhancement Facility supported?
+	 * I haven't seen this mentioned anywhere, so I guess not
+	 * 
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsIntegrityEnhancementFacility() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Is some form of outer join supported?  From my knowledge, nope.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsOuterJoins() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Are full nexted outer joins supported?  Well, we dont support any
+	 * form of outer join, so this is no as well
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsFullOuterJoins() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Is there limited support for outer joins?  (This will be true if
+	 * supportFullOuterJoins is true)
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsLimitedOuterJoins() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * What is the database vendor's preferred term for "schema" - well,
+	 * we do not provide support for schemas, so lets just use that
+	 * term.
+	 *
+	 * @return the vendor term
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getSchemaTerm() throws SQLException
+	{
+		return new String("Schema");
+	}
+
+	/**
+	 * What is the database vendor's preferred term for "procedure" - 
+	 * I kind of like "Procedure" myself.
+	 *
+	 * @return the vendor term
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getProcedureTerm() throws SQLException
+	{
+		return new String("Procedure");
+	}
+
+	/**
+	 * What is the database vendor's preferred term for "catalog"? -
+	 * we dont have a preferred term, so just use Catalog
+	 *
+	 * @return the vendor term
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getCatalogTerm() throws SQLException
+	{
+		return new String("Catalog");
+	}
+
+	/**
+	 * Does a catalog appear at the start of a qualified table name?
+	 * (Otherwise it appears at the end).
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isCatalogAtStart() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * What is the Catalog separator.  Hmmm....well, I kind of like
+	 * a period (so we get catalog.table definitions). - I don't think
+	 * PostgreSQL supports catalogs anyhow, so it makes no difference.
+	 *
+	 * @return the catalog separator string
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getCatalogSeparator() throws SQLException
+	{
+		return new String(".");
+	}
+
+	/**
+	 * Can a schema name be used in a data manipulation statement?  Nope.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsSchemasInDataManipulation() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can a schema name be used in a procedure call statement?  Nope.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsSchemasInProcedureCalls() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can a schema be used in a table definition statement?  Nope.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsSchemasInTableDefinitions() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can a schema name be used in an index definition statement?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsSchemasInIndexDefinitions() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can a schema name be used in a privilege definition statement?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can a catalog name be used in a data manipulation statement?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsCatalogsInDataManipulation() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can a catalog name be used in a procedure call statement?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsCatalogsInProcedureCalls() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can a catalog name be used in a table definition statement?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsCatalogsInTableDefinitions() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can a catalog name be used in an index definition?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsCatalogsInIndexDefinitions() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can a catalog name be used in a privilege definition statement?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * We support cursors for gets only it seems.  I dont see a method
+	 * to get a positioned delete.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsPositionedDelete() throws SQLException
+	{
+		return false;			// For now...
+	}
+
+	/**
+	 * Is positioned UPDATE supported?
+	 * 
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsPositionedUpdate() throws SQLException
+	{
+		return false;			// For now...
+	}
+
+	public boolean supportsSelectForUpdate() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean supportsStoredProcedures() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean supportsSubqueriesInComparisons() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean supportsSubqueriesInExists() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean supportsSubqueriesInIns() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean supportsSubqueriesInQuantifieds() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public boolean supportsCorrelatedSubqueries() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	/**
+	 * Is SQL UNION supported?  Nope.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsUnion() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Is SQL UNION ALL supported?  Nope.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsUnionAll() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * In PostgreSQL, Cursors are only open within transactions.
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsOpenCursorsAcrossCommit() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Do we support open cursors across multiple transactions?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsOpenCursorsAcrossRollback() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Can statements remain open across commits?  They may, but
+	 * this driver cannot guarentee that.  In further reflection.
+	 * we are talking a Statement object jere, so the answer is
+	 * yes, since the Statement is only a vehicle to ExecSQL()
+	 *
+	 * @return true if they always remain open; false otherwise
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsOpenStatementsAcrossCommit() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Can statements remain open across rollbacks?  They may, but
+	 * this driver cannot guarentee that.  In further contemplation,
+	 * we are talking a Statement object here, so the answer is yes,
+	 * since the Statement is only a vehicle to ExecSQL() in Connection
+	 *
+	 * @return true if they always remain open; false otherwise
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsOpenStatementsAcrossRollback() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * How many hex characters can you have in an inline binary literal
+	 *
+	 * @return the max literal length
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxBinaryLiteralLength() throws SQLException
+	{
+		return 0;				// For now...
+	}
+
+	/**
+	 * What is the maximum length for a character literal
+	 * I suppose it is 8190 (8192 - 2 for the quotes)
+	 *
+	 * @return the max literal length
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxCharLiteralLength() throws SQLException
+	{
+		return 8190;
+	}
+
+	/**
+	 * Whats the limit on column name length.  The description of
+	 * pg_class would say '32' (length of pg_class.relname) - we
+	 * should probably do a query for this....but....
+	 *
+	 * @return the maximum column name length
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxColumnNameLength() throws SQLException
+	{
+		return 32;
+	}
+
+	/**
+	 * What is the maximum number of columns in a "GROUP BY" clause?
+	 *
+	 * @return the max number of columns
+	 * @exception SQLException if a database access error occurs	
+	 */
+	public int getMaxColumnsInGroupBy() throws SQLException
+	{
+		return getMaxColumnsInTable();
+	}
+
+	/**
+	 * What's the maximum number of columns allowed in an index?
+	 * 6.0 only allowed one column, but 6.1 introduced multi-column
+	 * indices, so, theoretically, its all of them.
+	 *
+	 * @return max number of columns
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxColumnsInIndex() throws SQLException
+	{
+		return getMaxColumnsInTable();
+	}
+
+	/**
+	 * What's the maximum number of columns in an "ORDER BY clause?
+	 * Theoretically, all of them!
+	 *
+	 * @return the max columns
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxColumnsInOrderBy() throws SQLException
+	{
+		return getMaxColumnsInTable();
+	}
+
+	/**
+	 * What is the maximum number of columns in a "SELECT" list?
+	 * Theoretically, all of them!
+	 *
+	 * @return the max columns
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxColumnsInSelect() throws SQLException
+	{
+		return getMaxColumnsInTable();
+	}
+
+	/**
+	 * What is the maximum number of columns in a table? From the
+	 * create_table(l) manual page...
+	 *
+	 * "The new class is created as a heap with no initial data.  A
+	 * class can have no more than 1600 attributes (realistically,
+	 * this is limited by the fact that tuple sizes must be less than
+	 * 8192 bytes)..."
+	 *
+	 * @return the max columns
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxColumnsInTable() throws SQLException
+	{
+		return 1600;
+	}
+
+	/**
+	 * How many active connection can we have at a time to this
+	 * database?  Well, since it depends on postmaster, which just
+	 * does a listen() followed by an accept() and fork(), its
+	 * basically very high.  Unless the system runs out of processes,
+	 * it can be 65535 (the number of aux. ports on a TCP/IP system).
+	 * I will return 8192 since that is what even the largest system
+	 * can realistically handle,
+	 *
+	 * @return the maximum number of connections
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxConnections() throws SQLException
+	{
+		return 8192;
+	}
+
+	/**
+	 * What is the maximum cursor name length (the same as all
+	 * the other F***** identifiers!)
+	 *
+	 * @return max cursor name length in bytes
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxCursorNameLength() throws SQLException
+	{
+		return 32;
+	}
+
+	/**
+	 * What is the maximum length of an index (in bytes)?  Now, does
+	 * the spec. mean name of an index (in which case its 32, the 
+	 * same as a table) or does it mean length of an index element
+	 * (in which case its 8192, the size of a row) or does it mean
+	 * the number of rows it can access (in which case it 2^32 - 
+	 * a 4 byte OID number)?  I think its the length of an index
+	 * element, personally, so Im setting it to 8192.
+	 *
+	 * @return max index length in bytes
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxIndexLength() throws SQLException
+	{
+		return 8192;
+	}
+
+	public int getMaxSchemaNameLength() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	/**
+	 * What is the maximum length of a procedure name?
+	 * (length of pg_proc.proname used) - again, I really
+	 * should do a query here to get it.
+	 *
+	 * @return the max name length in bytes
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxProcedureNameLength() throws SQLException
+	{
+		return 32;
+	}
+
+	public int getMaxCatalogNameLength() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	/**
+	 * What is the maximum length of a single row?  (not including
+	 * blobs).  8192 is defined in PostgreSQL.
+	 *
+	 * @return max row size in bytes
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxRowSize() throws SQLException
+	{
+		return 8192;
+	}
+
+	/**
+	 * Did getMaxRowSize() include LONGVARCHAR and LONGVARBINARY
+	 * blobs?  We don't handle blobs yet
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean doesMaxRowSizeIncludeBlobs() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * What is the maximum length of a SQL statement?
+	 *
+	 * @return max length in bytes
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxStatementLength() throws SQLException
+	{
+		return 8192;
+	}
+
+	/**
+	 * How many active statements can we have open at one time to
+	 * this database?  Basically, since each Statement downloads
+	 * the results as the query is executed, we can have many.  However,
+	 * we can only really have one statement per connection going
+	 * at once (since they are executed serially) - so we return
+	 * one.
+	 *
+	 * @return the maximum
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxStatements() throws SQLException
+	{
+		return 1;
+	}
+
+	/**
+	 * What is the maximum length of a table name?  This was found
+	 * from pg_class.relname length
+	 *
+	 * @return max name length in bytes
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxTableNameLength() throws SQLException
+	{
+		return 32;
+	}
+
+	/**
+	 * What is the maximum number of tables that can be specified
+	 * in a SELECT?  Theoretically, this is the same number as the
+	 * number of tables allowable.  In practice tho, it is much smaller
+	 * since the number of tables is limited by the statement, we
+	 * return 1024 here - this is just a number I came up with (being
+	 * the number of tables roughly of three characters each that you
+	 * can fit inside a 8192 character buffer with comma separators).
+	 *
+	 * @return the maximum
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxTablesInSelect() throws SQLException
+	{
+		return 1024;
+	}
+
+	/**
+	 * What is the maximum length of a user name?  Well, we generally
+	 * use UNIX like user names in PostgreSQL, so I think this would
+	 * be 8.  However, showing the schema for pg_user shows a length
+	 * for username of 32.
+	 *
+	 * @return the max name length in bytes
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxUserNameLength() throws SQLException
+	{
+		return 32;
+	}
+
+	
+	/**
+	 * What is the database's default transaction isolation level?  We
+	 * do not support this, so all transactions are SERIALIZABLE.
+	 *
+	 * @return the default isolation level
+	 * @exception SQLException if a database access error occurs
+	 * @see Connection
+	 */
+	public int getDefaultTransactionIsolation() throws SQLException
+	{
+		return Connection.TRANSACTION_SERIALIZABLE;
+	}
+
+	/**
+	 * Are transactions supported?  If not, commit and rollback are noops
+	 * and the isolation level is TRANSACTION_NONE.  We do support
+	 * transactions.	
+	 *
+	 * @return true if transactions are supported
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsTransactions() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Does the database support the given transaction isolation level?
+	 * We only support TRANSACTION_SERIALIZABLE
+	 * 
+	 * @param level the values are defined in java.sql.Connection
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 * @see Connection
+	 */
+	public boolean supportsTransactionIsolationLevel(int level) throws SQLException
+	{
+		if (level == Connection.TRANSACTION_SERIALIZABLE)
+			return true;
+		else
+			return false;
+	}
+
+	/**
+	 * Are both data definition and data manipulation transactions 
+	 * supported?  I checked it, and could not do a CREATE TABLE
+	 * within a transaction, so I am assuming that we don't
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Are only data manipulation statements withing a transaction
+	 * supported?
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean supportsDataManipulationTransactionsOnly() throws SQLException
+	{
+		return true;
+	}
+
+	/**
+	 * Does a data definition statement within a transaction force
+	 * the transaction to commit?  I think this means something like:
+	 *
+	 * CREATE TABLE T (A INT);
+	 * INSERT INTO T (A) VALUES (2);
+	 * BEGIN;
+	 * UPDATE T SET A = A + 1;
+	 * CREATE TABLE X (A INT);
+	 * SELECT A FROM T INTO X;
+	 * COMMIT;
+	 *
+	 * does the CREATE TABLE call cause a commit?  The answer is no.  
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean dataDefinitionCausesTransactionCommit() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 *  Is a data definition statement within a transaction ignored?
+	 * It seems to be (from experiment in previous method)
+	 *
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean dataDefinitionIgnoredInTransactions() throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Get a description of stored procedures available in a catalog
+	 * 
+	 * Only procedure descriptions matching the schema and procedure
+	 * name criteria are returned.  They are ordered by PROCEDURE_SCHEM
+	 * and PROCEDURE_NAME
+	 *
+	 * Each procedure description has the following columns:
+	 * PROCEDURE_CAT String => procedure catalog (may be null)
+	 * PROCEDURE_SCHEM String => procedure schema (may be null)
+	 * PROCEDURE_NAME String => procedure name
+	 * Field 4 reserved (make it null)
+	 * Field 5 reserved (make it null)
+	 * Field 6 reserved (make it null)
+	 * REMARKS String => explanatory comment on the procedure
+	 * PROCEDURE_TYPE short => kind of procedure
+	 *	* procedureResultUnknown - May return a result
+	 * 	* procedureNoResult - Does not return a result
+	 *	* procedureReturnsResult - Returns a result
+	 *
+	 * @param catalog - a catalog name; "" retrieves those without a
+	 *	catalog; null means drop catalog name from criteria
+	 * @param schemaParrern - a schema name pattern; "" retrieves those
+	 *	without a schema - we ignore this parameter
+	 * @param procedureNamePattern - a procedure name pattern
+	 * @return ResultSet - each row is a procedure description
+	 * @exception SQLException if a database access error occurs
+	 */
+	public java.sql.ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern) throws SQLException
+	{
+		Field[] f = new Field[8];		// the field descriptors for the new ResultSet
+		static final int iVarcharOid = 1043;	// This is the OID for a varchar()
+		static final int iInt2Oid = 21;		// This is the OID for an int2
+		ResultSet r;				// ResultSet for the SQL query that we need to do
+		Vector v;				// The new ResultSet tuple stuff
+		String remarks = new String("no remarks");
+
+		Field[0] = new Field(conn, new String("PROCEDURE_CAT"), iVarcharOid, 32);
+		Field[1] = new Field(conn, new String("PROCEDURE_SCHEM"), iVarcharOid, 32);
+		Field[2] = new Field(conn, new String("PROCEDURE_NAME"), iVarcharOid, 32);
+		Field[3] = null;
+		Field[4] = null;
+		Field[5] = null;
+		Field[6] = new Field(conn, new String("REMARKS"), iVarcharOid, 8192);
+		Field[7] = new Field(conn, new String("PROCEDURE_TYPE"), iInt2Oid, 2);
+		r = conn.ExecSQL("select proname, proretset from pg_proc order by proname");
+		if (r.getColumnCount() != 2 || r.getTupleCount() <= 1)
+			throw new SQLException("Unexpected return from query for procedure list");
+		while (r.next())
+		{
+			byte[][] tuple = new byte[8][0];
+
+			String name = r.getString(1);
+			String remarks = new String("no remarks");
+			boolean retset = r.getBoolean(2);
+	
+			byte[0] = null;			// Catalog name
+			byte[1] = null;			// Schema name
+			byte[2] = name.getBytes();	// Procedure name
+			byte[3] = null;			// Reserved
+			byte[4] = null;			// Reserved
+			byte[5] = null;			// Reserved
+			byte[6] = remarks.getBytes();	// Remarks
+			if (retset)
+				byte[7] = procedureReturnsResult;
+			else
+				byte[7] = procedureNoResult;
+			v.addElement(byte);
+		}			
+		return new ResultSet(conn, f, v, "OK", 1);
+	}
+
+	public java.sql.ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String types[]) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getSchemas() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getCatalogs() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getTableTypes() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getVersionColumns(String catalog, String schema, String table) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getCrossReference(String primaryCatalog, String primarySchema, String primaryTable, String foreignCatalog, String foreignSchema, String foreignTable) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getTypeInfo() throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+
+	public java.sql.ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate) throws SQLException
+	{
+		// XXX-Not Implemented
+	}
+}

src/interfaces/jdbc/postgresql/Driver.java

+package postgresql;
+
+import java.sql.*;
+import java.util.*;
+import postgresql.*;
+
+/**
+ * @version 1.0 15-APR-1997
+ * @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
+ *
+ * The Java SQL framework allows for multiple database drivers.  Each
+ * driver should supply a class that implements the Driver interface
+ *
+ * The DriverManager will try to load as many drivers as it can find and then
+ * for any given connection request, it will ask each driver in turn to try
+ * to connect to the target URL.
+ *
+ * It is strongly recommended that each Driver class should be small and
+ * standalone so that the Driver class can be loaded and queried without
+ * bringing in vast quantities of supporting code.
+ *
+ * When a Driver class is loaded, it should create an instance of itself and
+ * register it with the DriverManager.  This means that a user can load and
+ * register a driver by doing Class.forName("foo.bah.Driver")
+ *
+ * @see postgresql.Connection
+ * @see java.sql.Driver
+ */
+public class Driver implements java.sql.Driver 
+{
+
+	static 
+	{
+		try
+		{
+			new Driver();
+		} catch (SQLException e) {
+			e.printStackTrace();
+		}
+	}
+
+	/**
+	  * Construct a new driver and register it with DriverManager
+	  *
+	  * @exception SQLException for who knows what!
+	  */
+	public Driver() throws SQLException
+	{
+		java.sql.DriverManager.registerDriver(this);
+	}
+	
+	/**
+	 * Try to make a database connection to the given URL.  The driver
+	 * should return "null" if it realizes it is the wrong kind of
+	 * driver to connect to the given URL.  This will be common, as
+	 * when the JDBC driverManager is asked to connect to a given URL,
+	 * it passes the URL to each loaded driver in turn.
+	 *
+	 * The driver should raise an SQLException if it is the right driver
+	 * to connect to the given URL, but has trouble connecting to the
+	 * database.
+	 *
+	 * The java.util.Properties argument can be used to pass arbitrary
+	 * string tag/value pairs as connection arguments.  Normally, at least
+	 * "user" and "password" properties should be included in the 
+	 * properties.
+	 *
+	 * Our protocol takes the form:
+	 * <PRE>
+	 *	jdbc:postgresql://host:port/database
+	 * </PRE>
+	 *
+	 * @param url the URL of the database to connect to
+	 * @param info a list of arbitrary tag/value pairs as connection
+	 *	arguments
+	 * @return a connection to the URL or null if it isnt us
+	 * @exception SQLException if a database access error occurs
+	 * @see java.sql.Driver#connect
+	 */
+	public java.sql.Connection connect(String url, Properties info) throws SQLException
+	{
+		DriverURL dr = new DriverURL(url);
+		int port;
+
+		if (!(dr.protocol().equals("jdbc")))
+                        return null;
+		if (!(dr.subprotocol().equals("postgresql")))
+                        return null;
+		if (dr.host().equals("unknown"))
+                        return null;
+		port = dr.port();
+		if (port == -1)
+                        port = 5432;    // Default PostgreSQL port
+		return new Connection (dr.host(), port, info, dr.database(), url, this);
+	}
+
+	/**
+	 * Returns true if the driver thinks it can open a connection to the
+	 * given URL.  Typically, drivers will return true if they understand
+	 * the subprotocol specified in the URL and false if they don't.  Our
+	 * protocols start with jdbc:postgresql:
+	 *
+	 * @see java.sql.Driver#acceptsURL
+	 * @param url the URL of the driver
+	 * @return true if this driver accepts the given URL
+         * @exception SQLException if a database-access error occurs
+	 * 	(Dont know why it would *shrug*)
+	 */
+	public boolean acceptsURL(String url) throws SQLException
+	{
+		DriverURL dr = new DriverURL(url);
+
+		if (dr.protocol().equals("jdbc"))
+			if (dr.subprotocol().equals("postgresql"))
+				return true;
+		return false;
+	}
+
+	/**
+	 * The getPropertyInfo method is intended to allow a generic GUI
+	 * tool to discover what properties it should prompt a human for
+	 * in order to get enough information to connect to a database.
+	 * Note that depending on the values the human has supplied so
+	 * far, additional values may become necessary, so it may be necessary
+	 * to iterate through several calls to getPropertyInfo
+	 *
+	 * @param url the Url of the database to connect to
+	 * @param info a proposed list of tag/value pairs that will be sent on
+	 * 	connect open.
+	 * @return An array of DriverPropertyInfo objects describing
+	 * 	possible properties.  This array may be an empty array if
+	 *	no properties are required
+	 * @exception SQLException if a database-access error occurs
+	 * @see java.sql.Driver#getPropertyInfo
+	 */
+	public DriverPropertyInfo[] getPropertyInfo(String url, Properties info) throws SQLException
+	{
+		return null;		// We don't need anything except
+					// the username, which is a default
+	}
+
+	/**
+	 * Gets the drivers major version number
+	 *
+	 * @return the drivers major version number
+	 */
+	public int getMajorVersion()
+	{
+		return 1;
+	}
+	
+	/**
+	 * Get the drivers minor version number
+	 *
+	 * @return the drivers minor version number
+	 */
+	public int getMinorVersion()
+	{
+		return 0;
+	}
+	
+	/**
+	 * Report whether the driver is a genuine JDBC compliant driver.  A
+	 * driver may only report "true" here if it passes the JDBC compliance
+	 * tests, otherwise it is required to return false.  JDBC compliance
+	 * requires full support for the JDBC API and full support for SQL 92
+	 * Entry Level.  
+	 */
+	public boolean jdbcCompliant()
+	{
+		return false;
+	}
+}
+
+/**
+ * The DriverURL class splits a JDBC URL into its subcomponents
+ *
+ *	protocol:subprotocol:/[/host[:port]/][database]
+ */
+class DriverURL
+{
+	private String protocol, subprotocol, host, database;
+	private int port = -1;
+
+	/**
+	 * Constructs a new DriverURL, splitting the specified URL into its
+	 * component parts
+	 */
+	public DriverURL(String url) throws SQLException
+	{
+		int a, b, c;
+		String tmp, hostport, dbportion;
+
+		a = url.indexOf(':');
+		if (a == -1)
+			throw new SQLException("Bad URL Protocol specifier");
+		b = url.indexOf(':', a+1);
+		if (b == -1)
+			throw new SQLException("Bad URL Subprotocol specifier");
+                protocol = new String(url.substring(0, a));
+		subprotocol = new String(url.substring(a+1, b));
+                tmp = new String(url.substring(b+1, url.length()));
+		if (tmp.length() < 2)
+			throw new SQLException("Bad URL Database specifier");
+                if (!tmp.substring(0, 2).equals("//"))
+		{
+			host = new String("unknown");
+			port = -1;
+			database = new String(tmp.substring(1, tmp.length()));
+			return;
+		}
+		dbportion = new String(tmp.substring(2, tmp.length()));
+		c = dbportion.indexOf('/');
+		if (c == -1)
+			throw new SQLException("Bad URL Database specifier");
+		a = dbportion.indexOf(':');
+		if (a == -1)
+		{
+			host = new String(dbportion.substring(0, c));
+			port = -1;
+			database = new String(dbportion.substring(c+1, dbportion.length()));
+		} else {
+			host = new String(dbportion.substring(0, a));
+			port = Integer.valueOf(dbportion.substring(a+1, c)).intValue();
+			database = new String(dbportion.substring(c+1, dbportion.length()));
+		}
+	}
+
+	/**
+	 * Returns the protocol name of the DriverURL
+	 */
+	public String protocol()
+	{
+		return protocol;
+	}
+
+	/**
+	 * Returns the subprotocol name of the DriverURL
+	 */
+	public String subprotocol()
+	{
+		return subprotocol;
+	}
+
+	/**
+	 * Returns the hostname portion of the URL
+	 */
+	public String host()
+	{
+		return host;
+	}
+
+	/**
+	 * Returns the port number portion of the URL
+	 * or -1 if no port was specified
+	 */
+	public int port()
+	{
+		return port;
+	}
+
+	/**
+	 * Returns the database name of the URL
+	 */
+	public String database()
+	{
+		return database;
+	}
+}

src/interfaces/jdbc/postgresql/Field.java

+package postgresql;
+
+import java.lang.*;
+import java.sql.*;
+import java.util.*;
+import postgresql.*;
+
+/**
+ * postgresql.Field is a class used to describe fields in a PostgreSQL ResultSet
+ *
+ * @version 1.0 15-APR-1997
+ * @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
+ */
+public class Field
+{
+	int length;		// Internal Length of this field
+	int oid;		// OID of the type
+	Connection conn;	// Connection Instantation
+	String name;		// Name of this field
+
+	int sql_type = -1;	// The entry in java.sql.Types for this field
+	String type_name = null;// The sql type name
+
+	/**
+	 *	Construct a field based on the information fed to it.
+	 *
+	 * @param conn the connection this field came from
+	 * @param name the name of the field
+	 * @param oid the OID of the field
+	 * @param len the length of the field
+	 */
+	public Field(Connection conn, String name, int oid, int length)
+	{
+		this.conn = conn;
+		this.name = name;
+		this.oid = oid;
+		this.length = length;
+	}
+
+	/**
+	 * the ResultSet and ResultMetaData both need to handle the SQL
+	 * type, which is gained from another query.  Note that we cannot
+	 * use getObject() in this, since getObject uses getSQLType().
+	 *
+	 * @return the entry in Types that refers to this field
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getSQLType() throws SQLException
+	{
+		if (sql_type == -1)
+		{
+			ResultSet result = (postgresql.ResultSet)conn.ExecSQL("select typname from pg_type where oid = " + oid);
+			if (result.getColumnCount() != 1 || result.getTupleCount() != 1)
+				throw new SQLException("Unexpected return from query for type");
+			result.next();
+			type_name = result.getString(1);
+			if (type_name.equals("int2"))				sql_type = Types.SMALLINT;
+			else if (type_name.equals("int4"))			sql_type = Types.INTEGER;
+			else if (type_name.equals("int8"))			sql_type = Types.BIGINT;
+			else if (type_name.equals("cash"))			sql_type = Types.DECIMAL;
+			else if (type_name.equals("money"))			sql_type = Types.DECIMAL;
+			else if (type_name.equals("float4"))			sql_type = Types.REAL;
+			else if (type_name.equals("float8"))			sql_type = Types.DOUBLE;
+			else if (type_name.equals("bpchar"))			sql_type = Types.CHAR;
+			else if (type_name.equals("varchar"))			sql_type = Types.VARCHAR;
+			else if (type_name.equals("bool"))			sql_type = Types.BIT;
+			else if (type_name.equals("date"))			sql_type = Types.DATE;
+			else if (type_name.equals("time"))			sql_type = Types.TIME;
+			else if (type_name.equals("abstime"))			sql_type = Types.TIMESTAMP;
+			else							sql_type = Types.OTHER;
+		}	
+		return sql_type;
+	}
+
+	/**
+	 * We also need to get the type name as returned by the back end.
+	 * This is held in type_name AFTER a call to getSQLType.  Since
+	 * we get this information within getSQLType (if it isn't already
+	 * done), we can just call getSQLType and throw away the result.
+	 *
+	 * @return the String representation of the type of this field
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getTypeName() throws SQLException
+	{
+		int sql = getSQLType();
+		return type_name;
+	}
+}

src/interfaces/jdbc/postgresql/PG_Object.java

+package postgresql;
+
+import java.lang.*;
+import java.sql.*;
+import java.util.*;
+import postgresql.*;
+
+/**
+ * postgresql.PG_Object is a class used to describe unknown types 
+ * An unknown type is any type that is unknown by JDBC Standards
+ *
+ * @version 1.0 15-APR-1997
+ * @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
+ */
+public class PG_Object
+{
+	public String	type;
+	public String	value;
+
+	/**
+	 *	Constructor for the PostgreSQL generic object
+	 *
+	 * @param type a string describing the type of the object
+	 * @param value a string representation of the value of the object
+	 */
+	public PG_Object(String type, String value)
+	{
+		this.type = type;
+		this.value = value;
+	}
+}

src/interfaces/jdbc/postgresql/PreparedStatement.java

+package postgresql;
+
+import java.io.*;
+import java.math.*;
+import java.sql.*;
+import java.text.*;
+import java.util.*;
+
+/**
+ * @version 1.0 15-APR-1997
+ * @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
+ *
+ * A SQL Statement is pre-compiled and stored in a PreparedStatement object.
+ * This object can then be used to efficiently execute this statement multiple
+ * times.
+ *
+ * <B>Note:</B> The setXXX methods for setting IN parameter values must
+ * specify types that are compatible with the defined SQL type of the input
+ * parameter.  For instance, if the IN parameter has SQL type Integer, then
+ * setInt should be used.
+ *
+ * If arbitrary parameter type conversions are required, then the setObject 
+ * method should be used with a target SQL type.
+ *
+ * @see ResultSet
+ * @see java.sql.PreparedStatement
+ */
+public class PreparedStatement extends Statement implements java.sql.PreparedStatement 
+{
+	String sql;
+	String[] templateStrings;
+	String[] inStrings;
+	Connection connection;
+
+	/**
+	 * Constructor for the PreparedStatement class.  Split the SQL statement
+	 * into segments - separated by the arguments.  When we rebuild the
+	 * thing with the arguments, we can substitute the args and join the
+	 * whole thing together.
+	 *
+	 * @param conn the instanatiating connection
+	 * @param sql the SQL statement with ? for IN markers
+	 * @exception SQLException if something bad occurs
+	 */
+	public PreparedStatement(Connection connection, String sql) throws SQLException
+	{
+		super(connection);
+
+		Vector v = new Vector();
+		boolean inQuotes = false;
+		int lastParmEnd = 0, i;
+
+		this.sql = sql;
+		this.connection = connection;
+		for (i = 0; i < sql.length(); ++i)
+		{
+			int c = sql.charAt(i);
+
+			if (c == '\'')
+				inQuotes = !inQuotes;
+			if (c == '?' && !inQuotes)
+			{
+				v.addElement(sql.substring (lastParmEnd, i));
+				lastParmEnd = i + 1;
+			}
+		}
+		v.addElement(sql.substring (lastParmEnd, sql.length()));
+
+		templateStrings = new String[v.size()];
+		inStrings = new String[v.size() - 1];
+		clearParameters();
+
+		for (i = 0 ; i < templateStrings.length; ++i)
+			templateStrings[i] = (String)v.elementAt(i);
+	}
+
+	/**
+	 * A Prepared SQL query is executed and its ResultSet is returned
+	 *
+	 * @return a ResultSet that contains the data produced by the
+	 *	query - never null
+	 * @exception SQLException if a database access error occurs
+	 */
+	public java.sql.ResultSet executeQuery() throws SQLException
+	{
+		StringBuffer s = new StringBuffer();
+		int i;
+
+		for (i = 0 ; i < inStrings.length ; ++i)
+		{
+			if (inStrings[i] == null)
+				throw new SQLException("No value specified for parameter " + (i + 1));
+			s.append (templateStrings[i]);
+			s.append (inStrings[i]);
+		}
+		s.append(templateStrings[inStrings.length]);
+		return super.executeQuery(s.toString()); 	// in Statement class
+	}
+
+	/**
+	 * Execute a SQL INSERT, UPDATE or DELETE statement.  In addition,
+	 * SQL statements that return nothing such as SQL DDL statements can
+	 * be executed.
+	 *
+	 * @return either the row count for INSERT, UPDATE or DELETE; or
+	 * 	0 for SQL statements that return nothing.
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int executeUpdate() throws SQLException
+	{
+		StringBuffer s = new StringBuffer();
+		int i;
+
+		for (i = 0 ; i < inStrings.length ; ++i)
+		{
+			if (inStrings[i] == null)
+				throw new SQLException("No value specified for parameter " + (i + 1));
+			s.append (templateStrings[i]);
+			s.append (inStrings[i]);
+		}
+		s.append(templateStrings[inStrings.length]);
+		return super.executeUpdate(s.toString()); 	// in Statement class
+	}	
+
+	/**
+	 * Set a parameter to SQL NULL
+	 *
+	 * <B>Note:</B> You must specify the parameters SQL type (although
+	 * PostgreSQL ignores it)
+	 *
+	 * @param parameterIndex the first parameter is 1, etc...
+	 * @param sqlType the SQL type code defined in java.sql.Types
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setNull(int parameterIndex, int sqlType) throws SQLException
+	{
+		set(parameterIndex, "null");
+	}
+
+	/**
+	 * Set a parameter to a Java boolean value.  The driver converts this
+	 * to a SQL BIT value when it sends it to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setBoolean(int parameterIndex, boolean x) throws SQLException
+	{
+		set(parameterIndex, x ? "'t'" : "'f'");
+	}
+
+	/**
+	 * Set a parameter to a Java byte value.  The driver converts this to
+	 * a SQL TINYINT value when it sends it to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setByte(int parameterIndex, byte x) throws SQLException
+	{
+		set(parameterIndex, (new Integer(x)).toString());
+	}
+
+	/**
+	 * Set a parameter to a Java short value.  The driver converts this
+	 * to a SQL SMALLINT value when it sends it to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setShort(int parameterIndex, short x) throws SQLException
+	{
+		set(parameterIndex, (new Integer(x)).toString());
+	}
+
+	/**
+	 * Set a parameter to a Java int value.  The driver converts this to
+	 * a SQL INTEGER value when it sends it to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setInt(int parameterIndex, int x) throws SQLException
+	{
+		set(parameterIndex, (new Integer(x)).toString());
+	}
+
+	/**
+	 * Set a parameter to a Java long value.  The driver converts this to
+	 * a SQL BIGINT value when it sends it to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setLong(int parameterIndex, long x) throws SQLException
+	{
+		set(parameterIndex, (new Long(x)).toString());
+	}
+
+	/**
+	 * Set a parameter to a Java float value.  The driver converts this
+	 * to a SQL FLOAT value when it sends it to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setFloat(int parameterIndex, float x) throws SQLException
+	{
+		set(parameterIndex, (new Float(x)).toString());
+	}
+
+	/**
+	 * Set a parameter to a Java double value.  The driver converts this
+	 * to a SQL DOUBLE value when it sends it to the database
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setDouble(int parameterIndex, double x) throws SQLException
+	{
+		set(parameterIndex, (new Double(x)).toString());
+	}
+
+	/**
+	 * Set a parameter to a java.lang.BigDecimal value.  The driver
+	 * converts this to a SQL NUMERIC value when it sends it to the
+	 * database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setBigDecimal(int parameterIndex, BigDecimal x) throws SQLException
+	{
+		set(parameterIndex, x.toString());
+	}
+
+	/**
+	 * Set a parameter to a Java String value.  The driver converts this
+	 * to a SQL VARCHAR or LONGVARCHAR value (depending on the arguments
+	 * size relative to the driver's limits on VARCHARs) when it sends it
+	 * to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setString(int parameterIndex, String x) throws SQLException
+	{
+		StringBuffer b = new StringBuffer();
+		int i;
+
+		b.append('\'');
+		for (i = 0 ; i < x.length() ; ++i)
+		{
+			char c = x.charAt(i);
+			if (c == '\\' || c == '\'')
+				b.append((char)'\\');
+			b.append(c);
+		}
+		b.append('\'');
+		set(parameterIndex, b.toString());
+	}
+
+	/**
+	 * Set a parameter to a Java array of bytes.  The driver converts this
+	 * to a SQL VARBINARY or LONGVARBINARY (depending on the argument's
+	 * size relative to the driver's limits on VARBINARYs) when it sends
+	 * it to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setBytes(int parameterIndex, byte x[]) throws SQLException
+	{
+		throw new SQLException("Binary Data not supported");
+	}
+
+	/**
+	 * Set a parameter to a java.sql.Date value.  The driver converts this
+	 * to a SQL DATE value when it sends it to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setDate(int parameterIndex, java.sql.Date x) throws SQLException
+	{
+		DateFormat df = DateFormat.getDateInstance();
+
+		set(parameterIndex, "'" + df.format(x) + "'");
+	}
+
+	/**
+	 * Set a parameter to a java.sql.Time value.  The driver converts
+	 * this to a SQL TIME value when it sends it to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setTime(int parameterIndex, Time x) throws SQLException
+	{
+		set(parameterIndex, "'" + x.toString() + "'");
+	}
+
+	/**
+	 * Set a parameter to a java.sql.Timestamp value.  The driver converts
+	 * this to a SQL TIMESTAMP value when it sends it to the database.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException
+	{
+		set(parameterIndex, "'" + x.toString() + "'");
+	}
+
+	/**
+	 * When a very large ASCII value is input to a LONGVARCHAR parameter,
+	 * it may be more practical to send it via a java.io.InputStream.
+	 * JDBC will read the data from the stream as needed, until it reaches
+	 * end-of-file.  The JDBC driver will do any necessary conversion from
+	 * ASCII to the database char format.
+	 *
+	 * <B>Note:</B> This stream object can either be a standard Java
+	 * stream object or your own subclass that implements the standard
+	 * interface.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @param length the number of bytes in the stream
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setAsciiStream(int parameterIndex, InputStream x, int length) throws SQLException
+	{
+		setBinaryStream(parameterIndex, x, length);
+	}
+
+	/**
+	 * When a very large Unicode value is input to a LONGVARCHAR parameter,
+	 * it may be more practical to send it via a java.io.InputStream.
+	 * JDBC will read the data from the stream as needed, until it reaches
+	 * end-of-file.  The JDBC driver will do any necessary conversion from
+	 * UNICODE to the database char format.
+	 *
+	 * <B>Note:</B> This stream object can either be a standard Java
+	 * stream object or your own subclass that implements the standard
+	 * interface.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException
+	{
+		setBinaryStream(parameterIndex, x, length);
+	}
+
+	/**
+	 * When a very large binary value is input to a LONGVARBINARY parameter,
+	 * it may be more practical to send it via a java.io.InputStream.
+	 * JDBC will read the data from the stream as needed, until it reaches
+	 * end-of-file.  
+	 *
+	 * <B>Note:</B> This stream object can either be a standard Java
+	 * stream object or your own subclass that implements the standard
+	 * interface.
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the parameter value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setBinaryStream(int parameterIndex, InputStream x, int length) throws SQLException
+	{
+		throw new SQLException("InputStream as parameter not supported");
+	}
+
+	/**
+	 * In general, parameter values remain in force for repeated used of a
+	 * Statement.  Setting a parameter value automatically clears its
+	 * previous value.  However, in coms cases, it is useful to immediately
+	 * release the resources used by the current parameter values; this
+	 * can be done by calling clearParameters
+	 *
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void clearParameters() throws SQLException
+	{
+		int i;
+
+		for (i = 0 ; i < inStrings.length ; i++)
+			inStrings[i] = null;
+	}
+
+	/**
+	 * Set the value of a parameter using an object; use the java.lang
+	 * equivalent objects for integral values.
+	 *
+	 * The given Java object will be converted to the targetSqlType before
+	 * being sent to the database.
+	 *
+	 * note that this method may be used to pass database-specific
+	 * abstract data types.  This is done by using a Driver-specific
+	 * Java type and using a targetSqlType of java.sql.Types.OTHER
+	 *
+	 * @param parameterIndex the first parameter is 1...
+	 * @param x the object containing the input parameter value
+	 * @param targetSqlType The SQL type to be send to the database
+	 * @param scale For java.sql.Types.DECIMAL or java.sql.Types.NUMERIC
+	 *	types this is the number of digits after the decimal.  For 
+	 *	all other types this value will be ignored.
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setObject(int parameterIndex, Object x, int targetSqlType, int scale) throws SQLException
+	{
+		switch (targetSqlType)
+		{
+			case Types.TINYINT:
+			case Types.SMALLINT:
+			case Types.INTEGER:
+			case Types.BIGINT:
+			case Types.REAL:
+			case Types.FLOAT:
+			case Types.DOUBLE:
+			case Types.DECIMAL:
+			case Types.NUMERIC:
+				if (x instanceof Boolean)
+					set(parameterIndex, ((Boolean)x).booleanValue() ? "1" : "0");
+				else
+					set(parameterIndex, x.toString());
+				break;
+			case Types.CHAR:
+			case Types.VARCHAR:
+			case Types.LONGVARCHAR:
+				setString(parameterIndex, x.toString());
+			case Types.DATE:
+				setDate(parameterIndex, (java.sql.Date)x);
+			case Types.TIME:
+				setTime(parameterIndex, (Time)x);
+			case Types.TIMESTAMP:
+				setTimestamp(parameterIndex, (Timestamp)x);
+			case Types.OTHER:
+				setString(parameterIndex, ((PG_Object)x).value);
+			default:
+				throw new SQLException("Unknown Types value");
+		}
+	}
+
+	public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException
+	{
+		setObject(parameterIndex, x, targetSqlType, 0);
+	}
+
+	public void setObject(int parameterIndex, Object x) throws SQLException
+	{
+		if (x instanceof String)
+			setString(parameterIndex, (String)x);
+		else if (x instanceof BigDecimal)
+			setBigDecimal(parameterIndex, (BigDecimal)x);
+		else if (x instanceof Integer)
+			setInt(parameterIndex, ((Integer)x).intValue());
+		else if (x instanceof Long)
+			setLong(parameterIndex, ((Long)x).longValue());
+		else if (x instanceof Float)
+			setFloat(parameterIndex, ((Float)x).floatValue());
+		else if (x instanceof Double)
+			setDouble(parameterIndex, ((Double)x).doubleValue());
+		else if (x instanceof byte[])
+			setBytes(parameterIndex, (byte[])x);
+		else if (x instanceof java.sql.Date)
+			setDate(parameterIndex, (java.sql.Date)x);
+		else if (x instanceof Time)
+			setTime(parameterIndex, (Time)x);
+		else if (x instanceof Timestamp)
+			setTimestamp(parameterIndex, (Timestamp)x);
+		else if (x instanceof Boolean)
+			setBoolean(parameterIndex, ((Boolean)x).booleanValue());
+		else if (x instanceof PG_Object)
+			setString(parameterIndex, ((PG_Object)x).value);
+		else
+			throw new SQLException("Unknown object type");
+	}
+
+	/**
+	 * Some prepared statements return multiple results; the execute method
+	 * handles these complex statements as well as the simpler form of 
+	 * statements handled by executeQuery and executeUpdate
+	 *
+	 * @return true if the next result is a ResultSet; false if it is an
+	 *	update count or there are no more results
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean execute() throws SQLException
+	{
+		StringBuffer s = new StringBuffer();
+		int i;
+
+		for (i = 0 ; i < inStrings.length ; ++i)
+		{
+			if (inStrings[i] == null)
+				throw new SQLException("No value specified for parameter " + (i + 1));
+			s.append (templateStrings[i]);
+			s.append (inStrings[i]);
+		}
+		s.append(templateStrings[inStrings.length]);
+		return super.execute(s.toString()); 	// in Statement class
+	}
+
+	// **************************************************************
+	//	END OF PUBLIC INTERFACE	
+	// **************************************************************
+	
+	/**
+	 * There are a lot of setXXX classes which all basically do
+	 * the same thing.  We need a method which actually does the
+	 * set for us.
+	 *
+	 * @param paramIndex the index into the inString
+	 * @param s a string to be stored
+	 * @exception SQLException if something goes wrong
+	 */
+	private void set(int paramIndex, String s) throws SQLException
+	{
+		if (paramIndex < 1 || paramIndex > inStrings.length)
+			throw new SQLException("Parameter index out of range");
+		inStrings[paramIndex - 1] = s;
+	}
+}

src/interfaces/jdbc/postgresql/ResultSet.java

+package postgresql;
+
+import java.lang.*;
+import java.io.*;
+import java.math.*;
+import java.text.*;
+import java.util.*;
+import java.sql.*;
+import postgresql.*;
+
+/**
+ * @version 1.0 15-APR-1997
+ * @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
+ *
+ * A ResultSet provides access to a table of data generated by executing a
+ * Statement.  The table rows are retrieved in sequence.  Within a row its
+ * column values can be accessed in any order.
+ *
+ * A ResultSet maintains a cursor pointing to its current row of data.  
+ * Initially the cursor is positioned before the first row.  The 'next'
+ * method moves the cursor to the next row.
+ *
+ * The getXXX methods retrieve column values for the current row.  You can
+ * retrieve values either using the index number of the column, or by using
+ * the name of the column.  In general using the column index will be more
+ * efficient.  Columns are numbered from 1.
+ *
+ * For maximum portability, ResultSet columns within each row should be read
+ * in left-to-right order and each column should be read only once.
+ *
+ * For the getXXX methods, the JDBC driver attempts to convert the underlying
+ * data to the specified Java type and returns a suitable Java value.  See the
+ * JDBC specification for allowable mappings from SQL types to Java types with
+ * the ResultSet getXXX methods.
+ *
+ * Column names used as input to getXXX methods are case insenstive.  When
+ * performing a getXXX using a column name, if several columns have the same
+ * name, then the value of the first matching column will be returned.  The
+ * column name option is designed to be used when column names are used in the
+ * SQL Query.  For columns that are NOT explicitly named in the query, it is
+ * best to use column numbers.  If column names were used there is no way for
+ * the programmer to guarentee that they actually refer to the intended
+ * columns.
+ *
+ * A ResultSet is automatically closed by the Statement that generated it 
+ * when that Statement is closed, re-executed, or is used to retrieve the 
+ * next result from a sequence of multiple results.
+ *
+ * The number, types and properties of a ResultSet's columns are provided by
+ * the ResultSetMetaData object returned by the getMetaData method.
+ *
+ * @see ResultSetMetaData
+ * @see java.sql.ResultSet
+ */
+public class ResultSet implements java.sql.ResultSet 
+{
+	Vector rows;		// The results
+	Field fields[];		// The field descriptions
+	String status;		// Status of the result
+	int updateCount;	// How many rows did we get back?
+	int current_row;	// Our pointer to where we are at
+	byte[][] this_row;	// the current row result
+	Connection connection;	// the connection which we returned from
+	SQLWarning warnings = null;	// The warning chain
+	boolean wasNullFlag = false;	// the flag for wasNull()
+
+	//  We can chain multiple resultSets together - this points to
+	// next resultSet in the chain.
+	private ResultSet next = null;
+
+	/**
+	 * Create a new ResultSet - Note that we create ResultSets to
+	 * represent the results of everything.
+	 *
+	 * @param fields an array of Field objects (basically, the
+	 *	ResultSet MetaData)
+	 * @param tuples Vector of the actual data
+	 * @param status the status string returned from the back end
+	 * @param updateCount the number of rows affected by the operation
+	 * @param cursor the positioned update/delete cursor name
+	 */
+	public ResultSet(Connection conn, Field[] fields, Vector tuples, String status, int updateCount)
+	{
+		this.connection = conn;
+		this.fields = fields;
+		this.rows = tuples;
+		this.status = status;
+		this.updateCount = updateCount;
+		this.this_row = null;
+		this.current_row = -1;
+	}
+
+	/**
+	 * A ResultSet is initially positioned before its first row,
+	 * the first call to next makes the first row the current row;
+	 * the second call makes the second row the current row, etc.
+	 *
+	 * If an input stream from the previous row is open, it is
+	 * implicitly closed.  The ResultSet's warning chain is cleared
+	 * when a new row is read
+	 *
+	 * @return true if the new current is valid; false if there are no
+	 *	more rows
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean next() throws SQLException
+	{
+		if (++current_row >= rows.size())
+			return false;
+		this_row = (byte [][])rows.elementAt(current_row);
+		return true;
+	}
+
+	/**
+	 * In some cases, it is desirable to immediately release a ResultSet
+	 * database and JDBC resources instead of waiting for this to happen
+	 * when it is automatically closed.  The close method provides this
+	 * immediate release.
+	 *
+	 * <B>Note:</B> A ResultSet is automatically closed by the Statement
+	 * the Statement that generated it when that Statement is closed,
+	 * re-executed, or is used to retrieve the next result from a sequence
+	 * of multiple results.  A ResultSet is also automatically closed 
+	 * when it is garbage collected.
+	 *
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void close() throws SQLException
+	{
+		// No-op
+	}
+
+	/**
+	 * A column may have the value of SQL NULL; wasNull() reports whether
+	 * the last column read had this special value.  Note that you must
+	 * first call getXXX on a column to try to read its value and then
+	 * call wasNull() to find if the value was SQL NULL
+	 *
+	 * @return true if the last column read was SQL NULL
+	 * @exception SQLException if a database access error occurred
+	 */
+	public boolean wasNull() throws SQLException
+	{
+		return wasNullFlag;
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java String
+	 *
+	 * @param columnIndex the first column is 1, the second is 2...
+	 * @return the column value, null for SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getString(int columnIndex) throws SQLException
+	{
+		byte[] bytes = getBytes(columnIndex);
+
+		if (bytes == null)
+			return null;
+		return new String(bytes);
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java boolean
+	 *
+	 * @param columnIndex the first column is 1, the second is 2...
+	 * @return the column value, false for SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean getBoolean(int columnIndex) throws SQLException
+	{
+		String s = getString(columnIndex);
+
+		if (s != null)
+		{
+			int c = s.charAt(0);
+			return ((c == 't') || (c == 'T'));
+		}
+		return false;		// SQL NULL
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java byte.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2,...
+	 * @return the column value; 0 if SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public byte getByte(int columnIndex) throws SQLException
+	{
+		String s = getString(columnIndex);
+		
+		if (s != null)
+		{
+			try
+			{
+				return Byte.parseByte(s);
+			} catch (NumberFormatException e) {
+				throw new SQLException("Bad Byte Form: " + s);
+			}
+		}
+		return 0;		// SQL NULL
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java short.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2,...
+	 * @return the column value; 0 if SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public short getShort(int columnIndex) throws SQLException
+	{
+		String s = getString(columnIndex);
+
+		if (s != null)
+		{
+			try
+			{
+				return Short.parseShort(s);
+			} catch (NumberFormatException e) {
+				throw new SQLException("Bad Short Form: " + s);
+			}
+		}
+		return 0;		// SQL NULL
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java int.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2,...
+	 * @return the column value; 0 if SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getInt(int columnIndex) throws SQLException
+	{
+		String s = getString(columnIndex);
+
+		if (s != null)
+		{
+			try
+			{
+				return Integer.parseInt(s);
+			} catch (NumberFormatException e) {
+				throw new SQLException ("Bad Integer Form: " + s);
+			}
+		}
+		return 0;		// SQL NULL
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java long.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2,...
+	 * @return the column value; 0 if SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public long getLong(int columnIndex) throws SQLException
+	{
+		String s = getString(columnIndex);
+
+		if (s != null)
+		{
+			try
+			{
+				return Long.parseLong(s);
+			} catch (NumberFormatException e) {
+				throw new SQLException ("Bad Long Form: " + s);
+			}
+		}
+		return 0;		// SQL NULL
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java float.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2,...
+	 * @return the column value; 0 if SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public float getFloat(int columnIndex) throws SQLException
+	{
+		String s = getString(columnIndex);
+	
+		if (s != null)
+		{
+			try
+			{
+				return Float.valueOf(s).floatValue();
+			} catch (NumberFormatException e) {
+				throw new SQLException ("Bad Float Form: " + s);
+			}
+		}
+		return 0;		// SQL NULL
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java double.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2,...
+	 * @return the column value; 0 if SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public double getDouble(int columnIndex) throws SQLException
+	{
+		String s = getString(columnIndex);
+	
+		if (s != null)
+		{
+			try
+			{
+				return Double.valueOf(s).doubleValue();
+			} catch (NumberFormatException e) {
+				throw new SQLException ("Bad Double Form: " + s);
+			}
+		}
+		return 0;		// SQL NULL
+	}
+
+	/**
+	 * Get the value of a column in the current row as a 
+	 * java.lang.BigDecimal object
+	 *
+	 * @param columnIndex  the first column is 1, the second is 2...
+	 * @param scale the number of digits to the right of the decimal
+	 * @return the column value; if the value is SQL NULL, null
+	 * @exception SQLException if a database access error occurs
+	 */
+	public BigDecimal getBigDecimal(int columnIndex, int scale) throws SQLException
+	{
+		String s = getString(columnIndex);
+		BigDecimal val;
+
+		if (s != null)
+		{
+			try
+			{
+				val = new BigDecimal(s);
+			} catch (NumberFormatException e) {
+				throw new SQLException ("Bad BigDecimal Form: " + s);
+			}
+			try
+			{
+				return val.setScale(scale);
+			} catch (ArithmeticException e) {
+				throw new SQLException ("Bad BigDecimal Form: " + s);
+			}
+		}
+		return null;		// SQL NULL
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java byte array
+	 * The bytes represent the raw values returned by the driver.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2, ...
+	 * @return the column value; if the value is SQL NULL, the result
+	 *	is null
+	 * @exception SQLException if a database access error occurs
+	 */
+	public byte[] getBytes(int columnIndex) throws SQLException
+	{
+		if (columnIndex < 1 || columnIndex > fields.length)
+			throw new SQLException("Column Index out of range");
+		wasNullFlag = (this_row[columnIndex - 1] == null);
+		return this_row[columnIndex - 1];
+	}
+
+	/**
+	 * Get the value of a column in the current row as a java.sql.Date
+	 * object
+	 *
+	 * @param columnIndex the first column is 1, the second is 2...
+	 * @return the column value; null if SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public java.sql.Date getDate(int columnIndex) throws SQLException
+	{
+		String s = getString(columnIndex);
+	
+		if (s != null)
+		{
+			try
+			{
+				if (s.length() != 10)
+					throw new NumberFormatException("Wrong Length!");
+				int mon = Integer.parseInt(s.substring(0,2));
+				int day = Integer.parseInt(s.substring(3,5));
+				int yr = Integer.parseInt(s.substring(6));
+				return new java.sql.Date(yr - 1900, mon -1, day);
+			} catch (NumberFormatException e) {
+				throw new SQLException("Bad Date Form: " + s);
+			}
+		}
+		return null;		// SQL NULL
+	}
+
+	/**
+	 * Get the value of a column in the current row as a java.sql.Time
+	 * object
+	 *
+	 * @param columnIndex the first column is 1, the second is 2...
+	 * @return the column value; null if SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public Time getTime(int columnIndex) throws SQLException
+	{
+		String s = getString(columnIndex);
+
+		if (s != null)
+		{
+			try
+			{
+				if (s.length() != 5 && s.length() != 8)
+					throw new NumberFormatException("Wrong Length!");
+				int hr = Integer.parseInt(s.substring(0,2));
+				int min = Integer.parseInt(s.substring(3,5));
+				int sec = (s.length() == 5) ? 0 : Integer.parseInt(s.substring(6));
+				return new Time(hr, min, sec);
+			} catch (NumberFormatException e) {
+				throw new SQLException ("Bad Time Form: " + s);
+			}
+		}
+		return null;		// SQL NULL
+	}
+
+	/**
+	 * Get the value of a column in the current row as a 
+	 * java.sql.Timestamp object
+	 *
+	 * @param columnIndex the first column is 1, the second is 2...
+	 * @return the column value; null if SQL NULL
+	 * @exception SQLException if a database access error occurs
+	 */
+	public Timestamp getTimestamp(int columnIndex) throws SQLException
+	{
+		String s = getString(columnIndex);
+		DateFormat df = DateFormat.getDateInstance();
+
+		if (s != null)
+		{
+			try
+			{
+				java.sql.Date d = (java.sql.Date)df.parse(s);
+				return new Timestamp(d.getTime());
+			} catch (ParseException e) {
+				throw new SQLException("Bad Timestamp Format: " + s);
+			}
+		}
+		return null;		// SQL NULL
+	}
+
+	/**
+	 * A column value can be retrieved as a stream of ASCII characters
+	 * and then read in chunks from the stream.  This method is 
+	 * particular suitable for retrieving large LONGVARCHAR values.
+	 * The JDBC driver will do any necessary conversion from the
+	 * database format into ASCII.
+	 *
+	 * <B>Note:</B> All the data in the returned stream must be read
+	 * prior to getting the value of any other column.  The next call
+	 * to a get method implicitly closes the stream.  Also, a stream
+	 * may return 0 for available() whether there is data available
+	 * or not.
+	 *
+	 * We implement an ASCII stream as a Binary stream - we should really
+	 * do the data conversion, but I cannot be bothered to implement this
+	 * right now.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2, ...
+	 * @return a Java InputStream that delivers the database column
+	 * 	value as a stream of one byte ASCII characters.  If the
+	 *	value is SQL NULL then the result is null
+	 * @exception SQLException if a database access error occurs
+	 * @see getBinaryStream
+	 */
+	public InputStream getAsciiStream(int columnIndex) throws SQLException
+	{
+		return getBinaryStream(columnIndex);
+	}
+
+	/**
+	 * A column value can also be retrieved as a stream of Unicode
+	 * characters. We implement this as a binary stream.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2...
+	 * @return a Java InputStream that delivers the database column value
+	 * 	as a stream of two byte Unicode characters.  If the value is
+	 *	SQL NULL, then the result is null
+	 * @exception SQLException if a database access error occurs
+	 * @see getAsciiStream
+	 * @see getBinaryStream
+	 */
+	public InputStream getUnicodeStream(int columnIndex) throws SQLException
+	{
+		return getBinaryStream(columnIndex);
+	}
+
+	/**
+	 * A column value can also be retrieved as a binary strea.  This
+	 * method is suitable for retrieving LONGVARBINARY values.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2...
+	 * @return a Java InputStream that delivers the database column value
+	 * 	as a stream of two byte Unicode characters.  If the value is
+	 *	SQL NULL, then the result is null
+	 * @exception SQLException if a database access error occurs
+	 * @see getAsciiStream
+	 * @see getUnicodeStream
+	 */
+	public InputStream getBinaryStream(int columnIndex) throws SQLException
+	{
+		byte b[] = getBytes(columnIndex);
+
+		if (b != null)
+			return new ByteArrayInputStream(b);
+		return null;		// SQL NULL
+	}
+
+	/**
+	 * The following routines simply convert the columnName into
+	 * a columnIndex and then call the appropriate routine above.
+	 *
+	 * @param columnName is the SQL name of the column
+	 * @return the column value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getString(String columnName) throws SQLException
+	{
+		return getString(findColumn(columnName));
+	}
+
+	public boolean getBoolean(String columnName) throws SQLException
+	{
+		return getBoolean(findColumn(columnName));
+	}
+
+	public byte getByte(String columnName) throws SQLException
+	{
+
+		return getByte(findColumn(columnName));
+	}
+
+	public short getShort(String columnName) throws SQLException
+	{
+		return getShort(findColumn(columnName));
+	}
+
+	public int getInt(String columnName) throws SQLException
+	{
+		return getInt(findColumn(columnName));
+	}
+
+	public long getLong(String columnName) throws SQLException
+	{
+		return getLong(findColumn(columnName));
+	}
+
+	public float getFloat(String columnName) throws SQLException
+	{
+		return getFloat(findColumn(columnName));
+	}
+
+	public double getDouble(String columnName) throws SQLException
+	{
+		return getDouble(findColumn(columnName));
+	}
+
+	public BigDecimal getBigDecimal(String columnName, int scale) throws SQLException
+	{
+		return getBigDecimal(findColumn(columnName), scale);
+	}
+
+	public byte[] getBytes(String columnName) throws SQLException
+	{
+		return getBytes(findColumn(columnName));
+	}
+
+	public java.sql.Date getDate(String columnName) throws SQLException
+	{
+		return getDate(findColumn(columnName));
+	}
+
+	public Time getTime(String columnName) throws SQLException
+	{
+		return getTime(findColumn(columnName));
+	}
+
+	public Timestamp getTimestamp(String columnName) throws SQLException
+	{
+		return getTimestamp(findColumn(columnName));
+	}
+
+	public InputStream getAsciiStream(String columnName) throws SQLException
+	{
+		return getAsciiStream(findColumn(columnName));
+	}
+
+	public InputStream getUnicodeStream(String columnName) throws SQLException
+	{
+		return getUnicodeStream(findColumn(columnName));
+	}
+
+	public InputStream getBinaryStream(String columnName) throws SQLException
+	{
+		return getBinaryStream(findColumn(columnName));
+	}
+
+	/**
+	 * The first warning reported by calls on this ResultSet is
+	 * returned.  Subsequent ResultSet warnings will be chained
+	 * to this SQLWarning.
+	 *
+	 * The warning chain is automatically cleared each time a new
+	 * row is read.
+	 *
+	 * <B>Note:</B> This warning chain only covers warnings caused by
+	 * ResultSet methods.  Any warnings caused by statement methods
+	 * (such as reading OUT parameters) will be chained on the
+	 * Statement object.
+	 *
+	 * @return the first SQLWarning or null;
+	 * @exception SQLException if a database access error occurs.
+	 */
+	public SQLWarning getWarnings() throws SQLException
+	{
+		return warnings;
+	}
+
+	/**
+	 * After this call, getWarnings returns null until a new warning
+	 * is reported for this ResultSet
+	 *
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void clearWarnings() throws SQLException
+	{
+		warnings = null;
+	}
+
+	/**
+	 * Get the name of the SQL cursor used by this ResultSet
+	 *
+	 * In SQL, a result table is retrieved though a cursor that is
+	 * named.  The current row of a result can be updated or deleted
+	 * using a positioned update/delete statement that references
+	 * the cursor name.
+	 *
+	 * JDBC supports this SQL feature by providing the name of the
+	 * SQL cursor used by a ResultSet.  The current row of a ResulSet
+	 * is also the current row of this SQL cursor.
+	 *
+	 * <B>Note:</B> If positioned update is not supported, a SQLException
+	 * is thrown.
+	 *
+	 * @return the ResultSet's SQL cursor name.
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getCursorName() throws SQLException
+	{
+		return connection.getCursorName();
+	}
+
+	/**
+	 * The numbers, types and properties of a ResultSet's columns are
+	 * provided by the getMetaData method
+	 *
+	 * @return a description of the ResultSet's columns
+	 * @exception SQLException if a database access error occurs
+	 */
+	public java.sql.ResultSetMetaData getMetaData() throws SQLException
+	{
+		return new ResultSetMetaData(rows, fields);
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java object
+	 *
+	 * This method will return the value of the given column as a
+	 * Java object.  The type of the Java object will be the default
+	 * Java Object type corresponding to the column's SQL type, following
+	 * the mapping specified in the JDBC specification.
+	 *
+	 * This method may also be used to read database specific abstract
+	 * data types.
+	 *
+	 * @param columnIndex the first column is 1, the second is 2...
+	 * @return a Object holding the column value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public Object getObject(int columnIndex) throws SQLException
+	{
+		Field field;
+		
+		if (columnIndex < 1 || columnIndex > fields.length)
+			throw new SQLException("Column index out of range");
+		field = fields[columnIndex - 1];
+
+		switch (field.getSQLType())
+		{
+			case Types.BIT:
+				return new Boolean(getBoolean(columnIndex));
+			case Types.SMALLINT:
+				return new Integer(getInt(columnIndex));
+			case Types.INTEGER:
+				return new Integer(getInt(columnIndex));
+			case Types.BIGINT:
+				return new Long(getLong(columnIndex));
+			case Types.NUMERIC:
+				return getBigDecimal(columnIndex, 0);
+			case Types.REAL:
+				return new Float(getFloat(columnIndex));
+			case Types.DOUBLE:
+				return new Double(getDouble(columnIndex));
+			case Types.CHAR:
+			case Types.VARCHAR:
+				return getString(columnIndex);
+			case Types.DATE:
+				return getDate(columnIndex);
+			case Types.TIME:
+				return getTime(columnIndex);
+			case Types.TIMESTAMP:
+				return getTimestamp(columnIndex);
+			default:
+				return new PG_Object(field.getTypeName(), getString(columnIndex));
+		}
+	}
+
+	/**
+	 * Get the value of a column in the current row as a Java object
+	 *
+	 * This method will return the value of the given column as a
+	 * Java object.  The type of the Java object will be the default
+	 * Java Object type corresponding to the column's SQL type, following
+	 * the mapping specified in the JDBC specification.
+	 *
+	 * This method may also be used to read database specific abstract
+	 * data types.
+	 *
+	 * @param columnName is the SQL name of the column
+	 * @return a Object holding the column value
+	 * @exception SQLException if a database access error occurs
+	 */
+	public Object getObject(String columnName) throws SQLException
+	{
+		return getObject(findColumn(columnName));
+	}
+
+	/**
+	 * Map a ResultSet column name to a ResultSet column index
+	 *
+	 * @param columnName the name of the column
+	 * @return the column index
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int findColumn(String columnName) throws SQLException
+	{
+		int i;
+
+		for (i = 0 ; i < fields.length; ++i)
+			if (fields[i].name.equalsIgnoreCase(columnName))
+				return (i+1);
+		throw new SQLException ("Column name not found");
+	}
+
+	// ************************************************************
+	//	END OF PUBLIC INTERFACE
+	// ************************************************************
+	
+	/**
+	 * We at times need to know if the resultSet we are working
+	 * with is the result of an UPDATE, DELETE or INSERT (in which
+	 * case, we only have a row count), or of a SELECT operation
+	 * (in which case, we have multiple fields) - this routine
+	 * tells us.
+	 *
+	 * @return true if we have tuples available
+	 */
+	public boolean reallyResultSet()
+	{
+		return (fields != null);
+	}
+
+	/**
+	 * Since ResultSets can be chained, we need some method of
+	 * finding the next one in the chain.  The method getNext()
+	 * returns the next one in the chain.
+	 *
+	 * @return the next ResultSet, or null if there are none
+	 */
+	public ResultSet getNext()
+	{
+		return next;
+	}
+
+	/**
+	 * This following method allows us to add a ResultSet object
+	 * to the end of the current chain.
+	 *
+	 * @param r the resultset to add to the end of the chain.
+	 */
+	public void append(ResultSet r)
+	{
+		if (next == null)
+			next = r;
+		else
+			next.append(r);
+	}
+
+	/**
+	 * If we are just a place holder for results, we still need
+	 * to get an updateCount.  This method returns it.
+	 *
+	 * @return the updateCount
+	 */
+	public int getResultCount()
+	{
+		return updateCount;
+	}
+
+	/**
+	 * We also need to provide a couple of auxiliary functions for
+	 * the implementation of the ResultMetaData functions.  In
+	 * particular, we need to know the number of rows and the
+	 * number of columns.  Rows are also known as Tuples
+	 *
+	 * getTupleCount returns the number of rows
+	 *
+	 * @return the number of rows
+	 */
+	public int getTupleCount()
+	{
+		return rows.size();
+	}
+
+	/**
+	 * getColumnCount returns the number of columns
+	 *
+	 * @return the number of columns
+	 */
+	public int getColumnCount()
+	{
+		return fields.length;
+	}
+}

src/interfaces/jdbc/postgresql/ResultSetMetaData.java

+package postgresql;
+
+import java.lang.*;
+import java.sql.*;
+import java.util.*;
+import postgresql.*;
+
+/**
+ * @version 1.0 15-APR-1997
+ * @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
+ *
+ * A ResultSetMetaData object can be used to find out about the types and
+ * properties of the columns in a ResultSet
+ *
+ * @see java.sql.ResultSetMetaData
+ */
+public class ResultSetMetaData implements java.sql.ResultSetMetaData 
+{
+	Vector rows;
+	Field[] fields;
+
+	/**
+	 *	Initialise for a result with a tuple set and
+	 *	a field descriptor set
+	 *
+	 * @param rows the Vector of rows returned by the ResultSet
+	 * @param fields the array of field descriptors
+	 */
+	public ResultSetMetaData(Vector rows, Field[] fields)
+	{
+		this.rows = rows;
+		this.fields = fields;
+	}
+	
+	/**
+	 * Whats the number of columns in the ResultSet?
+	 *
+	 * @return the number
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getColumnCount() throws SQLException
+	{
+		return fields.length;
+	}
+
+	/**
+	 * Is the column automatically numbered (and thus read-only)
+	 * I believe that PostgreSQL does not support this feature.
+	 *
+	 * @param column the first column is 1, the second is 2...
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isAutoIncrement(int column) throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Does a column's case matter? ASSUMPTION: Any field that is
+	 * not obviously case insensitive is assumed to be case sensitive
+	 *
+	 * @param column the first column is 1, the second is 2...
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isCaseSensitive(int column) throws SQLException
+	{
+		int sql_type = getField(column).getSQLType();
+
+		switch (sql_type)
+		{
+			case Types.SMALLINT:
+			case Types.INTEGER:
+			case Types.FLOAT:
+			case Types.REAL:
+			case Types.DOUBLE:
+			case Types.DATE:
+			case Types.TIME:
+			case Types.TIMESTAMP:
+				return false;
+			default:
+				return true;
+		}
+	}
+
+	/**
+	 * Can the column be used in a WHERE clause?  Basically for
+	 * this, I split the functions into two types: recognised
+	 * types (which are always useable), and OTHER types (which
+	 * may or may not be useable).  The OTHER types, for now, I
+	 * will assume they are useable.  We should really query the
+	 * catalog to see if they are useable.
+	 *
+	 * @param column the first column is 1, the second is 2...
+	 * @return true if they can be used in a WHERE clause
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isSearchable(int column) throws SQLException
+	{
+		int sql_type = getField(column).getSQLType();
+
+		// This switch is pointless, I know - but it is a set-up
+		// for further expansion.		
+		switch (sql_type)
+		{
+			case Types.OTHER:
+				return true;
+			default:
+				return true;
+		}
+	}
+
+	/**
+	 * Is the column a cash value?  6.1 introduced the cash/money
+	 * type, which haven't been incorporated as of 970414, so I
+	 * just check the type name for both 'cash' and 'money'
+	 *
+	 * @param column the first column is 1, the second is 2...
+	 * @return true if its a cash column
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isCurrency(int column) throws SQLException
+	{
+		String type_name = getField(column).getTypeName();
+
+		if (type_name.equals("cash"))
+			return true;
+		if (type_name.equals("money"))
+			return true;
+		return false;
+	}
+
+	/**
+	 * Can you put a NULL in this column?  I think this is always
+	 * true in 6.1's case.  It would only be false if the field had
+	 * been defined NOT NULL (system catalogs could be queried?)
+	 *
+	 * @param column the first column is 1, the second is 2...
+	 * @return one of the columnNullable values
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int isNullable(int column) throws SQLException
+	{
+		return columnNullable;	// We can always put NULL in
+	}
+
+	/**
+	 * Is the column a signed number? In PostgreSQL, all numbers
+	 * are signed, so this is trivial.  However, strings are not
+	 * signed (duh!)
+	 * 
+	 * @param column the first column is 1, the second is 2...
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isSigned(int column) throws SQLException
+	{
+		int sql_type = getField(column).getSQLType();
+	
+		switch (sql_type)
+		{
+			case Types.SMALLINT:
+			case Types.INTEGER:
+			case Types.FLOAT:
+			case Types.REAL:
+			case Types.DOUBLE:
+				return true;
+			case Types.DATE:
+			case Types.TIME:
+			case Types.TIMESTAMP:
+				return false;	// I don't know about these?
+			default:
+				return false;
+		}
+	}
+
+	/**
+	 * What is the column's normal maximum width in characters?
+	 *
+	 * @param column the first column is 1, the second is 2, etc.
+	 * @return the maximum width
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getColumnDisplaySize(int column) throws SQLException
+	{
+		int max = getColumnLabel(column).length();
+		int i;
+
+		for (i = 0 ; i < rows.size(); ++i)
+		{
+			byte[][] x = (byte[][])(rows.elementAt(i));
+			int xl = x[column - 1].length;
+			if (xl > max)
+				max = xl;
+		}
+		return max;
+	}
+
+	/**
+	 * What is the suggested column title for use in printouts and
+	 * displays?  We suggest the ColumnName!
+	 *
+	 * @param column the first column is 1, the second is 2, etc.
+	 * @return the column label
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getColumnLabel(int column) throws SQLException
+	{
+		return getColumnName(column);
+	}
+
+	/**
+	 * What's a column's name?
+	 *
+	 * @param column the first column is 1, the second is 2, etc.
+	 * @return the column name
+	 * @exception SQLException if a databvase access error occurs
+	 */
+	public String getColumnName(int column) throws SQLException
+	{
+		return getField(column).name;
+	}
+
+	/**
+	 * What is a column's table's schema?  This relies on us knowing
+	 * the table name....which I don't know how to do as yet.  The 
+	 * JDBC specification allows us to return "" if this is not
+	 * applicable.
+	 *
+	 * @param column the first column is 1, the second is 2...
+	 * @return the Schema
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getSchemaName(int column) throws SQLException
+	{
+		String table_name = getTableName(column);
+
+		// If the table name is invalid, so are we.
+		if (table_name.equals(""))
+			return "";	
+		return "";		// Ok, so I don't know how to
+					// do this as yet.
+	}
+
+	/**
+	 * What is a column's number of decimal digits.
+	 *
+	 * @param column the first column is 1, the second is 2...
+	 * @return the precision
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getPrecision(int column) throws SQLException
+	{
+		int sql_type = getField(column).getSQLType();
+
+		switch (sql_type)
+		{
+			case Types.SMALLINT:
+				return 5;	
+			case Types.INTEGER:
+				return 10;
+			case Types.REAL:
+				return 8;
+			case Types.FLOAT:
+				return 16;
+			case Types.DOUBLE:
+				return 16;
+			default:
+				throw new SQLException("no precision for non-numeric data types.");
+		}
+	}
+
+	/**
+	 * What is a column's number of digits to the right of the
+	 * decimal point?
+	 *
+	 * @param column the first column is 1, the second is 2...
+	 * @return the scale
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getScale(int column) throws SQLException
+	{
+		int sql_type = getField(column).getSQLType();
+
+		switch (sql_type)
+		{
+			case Types.SMALLINT:
+				return 0;
+			case Types.INTEGER:
+				return 0;
+			case Types.REAL:
+				return 8;
+			case Types.FLOAT:
+				return 16;
+			case Types.DOUBLE:
+				return 16;
+			default:
+				throw new SQLException("no scale for non-numeric data types");
+		}
+	}
+
+	/**
+	 * Whats a column's table's name?  How do I find this out?  Both
+	 * getSchemaName() and getCatalogName() rely on knowing the table
+	 * Name, so we need this before we can work on them.
+	 *
+	 * @param column the first column is 1, the second is 2...
+	 * @return column name, or "" if not applicable
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getTableName(int column) throws SQLException
+	{
+		return "";
+	}
+
+	/**
+	 * What's a column's table's catalog name?  As with getSchemaName(),
+	 * we can say that if getTableName() returns n/a, then we can too -
+	 * otherwise, we need to work on it.
+	 * 
+	 * @param column the first column is 1, the second is 2...
+	 * @return catalog name, or "" if not applicable
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getCatalogName(int column) throws SQLException
+	{
+		String table_name = getTableName(column);
+
+		if (table_name.equals(""))
+			return "";
+		return "";		// As with getSchemaName(), this
+					// is just the start of it.
+	}
+	
+	/**
+	 * What is a column's SQL Type? (java.sql.Type int)
+	 *
+	 * @param column the first column is 1, the second is 2, etc.
+	 * @return the java.sql.Type value
+	 * @exception SQLException if a database access error occurs
+	 * @see postgresql.Field#getSQLType
+	 * @see java.sql.Types
+	 */
+	public int getColumnType(int column) throws SQLException
+	{
+		return getField(column).getSQLType();
+	}
+
+	/**
+	 * Whats is the column's data source specific type name?
+	 *
+	 * @param column the first column is 1, the second is 2, etc.
+	 * @return the type name
+	 * @exception SQLException if a database access error occurs
+	 */
+	public String getColumnTypeName(int column) throws SQLException
+	{
+		return getField(column).getTypeName();
+	}
+
+	/**
+	 * Is the column definitely not writable?  In reality, we would
+	 * have to check the GRANT/REVOKE stuff for this to be effective,
+	 * and I haven't really looked into that yet, so this will get
+	 * re-visited.
+	 *
+	 * @param column the first column is 1, the second is 2, etc.
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isReadOnly(int column) throws SQLException
+	{
+		return false;
+	}
+
+	/**
+	 * Is it possible for a write on the column to succeed?  Again, we
+	 * would in reality have to check the GRANT/REVOKE stuff, which
+	 * I haven't worked with as yet.  However, if it isn't ReadOnly, then
+	 * it is obviously writable.
+	 *
+	 * @param column the first column is 1, the second is 2, etc.
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isWritable(int column) throws SQLException
+	{
+		if (isReadOnly(column))
+			return true;
+		else
+			return false;
+	}
+
+	/**
+	 * Will a write on this column definately succeed?  Hmmm...this
+	 * is a bad one, since the two preceding functions have not been
+	 * really defined.  I cannot tell is the short answer.  I thus
+	 * return isWritable() just to give us an idea.
+	 *
+	 * @param column the first column is 1, the second is 2, etc..
+	 * @return true if so
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean isDefinitelyWritable(int column) throws SQLException
+	{
+		return isWritable(column);
+	}
+
+	// ********************************************************
+	// 	END OF PUBLIC INTERFACE
+	// ********************************************************
+	
+	/**
+	 * For several routines in this package, we need to convert
+	 * a columnIndex into a Field[] descriptor.  Rather than do
+	 * the same code several times, here it is.
+	 * 
+	 * @param columnIndex the first column is 1, the second is 2...
+	 * @return the Field description
+	 * @exception SQLException if a database access error occurs
+	 */
+	private Field getField(int columnIndex) throws SQLException
+	{
+		if (columnIndex < 1 || columnIndex > fields.length)
+			throw new SQLException("Column index out of range");
+		return fields[columnIndex - 1];
+	}
+}

src/interfaces/jdbc/postgresql/Statement.java

+package postgresql;
+
+import java.sql.*;
+
+/**
+ * @version 1.0 15-APR-1997
+ * @author <A HREF="mailto:adrian@hottub.org">Adrian Hall</A>
+ *
+ * A Statement object is used for executing a static SQL statement and
+ * obtaining the results produced by it.
+ *
+ * Only one ResultSet per Statement can be open at any point in time.  
+ * Therefore, if the reading of one ResultSet is interleaved with the
+ * reading of another, each must have been generated by different
+ * Statements.  All statement execute methods implicitly close a
+ * statement's current ResultSet if an open one exists.
+ *
+ * @see java.sql.Statement
+ * @see ResultSet
+ */
+public class Statement implements java.sql.Statement
+{
+	Connection connection;		// The connection who created us
+	ResultSet result = null;	// The current results
+	SQLWarning warnings = null;	// The warnings chain.
+	int maxrows = 0;		// maximum no. of rows; 0 = unlimited
+	int timeout = 0;		// The timeout for a query (not used)
+	boolean escapeProcessing = true;// escape processing flag
+
+	/**
+	 * Constructor for a Statement.  It simply sets the connection
+	 * that created us.
+	 *
+	 * @param c the Connection instantation that creates us
+	 */
+	public Statement (Connection c)
+	{
+		connection = c;
+	}
+
+	/**
+	 * Execute a SQL statement that retruns a single ResultSet
+	 *
+	 * @param sql typically a static SQL SELECT statement
+	 * @return a ResulSet that contains the data produced by the query
+	 * @exception SQLException if a database access error occurs
+	 */
+	public java.sql.ResultSet executeQuery(String sql) throws SQLException
+	{
+		this.execute(sql);
+		while (result != null && !result.reallyResultSet())
+			result = result.getNext();
+		if (result == null)
+			throw new SQLException("no results returned");
+		return result;
+	}
+
+	/**
+	 * Execute a SQL INSERT, UPDATE or DELETE statement.  In addition
+	 * SQL statements that return nothing such as SQL DDL statements
+	 * can be executed
+	 *
+	 * @param sql a SQL statement
+	 * @return either a row count, or 0 for SQL commands
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int executeUpdate(String sql) throws SQLException
+	{
+		this.execute(sql);
+		if (result.reallyResultSet())
+			throw new SQLException("results returned");
+		return this.getUpdateCount();
+	}
+
+	/**
+	 * In many cases, it is desirable to immediately release a
+	 * Statement's database and JDBC resources instead of waiting
+	 * for this to happen when it is automatically closed.  The
+	 * close method provides this immediate release.
+	 *
+	 * <B>Note:</B> A Statement is automatically closed when it is 
+	 * garbage collected.  When a Statement is closed, its current 
+	 * ResultSet, if one exists, is also closed.
+	 *
+	 * @exception SQLException if a database access error occurs (why?)
+	 */
+	public void close() throws SQLException
+	{
+		result = null;
+	}
+
+	/**
+	 * The maxFieldSize limit (in bytes) is the maximum amount of
+	 * data returned for any column value; it only applies to
+	 * BINARY, VARBINARY, LONGVARBINARY, CHAR, VARCHAR and LONGVARCHAR
+	 * columns.  If the limit is exceeded, the excess data is silently
+	 * discarded.
+	 *
+	 * @return the current max column size limit; zero means unlimited
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxFieldSize() throws SQLException
+	{
+		return 8192;		// We cannot change this
+	}
+
+	/**
+	 * Sets the maxFieldSize - NOT! - We throw an SQLException just
+	 * to inform them to stop doing this.
+	 *
+	 * @param max the new max column size limit; zero means unlimited
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setMaxFieldSize(int max) throws SQLException
+	{
+		throw new SQLException("Attempt to setMaxFieldSize failed - compile time default");
+	}
+
+	/**
+	 * The maxRows limit is set to limit the number of rows that
+	 * any ResultSet can contain.  If the limit is exceeded, the
+	 * excess rows are silently dropped.
+	 *
+	 * @return the current maximum row limit; zero means unlimited
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getMaxRows() throws SQLException
+	{
+		return maxrows;
+	}
+
+	/**
+	 * Set the maximum number of rows
+	 *
+	 * @param max the new max rows limit; zero means unlimited
+	 * @exception SQLException if a database access error occurs
+	 * @see getMaxRows
+	 */
+	public void setMaxRows(int max) throws SQLException
+	{
+		maxrows = max;
+	}
+
+	/**
+	 * If escape scanning is on (the default), the driver will do escape
+	 * substitution before sending the SQL to the database.  
+	 *
+	 * @param enable true to enable; false to disable
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setEscapeProcessing(boolean enable) throws SQLException
+	{
+		escapeProcessing = enable;
+	}
+
+	/**
+	 * The queryTimeout limit is the number of seconds the driver
+	 * will wait for a Statement to execute.  If the limit is
+	 * exceeded, a SQLException is thrown.
+	 *
+	 * @return the current query timeout limit in seconds; 0 = unlimited
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getQueryTimeout() throws SQLException
+	{
+		return timeout;
+	}
+
+	/**
+	 * Sets the queryTimeout limit
+	 *
+	 * @param seconds - the new query timeout limit in seconds
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setQueryTimeout(int seconds) throws SQLException
+	{
+		timeout = seconds;
+	}
+
+	/**
+	 * Cancel can be used by one thread to cancel a statement that
+	 * is being executed by another thread.  However, PostgreSQL is
+	 * a sync. sort of thing, so this really has no meaning - we 
+	 * define it as a no-op (i.e. you can't cancel, but there is no
+	 * error if you try.)
+	 *
+	 * @exception SQLException only because thats the spec.
+	 */
+	public void cancel() throws SQLException
+	{
+		// No-op
+	}
+
+	/**
+	 * The first warning reported by calls on this Statement is
+	 * returned.  A Statement's execute methods clear its SQLWarning
+	 * chain.  Subsequent Statement warnings will be chained to this
+	 * SQLWarning.
+	 *
+	 * The Warning chain is automatically cleared each time a statement
+	 * is (re)executed.
+	 *
+	 * <B>Note:</B>  If you are processing a ResultSet then any warnings
+	 * associated with ResultSet reads will be chained on the ResultSet
+	 * object.
+	 *
+	 * @return the first SQLWarning on null
+	 * @exception SQLException if a database access error occurs
+	 */
+	public SQLWarning getWarnings() throws SQLException
+	{
+		return warnings;
+	}
+
+	/**
+	 * After this call, getWarnings returns null until a new warning
+	 * is reported for this Statement.
+	 *
+	 * @exception SQLException if a database access error occurs (why?)
+	 */
+	public void clearWarnings() throws SQLException
+	{
+		warnings = null;
+	}
+
+	/**
+	 * setCursorName defines the SQL cursor name that will be used by
+	 * subsequent execute methods.  This name can then be used in SQL
+	 * positioned update/delete statements to identify the current row
+	 * in the ResultSet generated by this statement.  If a database
+	 * doesn't support positioned update/delete, this method is a
+	 * no-op.
+	 *
+	 * <B>Note:</B> By definition, positioned update/delete execution
+	 * must be done by a different Statement than the one which
+	 * generated the ResultSet being used for positioning.  Also, cursor
+	 * names must be unique within a Connection.
+	 *
+	 * We throw an additional constriction.  There can only be one
+	 * cursor active at any one time.
+	 *
+	 * @param name the new cursor name
+	 * @exception SQLException if a database access error occurs
+	 */
+	public void setCursorName(String name) throws SQLException
+	{
+		connection.setCursorName(name);
+	}
+
+	/**
+	 * Execute a SQL statement that may return multiple results. We
+	 * don't have to worry about this since we do not support multiple
+	 * ResultSets.   You can use getResultSet or getUpdateCount to 
+	 * retrieve the result.
+	 *
+	 * @param sql any SQL statement
+	 * @return true if the next result is a ResulSet, false if it is
+	 * 	an update count or there are no more results
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean execute(String sql) throws SQLException
+	{
+		result = connection.ExecSQL(sql);
+		return (result != null && result.reallyResultSet());
+	}
+
+	/**
+	 * getResultSet returns the current result as a ResultSet.  It
+	 * should only be called once per result.
+	 *
+	 * @return the current result set; null if there are no more
+	 * @exception SQLException if a database access error occurs (why?)
+	 */
+	public java.sql.ResultSet getResultSet() throws SQLException
+	{
+		return result;
+	}
+
+	/**
+	 * getUpdateCount returns the current result as an update count,
+	 * if the result is a ResultSet or there are no more results, -1
+	 * is returned.  It should only be called once per result.
+	 *
+	 * @return the current result as an update count.
+	 * @exception SQLException if a database access error occurs
+	 */
+	public int getUpdateCount() throws SQLException
+	{
+		if (result == null) 		return -1;
+		if (result.reallyResultSet())	return -1;
+		return result.getResultCount();
+	}
+
+	/**
+	 * getMoreResults moves to a Statement's next result.  If it returns
+	 * true, this result is a ResulSet.
+	 *
+	 * @return true if the next ResultSet is valid
+	 * @exception SQLException if a database access error occurs
+	 */
+	public boolean getMoreResults() throws SQLException
+	{
+		result = result.getNext();
+		return (result != null && result.reallyResultSet());
+	}
+}