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Postgres FD Implementation
Commit 8d600a7d authored by Barry Lind's avatar Barry Lind
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Second phase of restructuring to add jdbc3 support.

parent 43515ba3
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src/interfaces/jdbc/org/postgresql/jdbc1/AbstractJdbc1Statement.java
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package org.postgresql.jdbc1; package org.postgresql.jdbc1;
import java.io.*;
import java.math.BigDecimal;
import java.sql.*; import java.sql.*;
import org.postgresql.util.PSQLException; import java.util.Vector;
import org.postgresql.largeobject.*;
import org.postgresql.util.*;
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/AbstractJdbc1Statement.java,v 1.1 2002/07/23 03:59:55 barry Exp $ /* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/AbstractJdbc1Statement.java,v 1.2 2002/07/24 22:08:39 barry Exp $
* This class defines methods of the jdbc1 specification. This class is * This class defines methods of the jdbc1 specification. This class is
* extended by org.postgresql.jdbc2.AbstractJdbc2Statement which adds the jdbc2 * extended by org.postgresql.jdbc2.AbstractJdbc2Statement which adds the jdbc2
* methods. The real Statement class (for jdbc1) is org.postgresql.jdbc1.Jdbc1Statement * methods. The real Statement class (for jdbc1) is org.postgresql.jdbc1.Jdbc1Statement
...@@ -34,6 +39,56 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme ...@@ -34,6 +39,56 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme
private static final short BACKSLASH = 2; private static final short BACKSLASH = 2;
private static final short ESC_TIMEDATE = 3; private static final short ESC_TIMEDATE = 3;
// Some performance caches
private StringBuffer sbuf = new StringBuffer();
//Used by the preparedstatement style methods
protected String sql;
protected String[] templateStrings;
protected String[] inStrings;
public AbstractJdbc1Statement (AbstractJdbc1Connection connection)
{
this.connection = connection;
}
public AbstractJdbc1Statement (AbstractJdbc1Connection connection, String sql) throws SQLException
{
this.sql = sql;
this.connection = connection;
parseSqlStmt(); // this allows Callable stmt to override
}
protected void parseSqlStmt () throws SQLException {
Vector v = new Vector();
boolean inQuotes = false;
int lastParmEnd = 0, i;
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);
}
/* /*
* Execute a SQL statement that retruns a single ResultSet * Execute a SQL statement that retruns a single ResultSet
* *
...@@ -51,6 +106,18 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme ...@@ -51,6 +106,18 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme
return result; return result;
} }
/*
* 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
{
return executeQuery(compileQuery());
}
/* /*
* Execute a SQL INSERT, UPDATE or DELETE statement. In addition * Execute a SQL INSERT, UPDATE or DELETE statement. In addition
* SQL statements that return nothing such as SQL DDL statements * SQL statements that return nothing such as SQL DDL statements
...@@ -68,6 +135,20 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme ...@@ -68,6 +135,20 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme
return this.getUpdateCount(); return this.getUpdateCount();
} }
/*
* 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
{
return executeUpdate(compileQuery());
}
/* /*
* Execute a SQL statement that may return multiple results. We * Execute a SQL statement that may return multiple results. We
* don't have to worry about this since we do not support multiple * don't have to worry about this since we do not support multiple
...@@ -101,6 +182,20 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme ...@@ -101,6 +182,20 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme
return (result != null && ((AbstractJdbc1ResultSet)result).reallyResultSet()); return (result != null && ((AbstractJdbc1ResultSet)result).reallyResultSet());
} }
/*
* 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
{
return execute(compileQuery());
}
/* /*
* setCursorName defines the SQL cursor name that will be used by * setCursorName defines the SQL cursor name that will be used by
* subsequent execute methods. This name can then be used in SQL * subsequent execute methods. This name can then be used in SQL
...@@ -466,6 +561,743 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme ...@@ -466,6 +561,743 @@ public abstract class AbstractJdbc1Statement implements org.postgresql.PGStateme
return ((AbstractJdbc1ResultSet)result).getLastOID(); return ((AbstractJdbc1ResultSet)result).getLastOID();
} }
/*
* Set a parameter to SQL NULL
*
* <p><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, Integer.toString(x));
}
/*
* 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, Integer.toString(x));
}
/*
* 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, Integer.toString(x));
}
/*
* 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, Long.toString(x));
}
/*
* 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, Float.toString(x));
}
/*
* 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, Double.toString(x));
}
/*
* 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
{
if (x == null)
setNull(parameterIndex, Types.OTHER);
else
{
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
{
// if the passed string is null, then set this column to null
if (x == null)
setNull(parameterIndex, Types.OTHER);
else
{
// use the shared buffer object. Should never clash but this makes
// us thread safe!
synchronized (sbuf)
{
sbuf.setLength(0);
int i;
sbuf.append('\'');
for (i = 0 ; i < x.length() ; ++i)
{
char c = x.charAt(i);
if (c == '\\' || c == '\'')
sbuf.append((char)'\\');
sbuf.append(c);
}
sbuf.append('\'');
set(parameterIndex, sbuf.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.
*
* <p>Implementation note:
* <br>With org.postgresql, this creates a large object, and stores the
* objects oid in this column.
*
* @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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports the bytea datatype for byte arrays
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
setString(parameterIndex, PGbytea.toPGString(x));
}
}
else
{
//Version 7.1 and earlier support done as LargeObjects
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
lob.write(x);
lob.close();
setInt(parameterIndex, oid);
}
}
/*
* 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
{
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
set(parameterIndex, "'" + x.toString() + "'");
}
}
/*
* 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
{
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
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
{
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
// Use the shared StringBuffer
synchronized (sbuf)
{
sbuf.setLength(0);
sbuf.append("'");
//format the timestamp
//we do our own formating so that we can get a format
//that works with both timestamp with time zone and
//timestamp without time zone datatypes.
//The format is '2002-01-01 23:59:59.123456-0130'
//we need to include the local time and timezone offset
//so that timestamp without time zone works correctly
int l_year = x.getYear() + 1900;
sbuf.append(l_year);
sbuf.append('-');
int l_month = x.getMonth() + 1;
if (l_month < 10) sbuf.append('0');
sbuf.append(l_month);
sbuf.append('-');
int l_day = x.getDate();
if (l_day < 10) sbuf.append('0');
sbuf.append(l_day);
sbuf.append(' ');
int l_hours = x.getHours();
if (l_hours < 10) sbuf.append('0');
sbuf.append(l_hours);
sbuf.append(':');
int l_minutes = x.getMinutes();
if (l_minutes < 10) sbuf.append('0');
sbuf.append(l_minutes);
sbuf.append(':');
int l_seconds = x.getSeconds();
if (l_seconds < 10) sbuf.append('0');
sbuf.append(l_seconds);
// Make decimal from nanos.
char[] l_decimal = {'0','0','0','0','0','0','0','0','0'};
char[] l_nanos = Integer.toString(x.getNanos()).toCharArray();
System.arraycopy(l_nanos, 0, l_decimal, l_decimal.length - l_nanos.length, l_nanos.length);
sbuf.append('.');
if (connection.haveMinimumServerVersion("7.2")) {
sbuf.append(l_decimal,0,6);
} else {
// Because 7.1 include bug that "hh:mm:59.999" becomes "hh:mm:60.00".
sbuf.append(l_decimal,0,2);
}
//add timezone offset
int l_offset = -(x.getTimezoneOffset());
int l_houros = l_offset/60;
if (l_houros >= 0) {
sbuf.append('+');
} else {
sbuf.append('-');
}
if (l_houros > -10 && l_houros < 10) sbuf.append('0');
if (l_houros >= 0) {
sbuf.append(l_houros);
} else {
sbuf.append(-l_houros);
}
int l_minos = l_offset - (l_houros *60);
if (l_minos != 0) {
if (l_minos < 10) sbuf.append('0');
sbuf.append(l_minos);
}
sbuf.append("'");
set(parameterIndex, sbuf.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.
*
* <P><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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports AsciiStream for all PG text types (char, varchar, text)
//As the spec/javadoc for this method indicate this is to be used for
//large String values (i.e. LONGVARCHAR) PG doesn't have a separate
//long varchar datatype, but with toast all text datatypes are capable of
//handling very large values. Thus the implementation ends up calling
//setString() since there is no current way to stream the value to the server
try
{
InputStreamReader l_inStream = new InputStreamReader(x, "ASCII");
char[] l_chars = new char[length];
int l_charsRead = l_inStream.read(l_chars, 0, length);
setString(parameterIndex, new String(l_chars, 0, l_charsRead));
}
catch (UnsupportedEncodingException l_uee)
{
throw new PSQLException("postgresql.unusual", l_uee);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
}
else
{
//Version 7.1 supported only LargeObjects by treating everything
//as binary data
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.
*
* <P><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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports AsciiStream for all PG text types (char, varchar, text)
//As the spec/javadoc for this method indicate this is to be used for
//large String values (i.e. LONGVARCHAR) PG doesn't have a separate
//long varchar datatype, but with toast all text datatypes are capable of
//handling very large values. Thus the implementation ends up calling
//setString() since there is no current way to stream the value to the server
try
{
InputStreamReader l_inStream = new InputStreamReader(x, "UTF-8");
char[] l_chars = new char[length];
int l_charsRead = l_inStream.read(l_chars, 0, length);
setString(parameterIndex, new String(l_chars, 0, l_charsRead));
}
catch (UnsupportedEncodingException l_uee)
{
throw new PSQLException("postgresql.unusual", l_uee);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
}
else
{
//Version 7.1 supported only LargeObjects by treating everything
//as binary data
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.
*
* <P><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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports BinaryStream for for the PG bytea type
//As the spec/javadoc for this method indicate this is to be used for
//large binary values (i.e. LONGVARBINARY) PG doesn't have a separate
//long binary datatype, but with toast the bytea datatype is capable of
//handling very large values. Thus the implementation ends up calling
//setBytes() since there is no current way to stream the value to the server
byte[] l_bytes = new byte[length];
int l_bytesRead;
try
{
l_bytesRead = x.read(l_bytes, 0, length);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
if (l_bytesRead == length)
{
setBytes(parameterIndex, l_bytes);
}
else
{
//the stream contained less data than they said
byte[] l_bytes2 = new byte[l_bytesRead];
System.arraycopy(l_bytes, 0, l_bytes2, 0, l_bytesRead);
setBytes(parameterIndex, l_bytes2);
}
}
else
{
//Version 7.1 only supported streams for LargeObjects
//but the jdbc spec indicates that streams should be
//available for LONGVARBINARY instead
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
OutputStream los = lob.getOutputStream();
try
{
// could be buffered, but then the OutputStream returned by LargeObject
// is buffered internally anyhow, so there would be no performance
// boost gained, if anything it would be worse!
int c = x.read();
int p = 0;
while (c > -1 && p < length)
{
los.write(c);
c = x.read();
p++;
}
los.close();
}
catch (IOException se)
{
throw new PSQLException("postgresql.unusual", se);
}
// lob is closed by the stream so don't call lob.close()
setInt(parameterIndex, oid);
}
}
/*
* 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.
*
* <P>The given Java object will be converted to the targetSqlType before
* being sent to the database.
*
* <P>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
{
if (x == null)
{
setNull(parameterIndex, Types.OTHER);
return;
}
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());
break;
case Types.DATE:
setDate(parameterIndex, (java.sql.Date)x);
break;
case Types.TIME:
setTime(parameterIndex, (Time)x);
break;
case Types.TIMESTAMP:
setTimestamp(parameterIndex, (Timestamp)x);
break;
case Types.BIT:
if (x instanceof Boolean)
{
set(parameterIndex, ((Boolean)x).booleanValue() ? "TRUE" : "FALSE");
}
else
{
throw new PSQLException("postgresql.prep.type");
}
break;
case Types.BINARY:
case Types.VARBINARY:
setObject(parameterIndex, x);
break;
case Types.OTHER:
setString(parameterIndex, ((PGobject)x).getValue());
break;
default:
throw new PSQLException("postgresql.prep.type");
}
}
public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException
{
setObject(parameterIndex, x, targetSqlType, 0);
}
/*
* This stores an Object into a parameter.
* <p>New for 6.4, if the object is not recognised, but it is
* Serializable, then the object is serialised using the
* org.postgresql.util.Serialize class.
*/
public void setObject(int parameterIndex, Object x) throws SQLException
{
if (x == null)
{
setNull(parameterIndex, Types.OTHER);
return;
}
if (x instanceof String)
setString(parameterIndex, (String)x);
else if (x instanceof BigDecimal)
setBigDecimal(parameterIndex, (BigDecimal)x);
else if (x instanceof Short)
setShort(parameterIndex, ((Short)x).shortValue());
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 PGobject)
setString(parameterIndex, ((PGobject)x).getValue());
else
// Try to store java object in database
setSerialize(parameterIndex, connection.storeObject(x), x.getClass().getName() );
}
/*
* Returns the SQL statement with the current template values
* substituted.
* NB: This is identical to compileQuery() except instead of throwing
* SQLException if a parameter is null, it places ? instead.
*/
public String toString()
{
synchronized (sbuf)
{
sbuf.setLength(0);
int i;
for (i = 0 ; i < inStrings.length ; ++i)
{
if (inStrings[i] == null)
sbuf.append( '?' );
else
sbuf.append (templateStrings[i]);
sbuf.append (inStrings[i]);
}
sbuf.append(templateStrings[inStrings.length]);
return sbuf.toString();
}
}
/*
* 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
*/
protected void set(int paramIndex, String s) throws SQLException
{
if (paramIndex < 1 || paramIndex > inStrings.length)
throw new PSQLException("postgresql.prep.range");
inStrings[paramIndex - 1] = s;
}
/*
* Helper - this compiles the SQL query from the various parameters
* This is identical to toString() except it throws an exception if a
* parameter is unused.
*/
protected synchronized String compileQuery()
throws SQLException
{
sbuf.setLength(0);
int i;
for (i = 0 ; i < inStrings.length ; ++i)
{
if (inStrings[i] == null)
throw new PSQLException("postgresql.prep.param", new Integer(i + 1));
sbuf.append (templateStrings[i]).append (inStrings[i]);
}
sbuf.append(templateStrings[inStrings.length]);
return sbuf.toString();
}
/*
* Set a parameter to a tablerow-type oid reference.
*
* @param parameterIndex the first parameter is 1...
* @param x the oid of the object from org.postgresql.util.Serialize.store
* @param classname the classname of the java object x
* @exception SQLException if a database access error occurs
*/
private void setSerialize(int parameterIndex, long x, String classname) throws SQLException
{
// converts . to _, toLowerCase, and ensures length<32
String tablename = Serialize.toPostgreSQL( classname );
DriverManager.println("setSerialize: setting " + x + "::" + tablename );
// OID reference to tablerow-type must be cast like: <oid>::<tablename>
// Note that postgres support for tablerow data types is incomplete/broken.
// This cannot be just a plain OID because then there would be ambiguity
// between when you want the oid itself and when you want the object
// an oid references.
set(parameterIndex, Long.toString(x) + "::" + tablename );
}
} }
src/interfaces/jdbc/org/postgresql/jdbc1/CallableStatement.java
View file @ 8d600a7d
...@@ -39,7 +39,7 @@ import java.math.*; ...@@ -39,7 +39,7 @@ import java.math.*;
* @see ResultSet * @see ResultSet
*/ */
public class CallableStatement extends PreparedStatement implements java.sql.CallableStatement public class CallableStatement extends Jdbc1PreparedStatement implements java.sql.CallableStatement
{ {
/* /*
* @exception SQLException on failure * @exception SQLException on failure
......
src/interfaces/jdbc/org/postgresql/jdbc1/Jdbc1Connection.java
View file @ 8d600a7d
...@@ -6,7 +6,7 @@ import java.sql.*; ...@@ -6,7 +6,7 @@ import java.sql.*;
import org.postgresql.Field; import org.postgresql.Field;
import org.postgresql.util.PSQLException; import org.postgresql.util.PSQLException;
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/Jdbc1Connection.java,v 1.1 2002/07/23 03:59:55 barry Exp $ /* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/Jdbc1Connection.java,v 1.2 2002/07/24 22:08:40 barry Exp $
* This class implements the java.sql.Connection interface for JDBC1. * This class implements the java.sql.Connection interface for JDBC1.
* However most of the implementation is really done in * However most of the implementation is really done in
* org.postgresql.jdbc1.AbstractJdbc1Connection * org.postgresql.jdbc1.AbstractJdbc1Connection
...@@ -21,7 +21,7 @@ public class Jdbc1Connection extends org.postgresql.jdbc1.AbstractJdbc1Connectio ...@@ -21,7 +21,7 @@ public class Jdbc1Connection extends org.postgresql.jdbc1.AbstractJdbc1Connectio
public java.sql.PreparedStatement prepareStatement(String sql) throws SQLException public java.sql.PreparedStatement prepareStatement(String sql) throws SQLException
{ {
return new org.postgresql.jdbc1.PreparedStatement(this, sql); return new org.postgresql.jdbc1.Jdbc1PreparedStatement(this, sql);
} }
//BJL TODO - merge callable statement logic from jdbc2 to jdbc1 //BJL TODO - merge callable statement logic from jdbc2 to jdbc1
......
src/interfaces/jdbc/org/postgresql/jdbc1/Jdbc1PreparedStatement.java 0 → 100644
View file @ 8d600a7d
package org.postgresql.jdbc1;
import java.sql.*;
public class Jdbc1PreparedStatement extends AbstractJdbc1Statement implements PreparedStatement
{
public Jdbc1PreparedStatement(Jdbc1Connection connection, String sql) throws SQLException
{
super(connection, sql);
}
}
src/interfaces/jdbc/org/postgresql/jdbc1/Jdbc1Statement.java
View file @ 8d600a7d
...@@ -3,7 +3,7 @@ package org.postgresql.jdbc1; ...@@ -3,7 +3,7 @@ package org.postgresql.jdbc1;
import java.sql.*; import java.sql.*;
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/Jdbc1Statement.java,v 1.1 2002/07/23 03:59:55 barry Exp $ /* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc1/Attic/Jdbc1Statement.java,v 1.2 2002/07/24 22:08:40 barry Exp $
* This class implements the java.sql.Statement interface for JDBC1. * This class implements the java.sql.Statement interface for JDBC1.
* However most of the implementation is really done in * However most of the implementation is really done in
* org.postgresql.jdbc1.AbstractJdbc1Statement * org.postgresql.jdbc1.AbstractJdbc1Statement
...@@ -13,7 +13,7 @@ public class Jdbc1Statement extends org.postgresql.jdbc1.AbstractJdbc1Statement ...@@ -13,7 +13,7 @@ public class Jdbc1Statement extends org.postgresql.jdbc1.AbstractJdbc1Statement
public Jdbc1Statement (Jdbc1Connection c) public Jdbc1Statement (Jdbc1Connection c)
{ {
connection = c; super(c);
} }
} }
src/interfaces/jdbc/org/postgresql/jdbc1/PreparedStatement.java deleted 100644 → 0
View file @ 43515ba3
package org.postgresql.jdbc1;
// IMPORTANT NOTE: This file implements the JDBC 1 version of the driver.
// If you make any modifications to this file, you must make sure that the
// changes are also made (if relevent) to the related JDBC 2 class in the
// org.postgresql.jdbc2 package.
import java.io.*;
import java.math.*;
import java.sql.*;
import java.text.*;
import java.util.*;
import org.postgresql.largeobject.*;
import org.postgresql.util.*;
/*
* 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.
*
* <p><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.
*
* <p>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 Jdbc1Statement implements java.sql.PreparedStatement
{
String sql;
String[] templateStrings;
String[] inStrings;
Jdbc1Connection connection;
// Some performance caches
private StringBuffer sbuf = new StringBuffer();
/*
* 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(Jdbc1Connection 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 PSQLException("postgresql.prep.param", new Integer(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 PSQLException("postgresql.prep.param", new Integer(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
*
* <p><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, Integer.toString(x));
}
/*
* 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, Integer.toString(x));
}
/*
* 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, Integer.toString(x));
}
/*
* 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, Long.toString(x));
}
/*
* 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, Float.toString(x));
}
/*
* 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, Double.toString(x));
}
/*
* 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
{
if (x == null)
setNull(parameterIndex, Types.OTHER);
else
{
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
{
// if the passed string is null, then set this column to null
if (x == null)
setNull(parameterIndex, Types.OTHER);
else
{
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.
*
* <p>Implementation note:
* <br>With org.postgresql, this creates a large object, and stores the
* objects oid in this column.
*
* @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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports the bytea datatype for byte arrays
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
setString(parameterIndex, PGbytea.toPGString(x));
}
}
else
{
//Version 7.1 and earlier support done as LargeObjects
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
lob.write(x);
lob.close();
setInt(parameterIndex, oid);
}
}
/*
* 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
{
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
set(parameterIndex, "'" + x.toString() + "'");
}
}
/*
* 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
{
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
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
{
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
// Use the shared StringBuffer
synchronized (sbuf)
{
sbuf.setLength(0);
sbuf.append("'");
//format the timestamp
//we do our own formating so that we can get a format
//that works with both timestamp with time zone and
//timestamp without time zone datatypes.
//The format is '2002-01-01 23:59:59.123456-0130'
//we need to include the local time and timezone offset
//so that timestamp without time zone works correctly
int l_year = x.getYear() + 1900;
sbuf.append(l_year);
sbuf.append('-');
int l_month = x.getMonth() + 1;
if (l_month < 10) sbuf.append('0');
sbuf.append(l_month);
sbuf.append('-');
int l_day = x.getDate();
if (l_day < 10) sbuf.append('0');
sbuf.append(l_day);
sbuf.append(' ');
int l_hours = x.getHours();
if (l_hours < 10) sbuf.append('0');
sbuf.append(l_hours);
sbuf.append(':');
int l_minutes = x.getMinutes();
if (l_minutes < 10) sbuf.append('0');
sbuf.append(l_minutes);
sbuf.append(':');
int l_seconds = x.getSeconds();
if (l_seconds < 10) sbuf.append('0');
sbuf.append(l_seconds);
// Make decimal from nanos.
char[] l_decimal = {'0','0','0','0','0','0','0','0','0'};
char[] l_nanos = Integer.toString(x.getNanos()).toCharArray();
System.arraycopy(l_nanos, 0, l_decimal, l_decimal.length - l_nanos.length, l_nanos.length);
sbuf.append('.');
if (connection.haveMinimumServerVersion("7.2")) {
sbuf.append(l_decimal,0,6);
} else {
// Because 7.1 include bug that "hh:mm:59.999" becomes "hh:mm:60.00".
sbuf.append(l_decimal,0,2);
}
//add timezone offset
int l_offset = -(x.getTimezoneOffset());
int l_houros = l_offset/60;
if (l_houros >= 0) {
sbuf.append('+');
} else {
sbuf.append('-');
}
if (l_houros > -10 && l_houros < 10) sbuf.append('0');
if (l_houros >= 0) {
sbuf.append(l_houros);
} else {
sbuf.append(-l_houros);
}
int l_minos = l_offset - (l_houros *60);
if (l_minos != 0) {
if (l_minos < 10) sbuf.append('0');
sbuf.append(l_minos);
}
sbuf.append("'");
set(parameterIndex, sbuf.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.
*
* <P><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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports AsciiStream for all PG text types (char, varchar, text)
//As the spec/javadoc for this method indicate this is to be used for
//large String values (i.e. LONGVARCHAR) PG doesn't have a separate
//long varchar datatype, but with toast all text datatypes are capable of
//handling very large values. Thus the implementation ends up calling
//setString() since there is no current way to stream the value to the server
try
{
InputStreamReader l_inStream = new InputStreamReader(x, "ASCII");
char[] l_chars = new char[length];
int l_charsRead = l_inStream.read(l_chars, 0, length);
setString(parameterIndex, new String(l_chars, 0, l_charsRead));
}
catch (UnsupportedEncodingException l_uee)
{
throw new PSQLException("postgresql.unusual", l_uee);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
}
else
{
//Version 7.1 supported only LargeObjects by treating everything
//as binary data
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.
*
* <P><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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports AsciiStream for all PG text types (char, varchar, text)
//As the spec/javadoc for this method indicate this is to be used for
//large String values (i.e. LONGVARCHAR) PG doesn't have a separate
//long varchar datatype, but with toast all text datatypes are capable of
//handling very large values. Thus the implementation ends up calling
//setString() since there is no current way to stream the value to the server
try
{
InputStreamReader l_inStream = new InputStreamReader(x, "UTF-8");
char[] l_chars = new char[length];
int l_charsRead = l_inStream.read(l_chars, 0, length);
setString(parameterIndex, new String(l_chars, 0, l_charsRead));
}
catch (UnsupportedEncodingException l_uee)
{
throw new PSQLException("postgresql.unusual", l_uee);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
}
else
{
//Version 7.1 supported only LargeObjects by treating everything
//as binary data
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.
*
* <P><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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports BinaryStream for for the PG bytea type
//As the spec/javadoc for this method indicate this is to be used for
//large binary values (i.e. LONGVARBINARY) PG doesn't have a separate
//long binary datatype, but with toast the bytea datatype is capable of
//handling very large values. Thus the implementation ends up calling
//setBytes() since there is no current way to stream the value to the server
byte[] l_bytes = new byte[length];
int l_bytesRead;
try
{
l_bytesRead = x.read(l_bytes, 0, length);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
if (l_bytesRead == length)
{
setBytes(parameterIndex, l_bytes);
}
else
{
//the stream contained less data than they said
byte[] l_bytes2 = new byte[l_bytesRead];
System.arraycopy(l_bytes, 0, l_bytes2, 0, l_bytesRead);
setBytes(parameterIndex, l_bytes2);
}
}
else
{
//Version 7.1 only supported streams for LargeObjects
//but the jdbc spec indicates that streams should be
//available for LONGVARBINARY instead
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
OutputStream los = lob.getOutputStream();
try
{
// could be buffered, but then the OutputStream returned by LargeObject
// is buffered internally anyhow, so there would be no performance
// boost gained, if anything it would be worse!
int c = x.read();
int p = 0;
while (c > -1 && p < length)
{
los.write(c);
c = x.read();
p++;
}
los.close();
}
catch (IOException se)
{
throw new PSQLException("postgresql.unusual", se);
}
// lob is closed by the stream so don't call lob.close()
setInt(parameterIndex, oid);
}
}
/*
* 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.
*
* <P>The given Java object will be converted to the targetSqlType before
* being sent to the database.
*
* <P>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
{
if (x == null)
{
setNull(parameterIndex, Types.OTHER);
return;
}
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());
break;
case Types.DATE:
setDate(parameterIndex, (java.sql.Date)x);
break;
case Types.TIME:
setTime(parameterIndex, (Time)x);
break;
case Types.TIMESTAMP:
setTimestamp(parameterIndex, (Timestamp)x);
break;
case Types.BIT:
if (x instanceof Boolean)
{
set(parameterIndex, ((Boolean)x).booleanValue() ? "TRUE" : "FALSE");
}
else
{
throw new PSQLException("postgresql.prep.type");
}
break;
case Types.BINARY:
case Types.VARBINARY:
setObject(parameterIndex, x);
break;
case Types.OTHER:
setString(parameterIndex, ((PGobject)x).getValue());
break;
default:
throw new PSQLException("postgresql.prep.type");
}
}
public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException
{
setObject(parameterIndex, x, targetSqlType, 0);
}
/*
* This stores an Object into a parameter.
* <p>New for 6.4, if the object is not recognised, but it is
* Serializable, then the object is serialised using the
* org.postgresql.util.Serialize class.
*/
public void setObject(int parameterIndex, Object x) throws SQLException
{
if (x == null)
{
setNull(parameterIndex, Types.OTHER);
return;
}
if (x instanceof String)
setString(parameterIndex, (String)x);
else if (x instanceof BigDecimal)
setBigDecimal(parameterIndex, (BigDecimal)x);
else if (x instanceof Short)
setShort(parameterIndex, ((Short)x).shortValue());
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 PGobject)
setString(parameterIndex, ((PGobject)x).getValue());
else
setLong(parameterIndex, connection.storeObject(x));
}
/*
* 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 PSQLException("postgresql.prep.param", new Integer(i + 1));
s.append (templateStrings[i]);
s.append (inStrings[i]);
}
s.append(templateStrings[inStrings.length]);
return super.execute(s.toString()); // in Statement class
}
/*
* Returns the SQL statement with the current template values
* substituted.
*/
public String toString()
{
StringBuffer s = new StringBuffer();
int i;
for (i = 0 ; i < inStrings.length ; ++i)
{
if (inStrings[i] == null)
s.append( '?' );
else
s.append (templateStrings[i]);
s.append (inStrings[i]);
}
s.append(templateStrings[inStrings.length]);
return s.toString();
}
// **************************************************************
// 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 PSQLException("postgresql.prep.range");
inStrings[paramIndex - 1] = s;
}
}
src/interfaces/jdbc/org/postgresql/jdbc2/AbstractJdbc2ResultSet.java
View file @ 8d600a7d
...@@ -13,14 +13,14 @@ import org.postgresql.largeobject.*; ...@@ -13,14 +13,14 @@ import org.postgresql.largeobject.*;
import org.postgresql.util.PGbytea; import org.postgresql.util.PGbytea;
import org.postgresql.util.PSQLException; import org.postgresql.util.PSQLException;
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/Attic/AbstractJdbc2ResultSet.java,v 1.1 2002/07/23 03:59:55 barry Exp $ /* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/Attic/AbstractJdbc2ResultSet.java,v 1.2 2002/07/24 22:08:42 barry Exp $
* This class defines methods of the jdbc2 specification. This class extends * This class defines methods of the jdbc2 specification. This class extends
* org.postgresql.jdbc1.AbstractJdbc1ResultSet which provides the jdbc1 * org.postgresql.jdbc1.AbstractJdbc1ResultSet which provides the jdbc1
* methods. The real Statement class (for jdbc2) is org.postgresql.jdbc2.Jdbc2ResultSet * methods. The real Statement class (for jdbc2) is org.postgresql.jdbc2.Jdbc2ResultSet
*/ */
public class AbstractJdbc2ResultSet extends org.postgresql.jdbc1.AbstractJdbc1ResultSet public class AbstractJdbc2ResultSet extends org.postgresql.jdbc1.AbstractJdbc1ResultSet
{ {
protected Jdbc2Statement statement; protected Statement statement;
protected String sqlQuery=null; protected String sqlQuery=null;
...@@ -373,7 +373,7 @@ public class AbstractJdbc2ResultSet extends org.postgresql.jdbc1.AbstractJdbc1Re ...@@ -373,7 +373,7 @@ public class AbstractJdbc2ResultSet extends org.postgresql.jdbc1.AbstractJdbc1Re
} }
// This one needs some thought, as not all ResultSets come from a statement // This one needs some thought, as not all ResultSets come from a statement
public java.sql.Statement getStatement() throws SQLException public Statement getStatement() throws SQLException
{ {
return statement; return statement;
} }
...@@ -740,7 +740,7 @@ public class AbstractJdbc2ResultSet extends org.postgresql.jdbc1.AbstractJdbc1Re ...@@ -740,7 +740,7 @@ public class AbstractJdbc2ResultSet extends org.postgresql.jdbc1.AbstractJdbc1Re
* It's used currently by getStatement() but may also with the new core * It's used currently by getStatement() but may also with the new core
* package. * package.
*/ */
public void setStatement(Jdbc2Statement statement) public void setStatement(Statement statement)
{ {
this.statement = statement; this.statement = statement;
} }
......
src/interfaces/jdbc/org/postgresql/jdbc2/AbstractJdbc2Statement.java
View file @ 8d600a7d
package org.postgresql.jdbc2; package org.postgresql.jdbc2;
import java.io.*;
import java.sql.*; import java.sql.*;
import java.util.Vector; import java.util.Vector;
import org.postgresql.largeobject.*;
import org.postgresql.util.PSQLException; import org.postgresql.util.PSQLException;
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/Attic/AbstractJdbc2Statement.java,v 1.1 2002/07/23 03:59:55 barry Exp $ /* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/Attic/AbstractJdbc2Statement.java,v 1.2 2002/07/24 22:08:42 barry Exp $
* This class defines methods of the jdbc2 specification. This class extends * This class defines methods of the jdbc2 specification. This class extends
* org.postgresql.jdbc1.AbstractJdbc1Statement which provides the jdbc1 * org.postgresql.jdbc1.AbstractJdbc1Statement which provides the jdbc1
* methods. The real Statement class (for jdbc2) is org.postgresql.jdbc2.Jdbc2Statement * methods. The real Statement class (for jdbc2) is org.postgresql.jdbc2.Jdbc2Statement
...@@ -17,6 +19,18 @@ public abstract class AbstractJdbc2Statement extends org.postgresql.jdbc1.Abstra ...@@ -17,6 +19,18 @@ public abstract class AbstractJdbc2Statement extends org.postgresql.jdbc1.Abstra
protected int resultsettype; // the resultset type to return protected int resultsettype; // the resultset type to return
protected int concurrency; // is it updateable or not? protected int concurrency; // is it updateable or not?
public AbstractJdbc2Statement (AbstractJdbc2Connection c)
{
super(c);
resultsettype = java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE;
concurrency = java.sql.ResultSet.CONCUR_READ_ONLY;
}
public AbstractJdbc2Statement(AbstractJdbc2Connection connection, String sql) throws SQLException
{
super(connection, sql);
}
/* /*
* Execute a SQL statement that may return multiple results. We * Execute a SQL statement that may return multiple results. We
* don't have to worry about this since we do not support multiple * don't have to worry about this since we do not support multiple
...@@ -31,10 +45,9 @@ public abstract class AbstractJdbc2Statement extends org.postgresql.jdbc1.Abstra ...@@ -31,10 +45,9 @@ public abstract class AbstractJdbc2Statement extends org.postgresql.jdbc1.Abstra
public boolean execute(String sql) throws SQLException public boolean execute(String sql) throws SQLException
{ {
boolean l_return = super.execute(sql); boolean l_return = super.execute(sql);
//Now do the jdbc2 specific stuff //Now do the jdbc2 specific stuff
//required for ResultSet.getStatement() to work //required for ResultSet.getStatement() to work
((AbstractJdbc2ResultSet)result).setStatement((Jdbc2Statement)this); ((AbstractJdbc2ResultSet)result).setStatement((Statement)this);
// Added this so that the Updateable resultset knows the query that gave this // Added this so that the Updateable resultset knows the query that gave this
((AbstractJdbc2ResultSet)result).setSQLQuery(sql); ((AbstractJdbc2ResultSet)result).setSQLQuery(sql);
...@@ -139,4 +152,183 @@ public abstract class AbstractJdbc2Statement extends org.postgresql.jdbc1.Abstra ...@@ -139,4 +152,183 @@ public abstract class AbstractJdbc2Statement extends org.postgresql.jdbc1.Abstra
resultsettype = value; resultsettype = value;
} }
public void addBatch() throws SQLException
{
addBatch(compileQuery());
}
public java.sql.ResultSetMetaData getMetaData() throws SQLException
{
java.sql.ResultSet rs = getResultSet();
if (rs != null)
return rs.getMetaData();
// Does anyone really know what this method does?
return null;
}
public void setArray(int i, java.sql.Array x) throws SQLException
{
setString(i, x.toString());
}
public void setBlob(int i, Blob x) throws SQLException
{
InputStream l_inStream = x.getBinaryStream();
int l_length = (int) x.length();
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
OutputStream los = lob.getOutputStream();
try
{
// could be buffered, but then the OutputStream returned by LargeObject
// is buffered internally anyhow, so there would be no performance
// boost gained, if anything it would be worse!
int c = l_inStream.read();
int p = 0;
while (c > -1 && p < l_length)
{
los.write(c);
c = l_inStream.read();
p++;
}
los.close();
}
catch (IOException se)
{
throw new PSQLException("postgresql.unusual", se);
}
// lob is closed by the stream so don't call lob.close()
setInt(i, oid);
}
public void setCharacterStream(int i, java.io.Reader x, int length) throws SQLException
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports CharacterStream for for the PG text types
//As the spec/javadoc for this method indicate this is to be used for
//large text values (i.e. LONGVARCHAR) PG doesn't have a separate
//long varchar datatype, but with toast all the text datatypes are capable of
//handling very large values. Thus the implementation ends up calling
//setString() since there is no current way to stream the value to the server
char[] l_chars = new char[length];
int l_charsRead;
try
{
l_charsRead = x.read(l_chars, 0, length);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
setString(i, new String(l_chars, 0, l_charsRead));
}
else
{
//Version 7.1 only supported streams for LargeObjects
//but the jdbc spec indicates that streams should be
//available for LONGVARCHAR instead
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
OutputStream los = lob.getOutputStream();
try
{
// could be buffered, but then the OutputStream returned by LargeObject
// is buffered internally anyhow, so there would be no performance
// boost gained, if anything it would be worse!
int c = x.read();
int p = 0;
while (c > -1 && p < length)
{
los.write(c);
c = x.read();
p++;
}
los.close();
}
catch (IOException se)
{
throw new PSQLException("postgresql.unusual", se);
}
// lob is closed by the stream so don't call lob.close()
setInt(i, oid);
}
}
public void setClob(int i, Clob x) throws SQLException
{
InputStream l_inStream = x.getAsciiStream();
int l_length = (int) x.length();
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
OutputStream los = lob.getOutputStream();
try
{
// could be buffered, but then the OutputStream returned by LargeObject
// is buffered internally anyhow, so there would be no performance
// boost gained, if anything it would be worse!
int c = l_inStream.read();
int p = 0;
while (c > -1 && p < l_length)
{
los.write(c);
c = l_inStream.read();
p++;
}
los.close();
}
catch (IOException se)
{
throw new PSQLException("postgresql.unusual", se);
}
// lob is closed by the stream so don't call lob.close()
setInt(i, oid);
}
public void setNull(int i, int t, String s) throws SQLException
{
setNull(i, t);
}
public void setRef(int i, Ref x) throws SQLException
{
throw org.postgresql.Driver.notImplemented();
}
public void setDate(int i, java.sql.Date d, java.util.Calendar cal) throws SQLException
{
if (cal == null)
setDate(i, d);
else
{
cal.setTime(d);
setDate(i, new java.sql.Date(cal.getTime().getTime()));
}
}
public void setTime(int i, Time t, java.util.Calendar cal) throws SQLException
{
if (cal == null)
setTime(i, t);
else
{
cal.setTime(t);
setTime(i, new java.sql.Time(cal.getTime().getTime()));
}
}
public void setTimestamp(int i, Timestamp t, java.util.Calendar cal) throws SQLException
{
if (cal == null)
setTimestamp(i, t);
else
{
cal.setTime(t);
setTimestamp(i, new java.sql.Timestamp(cal.getTime().getTime()));
}
}
} }
src/interfaces/jdbc/org/postgresql/jdbc2/CallableStatement.java
View file @ 8d600a7d
...@@ -40,7 +40,7 @@ import org.postgresql.util.*; ...@@ -40,7 +40,7 @@ import org.postgresql.util.*;
* @author Paul Bethe (implementer) * @author Paul Bethe (implementer)
*/ */
public class CallableStatement extends org.postgresql.jdbc2.PreparedStatement implements java.sql.CallableStatement public class CallableStatement extends org.postgresql.jdbc2.Jdbc2PreparedStatement implements java.sql.CallableStatement
{ {
/* /*
* @exception SQLException on failure * @exception SQLException on failure
......
src/interfaces/jdbc/org/postgresql/jdbc2/Jdbc2Connection.java
View file @ 8d600a7d
...@@ -5,7 +5,7 @@ import java.sql.*; ...@@ -5,7 +5,7 @@ import java.sql.*;
import java.util.Vector; import java.util.Vector;
import org.postgresql.Field; import org.postgresql.Field;
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/Attic/Jdbc2Connection.java,v 1.1 2002/07/23 03:59:55 barry Exp $ /* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/Attic/Jdbc2Connection.java,v 1.2 2002/07/24 22:08:42 barry Exp $
* This class implements the java.sql.Connection interface for JDBC2. * This class implements the java.sql.Connection interface for JDBC2.
* However most of the implementation is really done in * However most of the implementation is really done in
* org.postgresql.jdbc2.AbstractJdbc2Connection or one of it's parents * org.postgresql.jdbc2.AbstractJdbc2Connection or one of it's parents
...@@ -24,7 +24,7 @@ public class Jdbc2Connection extends org.postgresql.jdbc2.AbstractJdbc2Connectio ...@@ -24,7 +24,7 @@ public class Jdbc2Connection extends org.postgresql.jdbc2.AbstractJdbc2Connectio
public java.sql.PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException public java.sql.PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException
{ {
org.postgresql.jdbc2.PreparedStatement s = new org.postgresql.jdbc2.PreparedStatement(this, sql); Jdbc2PreparedStatement s = new Jdbc2PreparedStatement(this, sql);
s.setResultSetType(resultSetType); s.setResultSetType(resultSetType);
s.setResultSetConcurrency(resultSetConcurrency); s.setResultSetConcurrency(resultSetConcurrency);
return s; return s;
......
src/interfaces/jdbc/org/postgresql/jdbc2/Jdbc2PreparedStatement.java 0 → 100644
View file @ 8d600a7d
package org.postgresql.jdbc2;
import java.sql.*;
public class Jdbc2PreparedStatement extends AbstractJdbc2Statement implements java.sql.PreparedStatement
{
public Jdbc2PreparedStatement(Jdbc2Connection connection, String sql) throws SQLException
{
super(connection, sql);
}
}
src/interfaces/jdbc/org/postgresql/jdbc2/Jdbc2Statement.java
View file @ 8d600a7d
...@@ -3,7 +3,7 @@ package org.postgresql.jdbc2; ...@@ -3,7 +3,7 @@ package org.postgresql.jdbc2;
import java.sql.*; import java.sql.*;
/* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/Attic/Jdbc2Statement.java,v 1.1 2002/07/23 03:59:55 barry Exp $ /* $Header: /cvsroot/pgsql/src/interfaces/jdbc/org/postgresql/jdbc2/Attic/Jdbc2Statement.java,v 1.2 2002/07/24 22:08:43 barry Exp $
* This class implements the java.sql.Statement interface for JDBC2. * This class implements the java.sql.Statement interface for JDBC2.
* However most of the implementation is really done in * However most of the implementation is really done in
* org.postgresql.jdbc2.AbstractJdbc2Statement or one of it's parents * org.postgresql.jdbc2.AbstractJdbc2Statement or one of it's parents
...@@ -13,9 +13,7 @@ public class Jdbc2Statement extends org.postgresql.jdbc2.AbstractJdbc2Statement ...@@ -13,9 +13,7 @@ public class Jdbc2Statement extends org.postgresql.jdbc2.AbstractJdbc2Statement
public Jdbc2Statement (Jdbc2Connection c) public Jdbc2Statement (Jdbc2Connection c)
{ {
connection = c; super(c);
resultsettype = java.sql.ResultSet.TYPE_SCROLL_INSENSITIVE;
concurrency = java.sql.ResultSet.CONCUR_READ_ONLY;
} }
} }
src/interfaces/jdbc/org/postgresql/jdbc2/PreparedStatement.java deleted 100644 → 0
View file @ 43515ba3
package org.postgresql.jdbc2;
// IMPORTANT NOTE: This file implements the JDBC 2 version of the driver.
// If you make any modifications to this file, you must make sure that the
// changes are also made (if relevent) to the related JDBC 1 class in the
// org.postgresql.jdbc1 package.
import java.io.*;
import java.math.*;
import java.sql.*;
import java.text.*;
import java.util.*;
import org.postgresql.largeobject.*;
import org.postgresql.util.*;
/*
* 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.
*
* <p><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.
*
* <p>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 Jdbc2Statement implements java.sql.PreparedStatement
{
String sql;
String[] templateStrings;
String[] inStrings;
Jdbc2Connection connection;
// Some performance caches
private StringBuffer sbuf = new StringBuffer();
/*
* 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(Jdbc2Connection connection, String sql) throws SQLException
{
super(connection);
this.sql = sql;
this.connection = connection;
parseSqlStmt (); // this allows Callable stmt to override
}
protected void parseSqlStmt () throws SQLException {
Vector v = new Vector();
boolean inQuotes = false;
int lastParmEnd = 0, i;
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
{
return super.executeQuery(compileQuery()); // 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
{
return super.executeUpdate(compileQuery()); // in Statement class
}
/*
* Helper - this compiles the SQL query from the various parameters
* This is identical to toString() except it throws an exception if a
* parameter is unused.
*/
protected synchronized String compileQuery()
throws SQLException
{
sbuf.setLength(0);
int i;
for (i = 0 ; i < inStrings.length ; ++i)
{
if (inStrings[i] == null)
throw new PSQLException("postgresql.prep.param", new Integer(i + 1));
sbuf.append (templateStrings[i]).append (inStrings[i]);
}
sbuf.append(templateStrings[inStrings.length]);
return sbuf.toString();
}
/*
* Set a parameter to SQL NULL
*
* <p><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, Integer.toString(x));
}
/*
* 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, Integer.toString(x));
}
/*
* 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, Integer.toString(x));
}
/*
* 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, Long.toString(x));
}
/*
* 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, Float.toString(x));
}
/*
* 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, Double.toString(x));
}
/*
* 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
{
if (x == null) {
setNull(parameterIndex, Types.OTHER);
} else {
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
{
// if the passed string is null, then set this column to null
if (x == null)
setNull(parameterIndex, Types.OTHER);
else
{
// use the shared buffer object. Should never clash but this makes
// us thread safe!
synchronized (sbuf)
{
sbuf.setLength(0);
int i;
sbuf.append('\'');
for (i = 0 ; i < x.length() ; ++i)
{
char c = x.charAt(i);
if (c == '\\' || c == '\'')
sbuf.append((char)'\\');
sbuf.append(c);
}
sbuf.append('\'');
set(parameterIndex, sbuf.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.
*
* <p>Implementation note:
* <br>With org.postgresql, this creates a large object, and stores the
* objects oid in this column.
*
* @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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports the bytea datatype for byte arrays
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
setString(parameterIndex, PGbytea.toPGString(x));
}
}
else
{
//Version 7.1 and earlier support done as LargeObjects
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
lob.write(x);
lob.close();
setInt(parameterIndex, oid);
}
}
/*
* 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
{
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
set(parameterIndex, "'" + x.toString() + "'");
}
}
/*
* 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
{
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
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
{
if (null == x)
{
setNull(parameterIndex, Types.OTHER);
}
else
{
// Use the shared StringBuffer
synchronized (sbuf)
{
sbuf.setLength(0);
sbuf.append("'");
//format the timestamp
//we do our own formating so that we can get a format
//that works with both timestamp with time zone and
//timestamp without time zone datatypes.
//The format is '2002-01-01 23:59:59.123456-0130'
//we need to include the local time and timezone offset
//so that timestamp without time zone works correctly
int l_year = x.getYear() + 1900;
sbuf.append(l_year);
sbuf.append('-');
int l_month = x.getMonth() + 1;
if (l_month < 10) sbuf.append('0');
sbuf.append(l_month);
sbuf.append('-');
int l_day = x.getDate();
if (l_day < 10) sbuf.append('0');
sbuf.append(l_day);
sbuf.append(' ');
int l_hours = x.getHours();
if (l_hours < 10) sbuf.append('0');
sbuf.append(l_hours);
sbuf.append(':');
int l_minutes = x.getMinutes();
if (l_minutes < 10) sbuf.append('0');
sbuf.append(l_minutes);
sbuf.append(':');
int l_seconds = x.getSeconds();
if (l_seconds < 10) sbuf.append('0');
sbuf.append(l_seconds);
// Make decimal from nanos.
char[] l_decimal = {'0','0','0','0','0','0','0','0','0'};
char[] l_nanos = Integer.toString(x.getNanos()).toCharArray();
System.arraycopy(l_nanos, 0, l_decimal, l_decimal.length - l_nanos.length, l_nanos.length);
sbuf.append('.');
if (connection.haveMinimumServerVersion("7.2")) {
sbuf.append(l_decimal,0,6);
} else {
// Because 7.1 include bug that "hh:mm:59.999" becomes "hh:mm:60.00".
sbuf.append(l_decimal,0,2);
}
//add timezone offset
int l_offset = -(x.getTimezoneOffset());
int l_houros = l_offset/60;
if (l_houros >= 0) {
sbuf.append('+');
} else {
sbuf.append('-');
}
if (l_houros > -10 && l_houros < 10) sbuf.append('0');
if (l_houros >= 0) {
sbuf.append(l_houros);
} else {
sbuf.append(-l_houros);
}
int l_minos = l_offset - (l_houros *60);
if (l_minos != 0) {
if (l_minos < 10) sbuf.append('0');
sbuf.append(l_minos);
}
sbuf.append("'");
set(parameterIndex, sbuf.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.
*
* <P><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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports AsciiStream for all PG text types (char, varchar, text)
//As the spec/javadoc for this method indicate this is to be used for
//large String values (i.e. LONGVARCHAR) PG doesn't have a separate
//long varchar datatype, but with toast all text datatypes are capable of
//handling very large values. Thus the implementation ends up calling
//setString() since there is no current way to stream the value to the server
try
{
InputStreamReader l_inStream = new InputStreamReader(x, "ASCII");
char[] l_chars = new char[length];
int l_charsRead = l_inStream.read(l_chars, 0, length);
setString(parameterIndex, new String(l_chars, 0, l_charsRead));
}
catch (UnsupportedEncodingException l_uee)
{
throw new PSQLException("postgresql.unusual", l_uee);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
}
else
{
//Version 7.1 supported only LargeObjects by treating everything
//as binary data
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.
*
* ** DEPRECIATED IN JDBC 2 **
*
* <P><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
* @deprecated
*/
public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports AsciiStream for all PG text types (char, varchar, text)
//As the spec/javadoc for this method indicate this is to be used for
//large String values (i.e. LONGVARCHAR) PG doesn't have a separate
//long varchar datatype, but with toast all text datatypes are capable of
//handling very large values. Thus the implementation ends up calling
//setString() since there is no current way to stream the value to the server
try
{
InputStreamReader l_inStream = new InputStreamReader(x, "UTF-8");
char[] l_chars = new char[length];
int l_charsRead = l_inStream.read(l_chars, 0, length);
setString(parameterIndex, new String(l_chars, 0, l_charsRead));
}
catch (UnsupportedEncodingException l_uee)
{
throw new PSQLException("postgresql.unusual", l_uee);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
}
else
{
//Version 7.1 supported only LargeObjects by treating everything
//as binary data
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.
*
* <P><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
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports BinaryStream for for the PG bytea type
//As the spec/javadoc for this method indicate this is to be used for
//large binary values (i.e. LONGVARBINARY) PG doesn't have a separate
//long binary datatype, but with toast the bytea datatype is capable of
//handling very large values. Thus the implementation ends up calling
//setBytes() since there is no current way to stream the value to the server
byte[] l_bytes = new byte[length];
int l_bytesRead;
try
{
l_bytesRead = x.read(l_bytes, 0, length);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
if (l_bytesRead == length)
{
setBytes(parameterIndex, l_bytes);
}
else
{
//the stream contained less data than they said
byte[] l_bytes2 = new byte[l_bytesRead];
System.arraycopy(l_bytes, 0, l_bytes2, 0, l_bytesRead);
setBytes(parameterIndex, l_bytes2);
}
}
else
{
//Version 7.1 only supported streams for LargeObjects
//but the jdbc spec indicates that streams should be
//available for LONGVARBINARY instead
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
OutputStream los = lob.getOutputStream();
try
{
// could be buffered, but then the OutputStream returned by LargeObject
// is buffered internally anyhow, so there would be no performance
// boost gained, if anything it would be worse!
int c = x.read();
int p = 0;
while (c > -1 && p < length)
{
los.write(c);
c = x.read();
p++;
}
los.close();
}
catch (IOException se)
{
throw new PSQLException("postgresql.unusual", se);
}
// lob is closed by the stream so don't call lob.close()
setInt(parameterIndex, oid);
}
}
/*
* 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.
*
* <P>The given Java object will be converted to the targetSqlType before
* being sent to the database.
*
* <P>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
{
if (x == null)
{
setNull(parameterIndex, Types.OTHER);
return;
}
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());
break;
case Types.DATE:
setDate(parameterIndex, (java.sql.Date)x);
break;
case Types.TIME:
setTime(parameterIndex, (Time)x);
break;
case Types.TIMESTAMP:
setTimestamp(parameterIndex, (Timestamp)x);
break;
case Types.BIT:
if (x instanceof Boolean)
{
set(parameterIndex, ((Boolean)x).booleanValue() ? "TRUE" : "FALSE");
}
else
{
throw new PSQLException("postgresql.prep.type");
}
break;
case Types.BINARY:
case Types.VARBINARY:
setObject(parameterIndex, x);
break;
case Types.OTHER:
setString(parameterIndex, ((PGobject)x).getValue());
break;
default:
throw new PSQLException("postgresql.prep.type");
}
}
public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException
{
setObject(parameterIndex, x, targetSqlType, 0);
}
/*
* This stores an Object into a parameter.
* <p>New for 6.4, if the object is not recognised, but it is
* Serializable, then the object is serialised using the
* org.postgresql.util.Serialize class.
*/
public void setObject(int parameterIndex, Object x) throws SQLException
{
if (x == null)
{
setNull(parameterIndex, Types.OTHER);
return;
}
if (x instanceof String)
setString(parameterIndex, (String)x);
else if (x instanceof BigDecimal)
setBigDecimal(parameterIndex, (BigDecimal)x);
else if (x instanceof Short)
setShort(parameterIndex, ((Short)x).shortValue());
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 PGobject)
setString(parameterIndex, ((PGobject)x).getValue());
else
// Try to store java object in database
setSerialize(parameterIndex, connection.storeObject(x), x.getClass().getName() );
}
/*
* 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
{
return super.execute(compileQuery()); // in Statement class
}
/*
* Returns the SQL statement with the current template values
* substituted.
* NB: This is identical to compileQuery() except instead of throwing
* SQLException if a parameter is null, it places ? instead.
*/
public String toString()
{
synchronized (sbuf)
{
sbuf.setLength(0);
int i;
for (i = 0 ; i < inStrings.length ; ++i)
{
if (inStrings[i] == null)
sbuf.append( '?' );
else
sbuf.append (templateStrings[i]);
sbuf.append (inStrings[i]);
}
sbuf.append(templateStrings[inStrings.length]);
return sbuf.toString();
}
}
// **************************************************************
// 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
*/
protected void set(int paramIndex, String s) throws SQLException
{
if (paramIndex < 1 || paramIndex > inStrings.length)
throw new PSQLException("postgresql.prep.range");
inStrings[paramIndex - 1] = s;
}
/*
* Set a parameter to a tablerow-type oid reference.
*
* @param parameterIndex the first parameter is 1...
* @param x the oid of the object from org.postgresql.util.Serialize.store
* @param classname the classname of the java object x
* @exception SQLException if a database access error occurs
*/
private void setSerialize(int parameterIndex, long x, String classname) throws SQLException
{
// converts . to _, toLowerCase, and ensures length<32
String tablename = Serialize.toPostgreSQL( classname );
DriverManager.println("setSerialize: setting " + x + "::" + tablename );
// OID reference to tablerow-type must be cast like: <oid>::<tablename>
// Note that postgres support for tablerow data types is incomplete/broken.
// This cannot be just a plain OID because then there would be ambiguity
// between when you want the oid itself and when you want the object
// an oid references.
set(parameterIndex, Long.toString(x) + "::" + tablename );
}
// ** JDBC 2 Extensions **
/*
* This parses the query and adds it to the current batch
*/
public void addBatch() throws SQLException
{
super.addBatch(compileQuery());
}
/*
* Not sure what this one does, so I'm saying this returns the MetaData for
* the last ResultSet returned!
*/
public java.sql.ResultSetMetaData getMetaData() throws SQLException
{
java.sql.ResultSet rs = getResultSet();
if (rs != null)
return rs.getMetaData();
// Does anyone really know what this method does?
return null;
}
public void setArray(int i, java.sql.Array x) throws SQLException
{
setString(i, x.toString());
}
/*
* Sets a Blob
*/
public void setBlob(int i, Blob x) throws SQLException
{
InputStream l_inStream = x.getBinaryStream();
int l_length = (int) x.length();
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
OutputStream los = lob.getOutputStream();
try
{
// could be buffered, but then the OutputStream returned by LargeObject
// is buffered internally anyhow, so there would be no performance
// boost gained, if anything it would be worse!
int c = l_inStream.read();
int p = 0;
while (c > -1 && p < l_length)
{
los.write(c);
c = l_inStream.read();
p++;
}
los.close();
}
catch (IOException se)
{
throw new PSQLException("postgresql.unusual", se);
}
// lob is closed by the stream so don't call lob.close()
setInt(i, oid);
}
/*
* This is similar to setBinaryStream except it uses a Reader instead of
* InputStream.
*/
public void setCharacterStream(int i, java.io.Reader x, int length) throws SQLException
{
if (connection.haveMinimumCompatibleVersion("7.2"))
{
//Version 7.2 supports CharacterStream for for the PG text types
//As the spec/javadoc for this method indicate this is to be used for
//large text values (i.e. LONGVARCHAR) PG doesn't have a separate
//long varchar datatype, but with toast all the text datatypes are capable of
//handling very large values. Thus the implementation ends up calling
//setString() since there is no current way to stream the value to the server
char[] l_chars = new char[length];
int l_charsRead;
try
{
l_charsRead = x.read(l_chars, 0, length);
}
catch (IOException l_ioe)
{
throw new PSQLException("postgresql.unusual", l_ioe);
}
setString(i, new String(l_chars, 0, l_charsRead));
}
else
{
//Version 7.1 only supported streams for LargeObjects
//but the jdbc spec indicates that streams should be
//available for LONGVARCHAR instead
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
OutputStream los = lob.getOutputStream();
try
{
// could be buffered, but then the OutputStream returned by LargeObject
// is buffered internally anyhow, so there would be no performance
// boost gained, if anything it would be worse!
int c = x.read();
int p = 0;
while (c > -1 && p < length)
{
los.write(c);
c = x.read();
p++;
}
los.close();
}
catch (IOException se)
{
throw new PSQLException("postgresql.unusual", se);
}
// lob is closed by the stream so don't call lob.close()
setInt(i, oid);
}
}
/*
* New in 7.1
*/
public void setClob(int i, Clob x) throws SQLException
{
InputStream l_inStream = x.getAsciiStream();
int l_length = (int) x.length();
LargeObjectManager lom = connection.getLargeObjectAPI();
int oid = lom.create();
LargeObject lob = lom.open(oid);
OutputStream los = lob.getOutputStream();
try
{
// could be buffered, but then the OutputStream returned by LargeObject
// is buffered internally anyhow, so there would be no performance
// boost gained, if anything it would be worse!
int c = l_inStream.read();
int p = 0;
while (c > -1 && p < l_length)
{
los.write(c);
c = l_inStream.read();
p++;
}
los.close();
}
catch (IOException se)
{
throw new PSQLException("postgresql.unusual", se);
}
// lob is closed by the stream so don't call lob.close()
setInt(i, oid);
}
/*
* At least this works as in PostgreSQL null represents anything null ;-)
*
* New in 7,1
*/
public void setNull(int i, int t, String s) throws SQLException
{
setNull(i, t);
}
public void setRef(int i, Ref x) throws SQLException
{
throw org.postgresql.Driver.notImplemented();
}
/*
* New in 7,1
*/
public void setDate(int i, java.sql.Date d, java.util.Calendar cal) throws SQLException
{
if (cal == null)
setDate(i, d);
else
{
cal.setTime(d);
setDate(i, new java.sql.Date(cal.getTime().getTime()));
}
}
/*
* New in 7,1
*/
public void setTime(int i, Time t, java.util.Calendar cal) throws SQLException
{
if (cal == null)
setTime(i, t);
else
{
cal.setTime(t);
setTime(i, new java.sql.Time(cal.getTime().getTime()));
}
}
/*
* New in 7,1
*/
public void setTimestamp(int i, Timestamp t, java.util.Calendar cal) throws SQLException
{
if (cal == null)
setTimestamp(i, t);
else
{
cal.setTime(t);
setTimestamp(i, new java.sql.Timestamp(cal.getTime().getTime()));
}
}
}
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