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Postgres FD Implementation
Commit 2d9ee0fc authored by Peter Eisentraut's avatar Peter Eisentraut
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Bring DatabaseMetaData feature tests up to date: 

* NULLs are sorted differently in 7.2
* table correlation names are supported
* GROUP BY, ORDER BY unrelated is supported since 6.4
* ESCAPE/LIKE only supported since 7.1
* outer joins only since 7.1
* preferred term for procedure is "function"
* preferred term for catalog is "database"
* supports SELECT for UPDATE since 6.5
* supports subqueries
* supports UNION; supports UNION ALL since 7.1
* update some of the max lengths to match reality
* rearrange some functions to match the order in the spec
  for easier maintenance
parent ea88062c
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Showing with 338 additions and 231 deletions
src/interfaces/jdbc/org/postgresql/jdbc1/DatabaseMetaData.java
View file @ 2d9ee0fc
...@@ -46,6 +46,16 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -46,6 +46,16 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
// This is a default value for remarks // This is a default value for remarks
private static final byte defaultRemarks[]="no remarks".getBytes(); private static final byte defaultRemarks[]="no remarks".getBytes();
private boolean haveMinimumServerVersion(String ver) throws SQLException
{
if (getDatabaseProductVersion().compareTo(ver)>=0)
return true;
else
return false;
}
public DatabaseMetaData(Connection conn) public DatabaseMetaData(Connection conn)
{ {
this.connection = conn; this.connection = conn;
...@@ -116,7 +126,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -116,7 +126,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean nullsAreSortedHigh() throws SQLException public boolean nullsAreSortedHigh() throws SQLException
{ {
return false; return haveMinimumServerVersion("7.2");
} }
/** /**
...@@ -149,7 +159,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -149,7 +159,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean nullsAreSortedAtEnd() throws SQLException public boolean nullsAreSortedAtEnd() throws SQLException
{ {
return true; return ! haveMinimumServerVersion("7.2");
} }
/** /**
...@@ -305,10 +315,6 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -305,10 +315,6 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
* case sensitive and as a result store them in mixed case? A * case sensitive and as a result store them in mixed case? A
* JDBC compliant driver will always return true. * JDBC compliant driver will always return true.
* *
* <p>Predicament - what do they mean by "SQL identifiers" - if it
* means the names of the tables and columns, then the answers
* given below are correct - otherwise I don't know.
*
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
...@@ -355,9 +361,6 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -355,9 +361,6 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
* a space if identifier quoting isn't supported. A JDBC Compliant * a space if identifier quoting isn't supported. A JDBC Compliant
* driver will always use a double quote character. * driver will always use a double quote character.
* *
* <p>If an SQL identifier is a table name, column name, etc. then
* we do not support it.
*
* @return the quoting string * @return the quoting string
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
...@@ -510,15 +513,27 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -510,15 +513,27 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
return false; return false;
} }
/**
* Are table correlation names supported? A JDBC Compliant
* driver always returns true.
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsTableCorrelationNames() throws SQLException public boolean supportsTableCorrelationNames() throws SQLException
{ {
// XXX-Not Implemented return true;
return false;
} }
/**
* If table correlation names are supported, are they restricted to
* be different from the names of the tables?
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsDifferentTableCorrelationNames() throws SQLException public boolean supportsDifferentTableCorrelationNames() throws SQLException
{ {
// XXX-Not Implemented
return false; return false;
} }
...@@ -537,14 +552,13 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -537,14 +552,13 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* Can an "ORDER BY" clause use columns not in the SELECT? * Can an "ORDER BY" clause use columns not in the SELECT?
* I checked it, and you can't.
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsOrderByUnrelated() throws SQLException public boolean supportsOrderByUnrelated() throws SQLException
{ {
return false; return haveMinimumServerVersion("6.4");
} }
/** /**
...@@ -561,14 +575,13 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -561,14 +575,13 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* Can a "GROUP BY" clause use columns not in the SELECT? * Can a "GROUP BY" clause use columns not in the SELECT?
* I checked it - it seems to allow it
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsGroupByUnrelated() throws SQLException public boolean supportsGroupByUnrelated() throws SQLException
{ {
return true; return haveMinimumServerVersion("6.4");
} }
/** /**
...@@ -576,12 +589,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -576,12 +589,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
* it specifies all the columns in the SELECT? Does anyone actually * it specifies all the columns in the SELECT? Does anyone actually
* understand what they mean here? * understand what they mean here?
* *
* (I think this is a subset of the previous function. -- petere)
*
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsGroupByBeyondSelect() throws SQLException public boolean supportsGroupByBeyondSelect() throws SQLException
{ {
return true; // For now... return supportsGroupByUnrelated();
} }
/** /**
...@@ -593,7 +608,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -593,7 +608,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean supportsLikeEscapeClause() throws SQLException public boolean supportsLikeEscapeClause() throws SQLException
{ {
return true; return haveMinimumServerVersion("7.1");
} }
/** /**
...@@ -681,8 +696,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -681,8 +696,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* Does this driver support the ANSI-92 entry level SQL grammar? * Does this driver support the ANSI-92 entry level SQL grammar?
* All JDBC Compliant drivers must return true. I think we have * All JDBC Compliant drivers must return true.
* to support outer joins for this to be true.
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
...@@ -694,8 +708,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -694,8 +708,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* Does this driver support the ANSI-92 intermediate level SQL * Does this driver support the ANSI-92 intermediate level SQL
* grammar? Anyone who does not support Entry level cannot support * grammar?
* Intermediate level.
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
...@@ -736,7 +749,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -736,7 +749,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean supportsOuterJoins() throws SQLException public boolean supportsOuterJoins() throws SQLException
{ {
return true; // yes 7.1 does return haveMinimumServerVersion("7.1");
} }
/** /**
...@@ -748,7 +761,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -748,7 +761,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean supportsFullOuterJoins() throws SQLException public boolean supportsFullOuterJoins() throws SQLException
{ {
return true; // yes in 7.1 return haveMinimumServerVersion("7.1");
} }
/** /**
...@@ -760,44 +773,43 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -760,44 +773,43 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean supportsLimitedOuterJoins() throws SQLException public boolean supportsLimitedOuterJoins() throws SQLException
{ {
return true; // yes in 7.1 return supportsFullOuterJoins();
} }
/** /**
* What is the database vendor's preferred term for "schema" - well, * What is the database vendor's preferred term for "schema"?
* we do not provide support for schemas, so lets just use that * PostgreSQL doesn't have schemas, but when it does, we'll use the
* term. * term "schema".
* *
* @return the vendor term * @return the vendor term
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public String getSchemaTerm() throws SQLException public String getSchemaTerm() throws SQLException
{ {
return "Schema"; return "schema";
} }
/** /**
* What is the database vendor's preferred term for "procedure" - * What is the database vendor's preferred term for "procedure"?
* I kind of like "Procedure" myself. * Traditionally, "function" has been used.
* *
* @return the vendor term * @return the vendor term
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public String getProcedureTerm() throws SQLException public String getProcedureTerm() throws SQLException
{ {
return "Procedure"; return "function";
} }
/** /**
* What is the database vendor's preferred term for "catalog"? - * What is the database vendor's preferred term for "catalog"?
* we dont have a preferred term, so just use Catalog
* *
* @return the vendor term * @return the vendor term
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public String getCatalogTerm() throws SQLException public String getCatalogTerm() throws SQLException
{ {
return "Catalog"; return "database";
} }
/** /**
...@@ -809,21 +821,18 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -809,21 +821,18 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean isCatalogAtStart() throws SQLException public boolean isCatalogAtStart() throws SQLException
{ {
return false; throw org.postgresql.Driver.notImplemented();
} }
/** /**
* What is the Catalog separator. Hmmm....well, I kind of like * What is the Catalog separator.
* a period (so we get catalog.table definitions). - I don't think
* PostgreSQL supports catalogs anyhow, so it makes no difference.
* *
* @return the catalog separator string * @return the catalog separator string
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public String getCatalogSeparator() throws SQLException public String getCatalogSeparator() throws SQLException
{ {
// PM Sep 29 97 - changed from "." as we don't support catalogs. throw org.postgresql.Driver.notImplemented();
return "";
} }
/** /**
...@@ -959,68 +968,114 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -959,68 +968,114 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
return false; // For now... return false; // For now...
} }
/**
* Is SELECT for UPDATE supported?
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsSelectForUpdate() throws SQLException public boolean supportsSelectForUpdate() throws SQLException
{ {
// XXX-Not Implemented return haveMinimumServerVersion("6.5");
return false;
} }
/**
* Are stored procedure calls using the stored procedure escape
* syntax supported?
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsStoredProcedures() throws SQLException public boolean supportsStoredProcedures() throws SQLException
{ {
// XXX-Not Implemented
return false; return false;
} }
/**
* Are subqueries in comparison expressions supported? A JDBC
* Compliant driver always returns true.
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsSubqueriesInComparisons() throws SQLException public boolean supportsSubqueriesInComparisons() throws SQLException
{ {
// XXX-Not Implemented return true;
return false;
} }
/**
* Are subqueries in 'exists' expressions supported? A JDBC
* Compliant driver always returns true.
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsSubqueriesInExists() throws SQLException public boolean supportsSubqueriesInExists() throws SQLException
{ {
// XXX-Not Implemented return true;
return false;
} }
/**
* Are subqueries in 'in' statements supported? A JDBC
* Compliant driver always returns true.
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsSubqueriesInIns() throws SQLException public boolean supportsSubqueriesInIns() throws SQLException
{ {
// XXX-Not Implemented return true;
return false;
} }
/**
* Are subqueries in quantified expressions supported? A JDBC
* Compliant driver always returns true.
*
* (No idea what this is, but we support a good deal of
* subquerying.)
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsSubqueriesInQuantifieds() throws SQLException public boolean supportsSubqueriesInQuantifieds() throws SQLException
{ {
// XXX-Not Implemented return true;
return false;
} }
/**
* Are correlated subqueries supported? A JDBC Compliant driver
* always returns true.
*
* (a.k.a. subselect in from?)
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsCorrelatedSubqueries() throws SQLException public boolean supportsCorrelatedSubqueries() throws SQLException
{ {
// XXX-Not Implemented return haveMinimumServerVersion("7.1");
return false;
} }
/** /**
* Is SQL UNION supported? Nope. * Is SQL UNION supported?
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsUnion() throws SQLException public boolean supportsUnion() throws SQLException
{ {
return true; // 7.0? return true; // since 6.3
} }
/** /**
* Is SQL UNION ALL supported? Nope. * Is SQL UNION ALL supported?
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsUnionAll() throws SQLException public boolean supportsUnionAll() throws SQLException
{ {
return false; return haveMinimumServerVersion("7.1");
} }
/** /**
...@@ -1081,7 +1136,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1081,7 +1136,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public int getMaxBinaryLiteralLength() throws SQLException public int getMaxBinaryLiteralLength() throws SQLException
{ {
return 0; // For now... return 0; // no limit
} }
/** /**
...@@ -1093,7 +1148,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1093,7 +1148,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public int getMaxCharLiteralLength() throws SQLException public int getMaxCharLiteralLength() throws SQLException
{ {
return 65535; return 0; // no limit
} }
/** /**
...@@ -1117,7 +1172,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1117,7 +1172,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public int getMaxColumnsInGroupBy() throws SQLException public int getMaxColumnsInGroupBy() throws SQLException
{ {
return getMaxColumnsInTable(); return 0; // no limit
} }
/** /**
...@@ -1135,26 +1190,24 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1135,26 +1190,24 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* What's the maximum number of columns in an "ORDER BY clause? * What's the maximum number of columns in an "ORDER BY clause?
* Theoretically, all of them!
* *
* @return the max columns * @return the max columns
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public int getMaxColumnsInOrderBy() throws SQLException public int getMaxColumnsInOrderBy() throws SQLException
{ {
return getMaxColumnsInTable(); return 0; // no limit
} }
/** /**
* What is the maximum number of columns in a "SELECT" list? * What is the maximum number of columns in a "SELECT" list?
* Theoretically, all of them!
* *
* @return the max columns * @return the max columns
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public int getMaxColumnsInSelect() throws SQLException public int getMaxColumnsInSelect() throws SQLException
{ {
return getMaxColumnsInTable(); return 0; // no limit
} }
/** /**
...@@ -1204,20 +1257,17 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1204,20 +1257,17 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
} }
/** /**
* What is the maximum length of an index (in bytes)? Now, does * Retrieves the maximum number of bytes for an index, including all
* the spec. mean name of an index (in which case its 32, the * of the parts of the index.
* same as a table) or does it mean length of an index element
* (in which case its 8192, the size of a row) or does it mean
* the number of rows it can access (in which case it 2^32 -
* a 4 byte OID number)? I think its the length of an index
* element, personally, so Im setting it to 65535.
* *
* @return max index length in bytes * @return max index length in bytes, which includes the composite
* of all the constituent parts of the index; a result of zero means
* that there is no limit or the limit is not known
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public int getMaxIndexLength() throws SQLException public int getMaxIndexLength() throws SQLException
{ {
return 65535; return 0; // no limit (larger than an int anyway)
} }
public int getMaxSchemaNameLength() throws SQLException public int getMaxSchemaNameLength() throws SQLException
...@@ -1246,15 +1296,17 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1246,15 +1296,17 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
} }
/** /**
* What is the maximum length of a single row? (not including * What is the maximum length of a single row?
* blobs). 65535 is defined in PostgreSQL.
* *
* @return max row size in bytes * @return max row size in bytes
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public int getMaxRowSize() throws SQLException public int getMaxRowSize() throws SQLException
{ {
return 65535; if (haveMinimumServerVersion("7.1"))
return 1073741824; // 1 GB
else
return 8192; // XXX could be altered
} }
/** /**
...@@ -1277,7 +1329,10 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1277,7 +1329,10 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public int getMaxStatementLength() throws SQLException public int getMaxStatementLength() throws SQLException
{ {
return 65535; if (haveMinimumServerVersion("7.0"))
return 0; // actually whatever fits in size_t
else
return 16384;
} }
/** /**
...@@ -1310,19 +1365,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1310,19 +1365,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* What is the maximum number of tables that can be specified * What is the maximum number of tables that can be specified
* in a SELECT? Theoretically, this is the same number as the * in a SELECT?
* number of tables allowable. In practice tho, it is much smaller
* since the number of tables is limited by the statement, we
* return 1024 here - this is just a number I came up with (being
* the number of tables roughly of three characters each that you
* can fit inside a 65535 character buffer with comma separators).
* *
* @return the maximum * @return the maximum
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public int getMaxTablesInSelect() throws SQLException public int getMaxTablesInSelect() throws SQLException
{ {
return 1024; return 0; // no limit
} }
/** /**
...@@ -1386,15 +1436,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1386,15 +1436,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* Are both data definition and data manipulation transactions * Are both data definition and data manipulation transactions
* supported? I checked it, and could not do a CREATE TABLE * supported?
* within a transaction, so I am assuming that we don't
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException
{ {
return false; return true;
} }
/** /**
...@@ -1406,7 +1455,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1406,7 +1455,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean supportsDataManipulationTransactionsOnly() throws SQLException public boolean supportsDataManipulationTransactionsOnly() throws SQLException
{ {
return true; return false;
} }
/** /**
......
src/interfaces/jdbc/org/postgresql/jdbc2/DatabaseMetaData.java
View file @ 2d9ee0fc
...@@ -46,6 +46,16 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -46,6 +46,16 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
// This is a default value for remarks // This is a default value for remarks
private static final byte defaultRemarks[]="no remarks".getBytes(); private static final byte defaultRemarks[]="no remarks".getBytes();
private boolean haveMinimumServerVersion(String ver) throws SQLException
{
if (getDatabaseProductVersion().compareTo(ver)>=0)
return true;
else
return false;
}
public DatabaseMetaData(Connection conn) public DatabaseMetaData(Connection conn)
{ {
this.connection = conn; this.connection = conn;
...@@ -116,7 +126,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -116,7 +126,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean nullsAreSortedHigh() throws SQLException public boolean nullsAreSortedHigh() throws SQLException
{ {
return false; return haveMinimumServerVersion("7.2");
} }
/** /**
...@@ -149,7 +159,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -149,7 +159,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean nullsAreSortedAtEnd() throws SQLException public boolean nullsAreSortedAtEnd() throws SQLException
{ {
return true; return ! haveMinimumServerVersion("7.2");
} }
/** /**
...@@ -305,10 +315,6 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -305,10 +315,6 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
* case sensitive and as a result store them in mixed case? A * case sensitive and as a result store them in mixed case? A
* JDBC compliant driver will always return true. * JDBC compliant driver will always return true.
* *
* <p>Predicament - what do they mean by "SQL identifiers" - if it
* means the names of the tables and columns, then the answers
* given below are correct - otherwise I don't know.
*
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
...@@ -355,9 +361,6 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -355,9 +361,6 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
* a space if identifier quoting isn't supported. A JDBC Compliant * a space if identifier quoting isn't supported. A JDBC Compliant
* driver will always use a double quote character. * driver will always use a double quote character.
* *
* <p>If an SQL identifier is a table name, column name, etc. then
* we do not support it.
*
* @return the quoting string * @return the quoting string
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
...@@ -510,15 +513,27 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -510,15 +513,27 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
return false; return false;
} }
/**
* Are table correlation names supported? A JDBC Compliant
* driver always returns true.
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsTableCorrelationNames() throws SQLException public boolean supportsTableCorrelationNames() throws SQLException
{ {
// XXX-Not Implemented return true;
return false;
} }
/**
* If table correlation names are supported, are they restricted to
* be different from the names of the tables?
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsDifferentTableCorrelationNames() throws SQLException public boolean supportsDifferentTableCorrelationNames() throws SQLException
{ {
// XXX-Not Implemented
return false; return false;
} }
...@@ -537,14 +552,13 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -537,14 +552,13 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* Can an "ORDER BY" clause use columns not in the SELECT? * Can an "ORDER BY" clause use columns not in the SELECT?
* I checked it, and you can't.
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsOrderByUnrelated() throws SQLException public boolean supportsOrderByUnrelated() throws SQLException
{ {
return false; return haveMinimumServerVersion("6.4");
} }
/** /**
...@@ -561,14 +575,13 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -561,14 +575,13 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* Can a "GROUP BY" clause use columns not in the SELECT? * Can a "GROUP BY" clause use columns not in the SELECT?
* I checked it - it seems to allow it
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsGroupByUnrelated() throws SQLException public boolean supportsGroupByUnrelated() throws SQLException
{ {
return true; return haveMinimumServerVersion("6.4");
} }
/** /**
...@@ -576,12 +589,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -576,12 +589,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
* it specifies all the columns in the SELECT? Does anyone actually * it specifies all the columns in the SELECT? Does anyone actually
* understand what they mean here? * understand what they mean here?
* *
* (I think this is a subset of the previous function. -- petere)
*
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsGroupByBeyondSelect() throws SQLException public boolean supportsGroupByBeyondSelect() throws SQLException
{ {
return true; // For now... return supportsGroupByUnrelated();
} }
/** /**
...@@ -593,7 +608,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -593,7 +608,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean supportsLikeEscapeClause() throws SQLException public boolean supportsLikeEscapeClause() throws SQLException
{ {
return true; return haveMinimumServerVersion("7.1");
} }
/** /**
...@@ -681,8 +696,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -681,8 +696,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* Does this driver support the ANSI-92 entry level SQL grammar? * Does this driver support the ANSI-92 entry level SQL grammar?
* All JDBC Compliant drivers must return true. I think we have * All JDBC Compliant drivers must return true.
* to support outer joins for this to be true.
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
...@@ -694,8 +708,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -694,8 +708,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* Does this driver support the ANSI-92 intermediate level SQL * Does this driver support the ANSI-92 intermediate level SQL
* grammar? Anyone who does not support Entry level cannot support * grammar?
* Intermediate level.
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
...@@ -736,7 +749,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -736,7 +749,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean supportsOuterJoins() throws SQLException public boolean supportsOuterJoins() throws SQLException
{ {
return true; // yes 7.1 does return haveMinimumServerVersion("7.1");
} }
/** /**
...@@ -748,7 +761,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -748,7 +761,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean supportsFullOuterJoins() throws SQLException public boolean supportsFullOuterJoins() throws SQLException
{ {
return true; // yes in 7.1 return haveMinimumServerVersion("7.1");
} }
/** /**
...@@ -760,44 +773,43 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -760,44 +773,43 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean supportsLimitedOuterJoins() throws SQLException public boolean supportsLimitedOuterJoins() throws SQLException
{ {
return true; // yes in 7.1 return supportsFullOuterJoins();
} }
/** /**
* What is the database vendor's preferred term for "schema" - well, * What is the database vendor's preferred term for "schema"?
* we do not provide support for schemas, so lets just use that * PostgreSQL doesn't have schemas, but when it does, we'll use the
* term. * term "schema".
* *
* @return the vendor term * @return the vendor term
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public String getSchemaTerm() throws SQLException public String getSchemaTerm() throws SQLException
{ {
return "Schema"; return "schema";
} }
/** /**
* What is the database vendor's preferred term for "procedure" - * What is the database vendor's preferred term for "procedure"?
* I kind of like "Procedure" myself. * Traditionally, "function" has been used.
* *
* @return the vendor term * @return the vendor term
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public String getProcedureTerm() throws SQLException public String getProcedureTerm() throws SQLException
{ {
return "Procedure"; return "function";
} }
/** /**
* What is the database vendor's preferred term for "catalog"? - * What is the database vendor's preferred term for "catalog"?
* we dont have a preferred term, so just use Catalog
* *
* @return the vendor term * @return the vendor term
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public String getCatalogTerm() throws SQLException public String getCatalogTerm() throws SQLException
{ {
return "Catalog"; return "database";
} }
/** /**
...@@ -809,21 +821,18 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -809,21 +821,18 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean isCatalogAtStart() throws SQLException public boolean isCatalogAtStart() throws SQLException
{ {
return false; throw org.postgresql.Driver.notImplemented();
} }
/** /**
* What is the Catalog separator. Hmmm....well, I kind of like * What is the Catalog separator.
* a period (so we get catalog.table definitions). - I don't think
* PostgreSQL supports catalogs anyhow, so it makes no difference.
* *
* @return the catalog separator string * @return the catalog separator string
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public String getCatalogSeparator() throws SQLException public String getCatalogSeparator() throws SQLException
{ {
// PM Sep 29 97 - changed from "." as we don't support catalogs. throw org.postgresql.Driver.notImplemented();
return "";
} }
/** /**
...@@ -959,68 +968,114 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -959,68 +968,114 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
return false; // For now... return false; // For now...
} }
/**
* Is SELECT for UPDATE supported?
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsSelectForUpdate() throws SQLException public boolean supportsSelectForUpdate() throws SQLException
{ {
// XXX-Not Implemented return haveMinimumServerVersion("6.5");
return false;
} }
/**
* Are stored procedure calls using the stored procedure escape
* syntax supported?
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsStoredProcedures() throws SQLException public boolean supportsStoredProcedures() throws SQLException
{ {
// XXX-Not Implemented
return false; return false;
} }
/**
* Are subqueries in comparison expressions supported? A JDBC
* Compliant driver always returns true.
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsSubqueriesInComparisons() throws SQLException public boolean supportsSubqueriesInComparisons() throws SQLException
{ {
// XXX-Not Implemented return true;
return false;
} }
/**
* Are subqueries in 'exists' expressions supported? A JDBC
* Compliant driver always returns true.
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsSubqueriesInExists() throws SQLException public boolean supportsSubqueriesInExists() throws SQLException
{ {
// XXX-Not Implemented return true;
return false;
} }
/**
* Are subqueries in 'in' statements supported? A JDBC
* Compliant driver always returns true.
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsSubqueriesInIns() throws SQLException public boolean supportsSubqueriesInIns() throws SQLException
{ {
// XXX-Not Implemented return true;
return false;
} }
/**
* Are subqueries in quantified expressions supported? A JDBC
* Compliant driver always returns true.
*
* (No idea what this is, but we support a good deal of
* subquerying.)
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsSubqueriesInQuantifieds() throws SQLException public boolean supportsSubqueriesInQuantifieds() throws SQLException
{ {
// XXX-Not Implemented return true;
return false;
} }
/**
* Are correlated subqueries supported? A JDBC Compliant driver
* always returns true.
*
* (a.k.a. subselect in from?)
*
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/
public boolean supportsCorrelatedSubqueries() throws SQLException public boolean supportsCorrelatedSubqueries() throws SQLException
{ {
// XXX-Not Implemented return haveMinimumServerVersion("7.1");
return false;
} }
/** /**
* Is SQL UNION supported? Nope. * Is SQL UNION supported?
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsUnion() throws SQLException public boolean supportsUnion() throws SQLException
{ {
return true; // 7.0? return true; // since 6.3
} }
/** /**
* Is SQL UNION ALL supported? Nope. * Is SQL UNION ALL supported?
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsUnionAll() throws SQLException public boolean supportsUnionAll() throws SQLException
{ {
return false; return haveMinimumServerVersion("7.1");
} }
/** /**
...@@ -1081,7 +1136,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1081,7 +1136,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public int getMaxBinaryLiteralLength() throws SQLException public int getMaxBinaryLiteralLength() throws SQLException
{ {
return 0; // For now... return 0; // no limit
} }
/** /**
...@@ -1093,7 +1148,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1093,7 +1148,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public int getMaxCharLiteralLength() throws SQLException public int getMaxCharLiteralLength() throws SQLException
{ {
return 65535; return 0; // no limit
} }
/** /**
...@@ -1117,7 +1172,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1117,7 +1172,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public int getMaxColumnsInGroupBy() throws SQLException public int getMaxColumnsInGroupBy() throws SQLException
{ {
return getMaxColumnsInTable(); return 0; // no limit
} }
/** /**
...@@ -1135,26 +1190,24 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1135,26 +1190,24 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* What's the maximum number of columns in an "ORDER BY clause? * What's the maximum number of columns in an "ORDER BY clause?
* Theoretically, all of them!
* *
* @return the max columns * @return the max columns
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public int getMaxColumnsInOrderBy() throws SQLException public int getMaxColumnsInOrderBy() throws SQLException
{ {
return getMaxColumnsInTable(); return 0; // no limit
} }
/** /**
* What is the maximum number of columns in a "SELECT" list? * What is the maximum number of columns in a "SELECT" list?
* Theoretically, all of them!
* *
* @return the max columns * @return the max columns
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public int getMaxColumnsInSelect() throws SQLException public int getMaxColumnsInSelect() throws SQLException
{ {
return getMaxColumnsInTable(); return 0; // no limit
} }
/** /**
...@@ -1204,20 +1257,17 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1204,20 +1257,17 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
} }
/** /**
* What is the maximum length of an index (in bytes)? Now, does * Retrieves the maximum number of bytes for an index, including all
* the spec. mean name of an index (in which case its 32, the * of the parts of the index.
* same as a table) or does it mean length of an index element
* (in which case its 8192, the size of a row) or does it mean
* the number of rows it can access (in which case it 2^32 -
* a 4 byte OID number)? I think its the length of an index
* element, personally, so Im setting it to 8192.
* *
* @return max index length in bytes * @return max index length in bytes, which includes the composite
* of all the constituent parts of the index; a result of zero means
* that there is no limit or the limit is not known
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public int getMaxIndexLength() throws SQLException public int getMaxIndexLength() throws SQLException
{ {
return 65535; return 0; // no limit (larger than an int anyway)
} }
public int getMaxSchemaNameLength() throws SQLException public int getMaxSchemaNameLength() throws SQLException
...@@ -1246,15 +1296,17 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1246,15 +1296,17 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
} }
/** /**
* What is the maximum length of a single row? (not including * What is the maximum length of a single row?
* blobs). 65535 is defined in PostgreSQL.
* *
* @return max row size in bytes * @return max row size in bytes
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public int getMaxRowSize() throws SQLException public int getMaxRowSize() throws SQLException
{ {
return 65535; if (haveMinimumServerVersion("7.1"))
return 1073741824; // 1 GB
else
return 8192; // XXX could be altered
} }
/** /**
...@@ -1277,7 +1329,10 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1277,7 +1329,10 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public int getMaxStatementLength() throws SQLException public int getMaxStatementLength() throws SQLException
{ {
return 65535; if (haveMinimumServerVersion("7.0"))
return 0; // actually whatever fits in size_t
else
return 16384;
} }
/** /**
...@@ -1310,19 +1365,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1310,19 +1365,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* What is the maximum number of tables that can be specified * What is the maximum number of tables that can be specified
* in a SELECT? Theoretically, this is the same number as the * in a SELECT?
* number of tables allowable. In practice tho, it is much smaller
* since the number of tables is limited by the statement, we
* return 1024 here - this is just a number I came up with (being
* the number of tables roughly of three characters each that you
* can fit inside a 8192 character buffer with comma separators).
* *
* @return the maximum * @return the maximum
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public int getMaxTablesInSelect() throws SQLException public int getMaxTablesInSelect() throws SQLException
{ {
return 1024; return 0; // no limit
} }
/** /**
...@@ -1386,15 +1436,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1386,15 +1436,14 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
/** /**
* Are both data definition and data manipulation transactions * Are both data definition and data manipulation transactions
* supported? I checked it, and could not do a CREATE TABLE * supported?
* within a transaction, so I am assuming that we don't
* *
* @return true if so * @return true if so
* @exception SQLException if a database access error occurs * @exception SQLException if a database access error occurs
*/ */
public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException
{ {
return false; return true;
} }
/** /**
...@@ -1406,7 +1455,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -1406,7 +1455,7 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
*/ */
public boolean supportsDataManipulationTransactionsOnly() throws SQLException public boolean supportsDataManipulationTransactionsOnly() throws SQLException
{ {
return true; return false;
} }
/** /**
...@@ -2699,91 +2748,89 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -2699,91 +2748,89 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
return new ResultSet(connection, f, v, "OK", 1); return new ResultSet(connection, f, v, "OK", 1);
} }
// ** JDBC 2 Extensions ** // ** JDBC 2 Extensions **
/** /**
* New in 7.1 - we don't support deletes so this must be false! * Does the database support the given result set type?
*
* @param type - defined in java.sql.ResultSet
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/ */
public boolean deletesAreDetected(int i) throws SQLException public boolean supportsResultSetType(int type) throws SQLException
{ {
return false; // The only type we don't support
return type != java.sql.ResultSet.TYPE_SCROLL_SENSITIVE;
} }
/** /**
* New in 7.1 - we don't support deletes so this must be false! * Does the database support the concurrency type in combination
* with the given result set type?
*
* @param type - defined in java.sql.ResultSet
* @param concurrency - type defined in java.sql.ResultSet
* @return true if so; false otherwise
* @exception SQLException - if a database access error occurs
*/ */
public boolean othersDeletesAreVisible(int i) throws SQLException public boolean supportsResultSetConcurrency(int type,int concurrency) throws SQLException
{ {
// These combinations are not supported!
if(type == java.sql.ResultSet.TYPE_SCROLL_SENSITIVE)
return false; return false;
}
public java.sql.Connection getConnection() throws SQLException // We don't yet support Updateable ResultSets
{ if(concurrency == java.sql.ResultSet.CONCUR_UPDATABLE)
return (java.sql.Connection)connection; return false;
}
/** // Everything else we do
* Return user defined types in a schema return true;
*/
public java.sql.ResultSet getUDTs(String catalog,
String schemaPattern,
String typeNamePattern,
int[] types
) throws SQLException
{
throw org.postgresql.Driver.notImplemented();
} }
/**
* New in 7.1 - we don't support visible inserts so this must be false! /* lots of unsupported stuff... */
*/ public boolean ownUpdatesAreVisible(int type) throws SQLException
public boolean othersInsertsAreVisible(int type) throws SQLException
{ {
return false; return false;
} }
/** public boolean ownDeletesAreVisible(int type) throws SQLException
* New in 7.1 - we don't support visible updates so this must be false!
*/
public boolean updatesAreDetected(int type) throws SQLException
{ {
return false; return false;
} }
/** public boolean ownInsertsAreVisible(int type) throws SQLException
* New in 7.1 - we don't support visible updates so this must be false!
*/
public boolean othersUpdatesAreVisible(int type) throws SQLException
{ {
return false; return false;
} }
public boolean ownUpdatesAreVisible(int type) throws SQLException public boolean othersUpdatesAreVisible(int type) throws SQLException
{ {
return false; return false;
} }
public boolean ownInsertsAreVisible(int type) throws SQLException public boolean othersDeletesAreVisible(int i) throws SQLException
{ {
return false; return false;
} }
public boolean insertsAreDetected(int type) throws SQLException public boolean othersInsertsAreVisible(int type) throws SQLException
{ {
return false; return false;
} }
public boolean ownDeletesAreVisible(int type) throws SQLException public boolean updatesAreDetected(int type) throws SQLException
{ {
return false; return false;
} }
public boolean rowChangesAreDetected(int type) throws SQLException public boolean deletesAreDetected(int i) throws SQLException
{ {
return false; return false;
} }
public boolean rowChangesAreVisible(int type) throws SQLException public boolean insertsAreDetected(int type) throws SQLException
{ {
return false; return false;
} }
...@@ -2797,26 +2844,37 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData ...@@ -2797,26 +2844,37 @@ public class DatabaseMetaData implements java.sql.DatabaseMetaData
} }
/** /**
* New in 7.1 * Return user defined types in a schema
*/ */
public boolean supportsResultSetConcurrency(int type,int concurrency) throws SQLException public java.sql.ResultSet getUDTs(String catalog,
String schemaPattern,
String typeNamePattern,
int[] types
) throws SQLException
{ {
// These combinations are not supported! throw org.postgresql.Driver.notImplemented();
if(type==java.sql.ResultSet.TYPE_SCROLL_SENSITIVE) }
return false;
// We don't yet support Updateable ResultSets
if(concurrency==java.sql.ResultSet.CONCUR_UPDATABLE)
return false;
// Everything else we do /**
return true; * Retrieves the connection that produced this metadata object.
*
* @return the connection that produced this metadata object
*/
public java.sql.Connection getConnection() throws SQLException
{
return (java.sql.Connection)connection;
} }
public boolean supportsResultSetType(int type) throws SQLException /* I don't find these in the spec!?! */
public boolean rowChangesAreDetected(int type) throws SQLException
{ {
// The only type we don't support return false;
return type!=java.sql.ResultSet.TYPE_SCROLL_SENSITIVE;
} }
public boolean rowChangesAreVisible(int type) throws SQLException
{
return false;
}
} }
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