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Code Activity

Some more including the patch to DatabaseMetaData backed out by Bruce.

Browse Source 
Tue Feb 13 16:33:00 GMT 2001 peter@retep.org.uk
        - More TestCases implemented. Refined the test suite api's.
        - Removed need for SimpleDateFormat in ResultSet.getDate() improving
          performance.
        - Rewrote ResultSet.getTime() so that it uses JDK api's better.

Tue Feb 13 10:25:00 GMT 2001 peter@retep.org.uk
        - Added MiscTest to hold reported problems from users.
        - Fixed PGMoney.
        - JBuilder4/JDBCExplorer now works with Money fields. Patched Field &
          ResultSet (lots of methods) for this one. Also changed cash/money to
          return type DOUBLE not DECIMAL. This broke JBuilder as zero scale
          BigDecimal's can't have decimal places!
        - When a Statement is reused, the previous ResultSet is now closed.
        - Removed deprecated call in ResultSet.getTime()

Thu Feb 08 18:53:00 GMT 2001 peter@retep.org.uk
        - Changed a couple of settings in DatabaseMetaData where 7.1 now
          supports those features
        - Implemented the DatabaseMetaData TestCase.

Wed Feb 07 18:06:00 GMT 2001 peter@retep.org.uk
        - Added comment to Connection.isClosed() explaining why we deviate from
          the JDBC2 specification.
        - Fixed bug where the Isolation Level is lost while in autocommit mode.
        - Fixed bug where several calls to getTransactionIsolationLevel()
          returned the first call's result.
This commit is contained in:
Peter Mount
2001-02-13 16:39:06 +00:00
parent 2410963e8c
commit 3d21bf82c3
17 changed files with 1149 additions and 103 deletions
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54
src/interfaces/jdbc/org/postgresql/jdbc2/Connection.java
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@ -17,7 +17,7 @@ import org.postgresql.largeobject.*;
import org.postgresql.util.*;
/**
* $Id: Connection.java,v 1.6 2001/01/31 08:26:02 peter Exp $
* $Id: Connection.java,v 1.7 2001/02/13 16:39:02 peter Exp $
*
* A Connection represents a session with a specific database. Within the
* context of a Connection, SQL statements are executed and results are
@ -39,8 +39,16 @@ public class Connection extends org.postgresql.Connection implements java.sql.Co
// This is a cache of the DatabaseMetaData instance for this connection
protected DatabaseMetaData metadata;
/**
* The current type mappings
*/
protected java.util.Map typemap;
/**
* Cache of the current isolation level
*/
protected int isolationLevel = java.sql.Connection.TRANSACTION_READ_COMMITTED;
/**
* SQL statements without parameters are normally executed using
* Statement objects. If the same SQL statement is executed many
@ -179,8 +187,10 @@ public class Connection extends org.postgresql.Connection implements java.sql.Co
return;
if (autoCommit)
ExecSQL("end");
else
else {
ExecSQL("begin");
doIsolationLevel();
}
this.autoCommit = autoCommit;
}
@ -213,6 +223,7 @@ public class Connection extends org.postgresql.Connection implements java.sql.Co
ExecSQL("commit");
autoCommit = true;
ExecSQL("begin");
doIsolationLevel();
autoCommit = false;
}
@ -231,6 +242,7 @@ public class Connection extends org.postgresql.Connection implements java.sql.Co
ExecSQL("rollback");
autoCommit = true;
ExecSQL("begin");
doIsolationLevel();
autoCommit = false;
}
@ -258,7 +270,18 @@ public class Connection extends org.postgresql.Connection implements java.sql.Co
}
/**
* Tests to see if a Connection is closed
* Tests to see if a Connection is closed.
*
* Peter Feb 7 2000: Now I've discovered that this doesn't actually obey the
* specifications. Under JDBC2.1, this should only be valid _after_ close()
* has been called. It's result is not guraranteed to be valid before, and
* client code should not use it to see if a connection is open. The spec says
* that the client should monitor the SQLExceptions thrown when their queries
* fail because the connection is dead.
*
* I don't like this definition. As it doesn't hurt breaking it here, our
* isClosed() implementation does test the connection, so for PostgreSQL, you
* can rely on isClosed() returning a valid result.
*
* @return the status of the connection
* @exception SQLException (why?)
@ -370,10 +393,20 @@ public class Connection extends org.postgresql.Connection implements java.sql.Co
* @see java.sql.DatabaseMetaData#supportsTransactionIsolationLevel
*/
public void setTransactionIsolation(int level) throws SQLException
{
isolationLevel = level;
doIsolationLevel();
}
/**
* Helper method used by setTransactionIsolation(), commit(), rollback()
* and setAutoCommit(). This sets the current isolation level.
*/
private void doIsolationLevel() throws SQLException
{
String q = "SET TRANSACTION ISOLATION LEVEL";
switch(level) {
switch(isolationLevel) {
case java.sql.Connection.TRANSACTION_READ_COMMITTED:
ExecSQL(q + " READ COMMITTED");
@ -384,7 +417,7 @@ public class Connection extends org.postgresql.Connection implements java.sql.Co
return;
default:
throw new PSQLException("postgresql.con.isolevel",new Integer(level));
throw new PSQLException("postgresql.con.isolevel",new Integer(isolationLevel));
}
}
@ -396,14 +429,17 @@ public class Connection extends org.postgresql.Connection implements java.sql.Co
*/
public int getTransactionIsolation() throws SQLException
{
clearWarnings();
ExecSQL("show xactisolevel");
SQLWarning w = getWarnings();
if (w != null) {
if (w.getMessage().indexOf("READ COMMITTED") != -1) return java.sql.Connection.TRANSACTION_READ_COMMITTED; else
if (w.getMessage().indexOf("READ UNCOMMITTED") != -1) return java.sql.Connection.TRANSACTION_READ_UNCOMMITTED; else
if (w.getMessage().indexOf("REPEATABLE READ") != -1) return java.sql.Connection.TRANSACTION_REPEATABLE_READ; else
if (w.getMessage().indexOf("SERIALIZABLE") != -1) return java.sql.Connection.TRANSACTION_SERIALIZABLE;
String m = w.getMessage();
clearWarnings();
if (m.indexOf("READ COMMITTED") != -1) return java.sql.Connection.TRANSACTION_READ_COMMITTED; else
if (m.indexOf("READ UNCOMMITTED") != -1) return java.sql.Connection.TRANSACTION_READ_UNCOMMITTED; else
if (m.indexOf("REPEATABLE READ") != -1) return java.sql.Connection.TRANSACTION_REPEATABLE_READ; else
if (m.indexOf("SERIALIZABLE") != -1) return java.sql.Connection.TRANSACTION_SERIALIZABLE;
}
return java.sql.Connection.TRANSACTION_READ_COMMITTED;
}