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authorBruce Momjian <bruce@momjian.us>2001-07-30 14:51:19 +0000
committerBruce Momjian <bruce@momjian.us>2001-07-30 14:51:19 +0000
commit509f5d241ac2fe26146d227ddb0e56eb4d7ca33c (patch)
tree7343d2a127be77e5ea2b42011b6775c1d53b9feb /src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java
parent462b7d46d1feaf6a43a77bc8470a387316c02997 (diff)
downloadpostgresql-509f5d241ac2fe26146d227ddb0e56eb4d7ca33c.tar.gz
This patch merges the identical methods from the JDBC1 and JDBC2
connection implementations (org.postgresql.jdbc[1|2].Connection) into their superclass (org.postgresql.Connection). It also changes the close() methods of Connection and PG_Stream, so that PG_Stream no longer is responsible for sending the termination packet 'X' to the backend. I figured that protocol-level stuff like that belonged in Connection more than in PG_Stream. Anders Bengtsson
Diffstat (limited to 'src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java')
-rw-r--r--src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java225
1 files changed, 1 insertions, 224 deletions
diff --git a/src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java b/src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java
index 91d38a8de1..0dab654030 100644
--- a/src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java
+++ b/src/interfaces/jdbc/org/postgresql/jdbc1/Connection.java
@@ -17,7 +17,7 @@ import org.postgresql.largeobject.*;
import org.postgresql.util.*;
/**
- * $Id: Connection.java,v 1.6 2001/07/21 18:56:17 momjian Exp $
+ * $Id: Connection.java,v 1.7 2001/07/30 14:51:19 momjian Exp $
*
* A Connection represents a session with a specific database. Within the
* context of a Connection, SQL statements are executed and results are
@@ -101,123 +101,6 @@ public class Connection extends org.postgresql.Connection implements java.sql.Co
}
/**
- * A driver may convert the JDBC sql grammar into its system's
- * native SQL grammar prior to sending it; nativeSQL returns the
- * native form of the statement that the driver would have sent.
- *
- * @param sql a SQL statement that may contain one or more '?'
- * parameter placeholders
- * @return the native form of this statement
- * @exception SQLException if a database access error occurs
- */
- public String nativeSQL(String sql) throws SQLException
- {
- return sql;
- }
-
- /**
- * If a connection is in auto-commit mode, than all its SQL
- * statements will be executed and committed as individual
- * transactions. Otherwise, its SQL statements are grouped
- * into transactions that are terminated by either commit()
- * or rollback(). By default, new connections are in auto-
- * commit mode. The commit occurs when the statement completes
- * or the next execute occurs, whichever comes first. In the
- * case of statements returning a ResultSet, the statement
- * completes when the last row of the ResultSet has been retrieved
- * or the ResultSet has been closed. In advanced cases, a single
- * statement may return multiple results as well as output parameter
- * values. Here the commit occurs when all results and output param
- * values have been retrieved.
- *
- * @param autoCommit - true enables auto-commit; false disables it
- * @exception SQLException if a database access error occurs
- */
- public void setAutoCommit(boolean autoCommit) throws SQLException
- {
- if (this.autoCommit == autoCommit)
- return;
- if (autoCommit)
- ExecSQL("end");
- else
- ExecSQL("begin");
- this.autoCommit = autoCommit;
- }
-
- /**
- * gets the current auto-commit state
- *
- * @return Current state of the auto-commit mode
- * @exception SQLException (why?)
- * @see setAutoCommit
- */
- public boolean getAutoCommit() throws SQLException
- {
- return this.autoCommit;
- }
-
- /**
- * The method commit() makes all changes made since the previous
- * commit/rollback permanent and releases any database locks currently
- * held by the Connection. This method should only be used when
- * auto-commit has been disabled. (If autoCommit == true, then we
- * just return anyhow)
- *
- * @exception SQLException if a database access error occurs
- * @see setAutoCommit
- */
- public void commit() throws SQLException
- {
- if (autoCommit)
- return;
- ExecSQL("commit");
- autoCommit = true;
- ExecSQL("begin");
- autoCommit = false;
- }
-
- /**
- * The method rollback() drops all changes made since the previous
- * commit/rollback and releases any database locks currently held by
- * the Connection.
- *
- * @exception SQLException if a database access error occurs
- * @see commit
- */
- public void rollback() throws SQLException
- {
- if (autoCommit)
- return;
- ExecSQL("rollback");
- autoCommit = true;
- ExecSQL("begin");
- autoCommit = false;
- }
-
- /**
- * In some cases, it is desirable to immediately release a Connection's
- * database and JDBC resources instead of waiting for them to be
- * automatically released (cant think why off the top of my head)
- *
- * <B>Note:</B> A Connection is automatically closed when it is
- * garbage collected. Certain fatal errors also result in a closed
- * connection.
- *
- * @exception SQLException if a database access error occurs
- */
- public void close() throws SQLException
- {
- if (pg_stream != null)
- {
- try
- {
- pg_stream.close();
- } catch (IOException e) {}
- pg_stream = null;
- }
- }
-
- /**
* Tests to see if a Connection is closed
*
* @return the status of the connection
@@ -244,112 +127,6 @@ public class Connection extends org.postgresql.Connection implements java.sql.Co
return metadata;
}
- /**
- * You can put a connection in read-only mode as a hunt to enable
- * database optimizations
- *
- * <B>Note:</B> setReadOnly cannot be called while in the middle
- * of a transaction
- *
- * @param readOnly - true enables read-only mode; false disables it
- * @exception SQLException if a database access error occurs
- */
- public void setReadOnly (boolean readOnly) throws SQLException
- {
- this.readOnly = readOnly;
- }
-
- /**
- * Tests to see if the connection is in Read Only Mode. Note that
- * we cannot really put the database in read only mode, but we pretend
- * we can by returning the value of the readOnly flag
- *
- * @return true if the connection is read only
- * @exception SQLException if a database access error occurs
- */
- public boolean isReadOnly() throws SQLException
- {
- return readOnly;
- }
-
- /**
- * You can call this method to try to change the transaction
- * isolation level using one of the TRANSACTION_* values.
- *
- * <B>Note:</B> setTransactionIsolation cannot be called while
- * in the middle of a transaction
- *
- * @param level one of the TRANSACTION_* isolation values with
- * the exception of TRANSACTION_NONE; some databases may
- * not support other values
- * @exception SQLException if a database access error occurs
- * @see java.sql.DatabaseMetaData#supportsTransactionIsolationLevel
- */
- public void setTransactionIsolation(int level) throws SQLException
- {
- String q = "SET TRANSACTION ISOLATION LEVEL";
-
- switch(level) {
-
- case java.sql.Connection.TRANSACTION_READ_COMMITTED:
- ExecSQL(q + " READ COMMITTED");
- return;
-
- case java.sql.Connection.TRANSACTION_SERIALIZABLE:
- ExecSQL(q + " SERIALIZABLE");
- return;
-
- default:
- throw new PSQLException("postgresql.con.isolevel",new Integer(level));
- }
- }
-
- /**
- * Get this Connection's current transaction isolation mode.
- *
- * @return the current TRANSACTION_* mode value
- * @exception SQLException if a database access error occurs
- */
- public int getTransactionIsolation() throws SQLException
- {
- 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;
- }
- return java.sql.Connection.TRANSACTION_READ_COMMITTED;
- }
-
- /**
- * The first warning reported by calls on this Connection is
- * returned.
- *
- * <B>Note:</B> Sebsequent warnings will be changed to this
- * SQLWarning
- *
- * @return the first SQLWarning or null
- * @exception SQLException if a database access error occurs
- */
- public SQLWarning getWarnings() throws SQLException
- {
- return firstWarning;
- }
-
- /**
- * After this call, getWarnings returns null until a new warning
- * is reported for this connection.
- *
- * @exception SQLException if a database access error occurs
- */
- public void clearWarnings() throws SQLException
- {
- firstWarning = null;
- }
-
/**
* This overides the method in org.postgresql.Connection and returns a
* ResultSet.