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/*-------------------------------------------------------------------------
*
* Copyright (c) 2003-2005, PostgreSQL Global Development Group
*
* IDENTIFICATION
* $PostgreSQL: pgjdbc/org/postgresql/PGConnection.java,v 1.14 2005/04/20 00:10:58 oliver Exp $
*
*-------------------------------------------------------------------------
*/
package org.postgresql;
import java.sql.*;
import org.postgresql.core.Encoding;
import org.postgresql.fastpath.Fastpath;
import org.postgresql.largeobject.LargeObjectManager;
/**
* This interface defines the public PostgreSQL extensions to
* java.sql.Connection. All Connections returned by the PostgreSQL driver
* implement PGConnection.
*/
public interface PGConnection
{
/**
* This method returns any notifications that have been received
* since the last call to this method.
* Returns null if there have been no notifications.
* @since 7.3
*/
public PGNotification[] getNotifications() throws SQLException;
/**
* This returns the LargeObject API for the current connection.
* @since 7.3
*/
public LargeObjectManager getLargeObjectAPI() throws SQLException;
/**
* This returns the Fastpath API for the current connection.
* @since 7.3
*/
public Fastpath getFastpathAPI() throws SQLException;
/**
* This allows client code to add a handler for one of org.postgresql's
* more unique data types. It is approximately equivalent to
* <code>addDataType(type, Class.forName(name))</code>.
*
* @deprecated As of 8.0, replaced by
* {@link #addDataType(String,Class)}. This deprecated method does not
* work correctly for registering classes that cannot be directly loaded
* by the JDBC driver's classloader.
* @throws RuntimeException if the type cannot be registered (class not
* found, etc).
*/
public void addDataType(String type, String name);
/**
* This allows client code to add a handler for one of org.postgresql's
* more unique data types.
*
* <p><b>NOTE:</b> This is not part of JDBC, but an extension.
*
* <p>The best way to use this is as follows:
*
* <p><pre>
* ...
* ((org.postgresql.PGConnection)myconn).addDataType("mytype", my.class.name.class);
* ...
* </pre>
*
* <p>where myconn is an open Connection to org.postgresql.
*
* <p>The handling class must extend org.postgresql.util.PGobject
*
* @since 8.0
*
* @param type the PostgreSQL type to register
* @param klass the class implementing the Java representation of the type;
* this class must implement {@link org.postgresql.util.PGobject}).
*
* @throws SQLException if <code>klass</code> does not implement
* {@link org.postgresql.util.PGobject}).
*
* @see org.postgresql.util.PGobject
*/
public void addDataType(String type, Class klass)
throws SQLException;
/**
* Set the default statement reuse threshold before enabling server-side
* prepare. See {@link org.postgresql.PGStatement#setPrepareThreshold(int)} for
* details.
*
* @since build 302
* @param threshold the new threshold
*/
public void setPrepareThreshold(int threshold);
/**
* Get the default server-side prepare reuse threshold for statements created
* from this connection.
*
* @since build 302
* @return the current threshold
*/
public int getPrepareThreshold();
/** @deprecated */
public Encoding getEncoding() throws SQLException;
/** @deprecated */
public int getSQLType(String pgTypeName) throws SQLException;
/** @deprecated */
public int getSQLType(int oid) throws SQLException;
/** @deprecated */
public String getPGType(int oid) throws SQLException;
/** @deprecated */
public int getPGType(String typeName) throws SQLException;
/** @deprecated */
public Object getObject(String type, String value) throws SQLException;
}
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