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/*
 * $Id$
 * 
 * Firebird Open Source J2EE Connector - JDBC Driver
 *
 * Distributable under LGPL license.
 * You may obtain a copy of the License at http://www.gnu.org/copyleft/lgpl.html
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * LGPL License for more details.
 *
 * This file was created by members of the firebird development team.
 * All individual contributions remain the Copyright (C) of those
 * individuals.  Contributors to this file are either listed here or
 * can be obtained from a CVS history command.
 *
 * All rights reserved.
 */
package org.firebirdsql.ds;

import java.sql.SQLException;

import javax.naming.NamingException;
import javax.naming.Reference;
import javax.naming.Referenceable;
import javax.resource.ResourceException;
import javax.sql.ConnectionPoolDataSource;
import javax.sql.PooledConnection;

import org.firebirdsql.gds.impl.GDSFactory;
import org.firebirdsql.gds.impl.GDSType;
import org.firebirdsql.jca.FBManagedConnectionFactory;
import org.firebirdsql.jdbc.FBDataSource;
import org.firebirdsql.jdbc.FBSQLException;

/**
 * Bare-bones implementation of {@link javax.sql.ConnectionPoolDataSource}.
 * 

* Please be aware that this is not a connectionpool. This class provides * PooledConnection objects for connection pool implementations (eg as provided * by a JEE application server). If you need a standalone connectionpool, * consider using a connectionpool implementation like c3p0, BoneCP or DBCP. *

* * @author Mark Rotteveel * @since 2.2 */ public class FBConnectionPoolDataSource extends FBAbstractCommonDataSource implements ConnectionPoolDataSource, Referenceable { private volatile transient FBDataSource internalDs; public PooledConnection getPooledConnection() throws SQLException { return getPooledConnection(getUser(), getPassword()); } public PooledConnection getPooledConnection(String user, String password) throws SQLException { if (internalDs == null) { initialize(); } return new FBPooledConnection(internalDs.getConnection(user, password)); } private void initialize() throws SQLException { synchronized (lock) { if (internalDs != null) { return; } try { GDSType gdsType = GDSType.getType(getType()); if (gdsType == null) { gdsType = GDSFactory.getDefaultGDSType(); } FBManagedConnectionFactory mcf = new FBManagedConnectionFactory( gdsType, getConnectionProperties()); internalDs = (FBDataSource) mcf.createConnectionFactory(); internalDs.setLogWriter(getLogWriter()); } catch (ResourceException e) { throw new FBSQLException(e); } } } protected void checkNotStarted() { if (internalDs != null) { throw new IllegalStateException("DataSource already in use. Change of this property is not allowed"); } } public Reference getReference() throws NamingException { Reference ref = new Reference(getClass().getName(), DataSourceFactory.class.getName(), null); FBAbstractCommonDataSource.updateReference(ref, this); return ref; } }




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