| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 1999 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Xalan" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation and was |
| * originally based on software copyright (c) 1999, Lotus |
| * Development Corporation., http://www.lotus.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| |
| package org.apache.xalan.lib.sql; |
| |
| import java.util.Hashtable; |
| import java.lang.IllegalArgumentException; |
| import org.apache.xalan.res.XSLMessages; |
| import org.apache.xalan.res.XSLTErrorResources; |
| |
| /** |
| */ |
| public class ConnectionPoolManager |
| { |
| /** |
| */ |
| static Hashtable m_poolTable = null; |
| /** |
| */ |
| static boolean m_isInit = false; |
| |
| /** |
| */ |
| public ConnectionPoolManager( ) |
| { |
| init(); |
| } |
| |
| /** |
| * Initialize the internal structures of the Pool Manager |
| * @return |
| */ |
| public synchronized void init( ) |
| { |
| // Only do this process once |
| if (m_isInit == true) return; |
| |
| |
| // |
| // Initialize the pool table |
| // |
| m_poolTable = new Hashtable(); |
| |
| m_isInit = true; |
| } |
| |
| /** |
| * Register a nuew connection pool to the global pool table. |
| * If a pool by that name currently exists, then throw an |
| * IllegalArgumentException stating that the pool already |
| * exist. |
| * @param name |
| * @param pool |
| * @return |
| * @link org.apache.xalan.lib.sql.ConnectionPool} |
| * @return |
| * @throws <code>IllegalArgumentException</code>, throw this exception |
| * if a pool with the same name currently exists. |
| */ |
| public synchronized void registerPool( String name, ConnectionPool pool ) |
| { |
| if ( m_poolTable.containsKey(name) ) |
| { |
| throw new IllegalArgumentException(XSLMessages.createMessage(XSLTErrorResources.ER_POOL_EXISTS, null)); //"Pool already exists"); |
| } |
| |
| m_poolTable.put(name, pool); |
| } |
| |
| /** |
| * Remove a pool from the global table. If the pool still has |
| * active connections, then only mark this pool as inactive and |
| * leave it around until all the existing connections are closed. |
| * @param name |
| * @return |
| */ |
| public synchronized void removePool( String name ) |
| { |
| ConnectionPool pool = getPool(name); |
| |
| if (null != pool) |
| { |
| // |
| // Disable future use of this pool under the Xalan |
| // extension only. This flag should only exist in the |
| // wrapper and not in the actual pool implementation. |
| pool.setPoolEnabled(false); |
| |
| |
| // |
| // Remove the pool from the Hashtable if we don'd have |
| // any active connections. |
| // |
| if ( ! pool.hasActiveConnections() ) m_poolTable.remove(name); |
| } |
| |
| } |
| |
| |
| /** |
| * Return the connection pool referenced by the name |
| * @param name |
| * @return |
| * @returns <code>ConnectionPool</code> a reference to the ConnectionPool |
| * object stored in the Pool Table. If the named pool does not exist, return |
| * null |
| */ |
| public synchronized ConnectionPool getPool( String name ) |
| { |
| return (ConnectionPool) m_poolTable.get(name); |
| } |
| |
| } |