/*
 *
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 *
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 *    The use of the Logos is not covered by the GNU General Public License.
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 *    conditions of the Creative Commons License, Version 2.5, Attribution,
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 *
 *    Please make sure that third-party modules and libraries are used
 *    according to their respective licenses.
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 *    Any modifications to this package must retain all copyright notices
 *    of the original copyright holder(s) for the original code used.
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 *    After any such modifications, the original and derivative code shall remain
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 *
 *     Copyright (C) 2004-2011 Open-Xchange, Inc.
 *     Mail: info@open-xchange.com
 *
 *
 *     This program is free software; you can redistribute it and/or modify it
 *     under the terms of the GNU General Public License, Version 2 as published
 *     by the Free Software Foundation.
 *
 *     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 GNU General Public License
 *     for more details.
 *
 *     You should have received a copy of the GNU General Public License along
 *     with this program; if not, write to the Free Software Foundation, Inc., 59
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 */

package com.openexchange.database.internal;

import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import com.openexchange.pooling.ExhaustedActions;
import com.openexchange.pooling.PoolingException;
import com.openexchange.pooling.ReentrantLockPool;

/**
 * Extends the pool API especially for database connections.
 * @author <a href="mailto:marcus@open-xchange.org">Marcus Klein</a>
 */
public class ConnectionPool extends ReentrantLockPool<Connection> implements ConnectionPoolMBean {

    static final Log LOG = LogFactory.getLog(ConnectionPool.class);

    /**
     * Default time between checks if a connection still works.
     */
    public static final long DEFAULT_CHECK_TIME = 120000;

    /**
     * Reference to the lifecycle object.
     */
    private final ConnectionLifecycle lifecycle;

    /**
     * Full constructor with all parameters.
     * @param url JDBC url to the database.
     * @param info Properties for the connections.
     * @param config pool configuration parameters.
     */
    public ConnectionPool(final String url, final Properties info, final ReentrantLockPool.Config config) {
        super(new ConnectionLifecycle(url, info), config);
        lifecycle = (ConnectionLifecycle) getLifecycle();
    }

    /**
     * Gets a connection that does not have any timeouts.
     */
    public Connection getWithoutTimeout() throws PoolingException {
        try {
            return lifecycle.createWithoutTimeout();
        } catch (final SQLException e) {
            throw new PoolingException("Cannot create pooled object.", e);
        }
    }

    /**
     * Returns a connection that is created without timeouts.
     * @param con connection to return. 
     */
    public void backWithoutTimeout(final Connection con) {
        lifecycle.destroy(con);
    }

    public int getNumBrokenConnections() {
        return getNumBroken();
    }

    public int getNumberOfDBConnections() {
        return getPoolSize();
    }

    public static final ReentrantLockPool.Config DEFAULT_CONFIG;

    static {
        DEFAULT_CONFIG = new ReentrantLockPool.Config();
        DEFAULT_CONFIG.minIdle = 0;
        DEFAULT_CONFIG.maxIdle = -1;
        DEFAULT_CONFIG.maxIdleTime = 60000;
        DEFAULT_CONFIG.maxActive = -1;
        DEFAULT_CONFIG.maxWait = 10000;
        DEFAULT_CONFIG.maxLifeTime = -1;
        DEFAULT_CONFIG.exhaustedAction = ExhaustedActions.BLOCK;
        DEFAULT_CONFIG.testOnActivate = false;
        DEFAULT_CONFIG.testOnDeactivate = true;
        DEFAULT_CONFIG.testOnIdle = false;
        DEFAULT_CONFIG.testThreads = false;
//        try {
//            CLOSE = Connection.class.getMethod("close", new Class[] {});
//        } catch (SecurityException e) {
//            throw new RuntimeException(e);
//        } catch (NoSuchMethodException e) {
//            throw new RuntimeException(e);
//        }
    }
}
