org.opencms.db.CmsSqlManager Maven / Gradle / Ivy
/*
* This library is part of OpenCms -
* the Open Source Content Management System
*
* Copyright (c) Alkacon Software GmbH & Co. KG (http://www.alkacon.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* For further information about Alkacon Software GmbH & Co. KG, please see the
* company website: http://www.alkacon.com
*
* For further information about OpenCms, please see the
* project website: http://www.opencms.org
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.opencms.db;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
/**
* Superclass for all SQL manager implementations.
*
* @since 6.0.0
*/
public class CmsSqlManager {
/** the driver manager. */
private CmsDriverManager m_driverManager;
/**
* Protected constructor to allow only subclassing.
*/
protected CmsSqlManager() {
// hide public constructor
}
/**
* Creates a new SQL manager from the provided driver manager.
*
* @param driverManager the low level database driver manager
*/
protected CmsSqlManager(CmsDriverManager driverManager) {
m_driverManager = driverManager;
}
/**
* Returns the number of active connections managed by a pool.
*
* @param dbPoolUrl the url of a pool
* @return the number of active connections
* @throws CmsDbException if something goes wrong
*/
public int getActiveConnections(String dbPoolUrl) throws CmsDbException {
return m_driverManager.getActiveConnections(dbPoolUrl);
}
/**
* Returns a connection to the database using the given pool identified by its name.
*
* @param dbPoolName the pool name
* @return a database connection
* @throws SQLException if something goes wrong
*/
public Connection getConnection(String dbPoolName) throws SQLException {
return getConnectionByUrl(CmsDbPoolV11.OPENCMS_URL_PREFIX + dbPoolName);
}
/**
* Returns a connection to the database using the given pool identified by its full url.
*
* @param dbPoolUrl the pool url
* @return a database connection
* @throws SQLException if something goes wrong
*/
public Connection getConnectionByUrl(String dbPoolUrl) throws SQLException {
return CmsDriverManager.m_pools.get(dbPoolUrl).getConnection();
}
/**
* Returns a list of available database connection pool names.
*
* @return a list of database connection pool names
*/
public List getDbPoolUrls() {
return new ArrayList(CmsDriverManager.m_pools.keySet());
}
/**
* Returns the name of the default database connection pool.
*
* @return the name of the default database connection pool
*/
public String getDefaultDbPoolName() {
return CmsDbPoolV11.getDefaultDbPoolName();
}
/**
* Returns the number of idle connections managed by a pool.
*
* @param dbPoolUrl the url of a pool
* @return the number of idle connections
* @throws CmsDbException if something goes wrong
*/
public int getIdleConnections(String dbPoolUrl) throws CmsDbException {
return m_driverManager.getIdleConnections(dbPoolUrl);
}
}