package org.apache.commons.jcs3.auxiliary.disk.jdbc.dsfactory; | |
/* | |
* Licensed to the Apache Software Foundation (ASF) under one | |
* or more contributor license agreements. See the NOTICE file | |
* distributed with this work for additional information | |
* regarding copyright ownership. The ASF licenses this file | |
* to you under the Apache License, Version 2.0 (the | |
* "License"); you may not use this file except in compliance | |
* with the License. You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, | |
* software distributed under the License is distributed on an | |
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
* KIND, either express or implied. See the License for the | |
* specific language governing permissions and limitations | |
* under the License. | |
*/ | |
import java.sql.SQLException; | |
import javax.sql.ConnectionPoolDataSource; | |
import javax.sql.DataSource; | |
import org.apache.commons.dbcp2.cpdsadapter.DriverAdapterCPDS; | |
import org.apache.commons.dbcp2.datasources.InstanceKeyDataSource; | |
import org.apache.commons.dbcp2.datasources.SharedPoolDataSource; | |
import org.apache.commons.jcs3.auxiliary.disk.jdbc.JDBCDiskCacheAttributes; | |
import org.apache.commons.jcs3.log.Log; | |
import org.apache.commons.jcs3.log.LogManager; | |
/** | |
* A factory that looks up the DataSource using the JDBC2 pool methods. | |
* | |
* Borrowed and adapted from Apache DB Torque | |
* | |
* @author <a href="mailto:jmcnally@apache.org">John McNally</a> | |
* @author <a href="mailto:hps@intermeta.de">Henning P. Schmiedehausen</a> | |
*/ | |
public class SharedPoolDataSourceFactory implements DataSourceFactory | |
{ | |
/** The log. */ | |
private static Log log = LogManager.getLog(SharedPoolDataSourceFactory.class); | |
/** The name of the factory. */ | |
private String name; | |
/** The wrapped <code>DataSource</code>. */ | |
private SharedPoolDataSource ds = null; | |
/** | |
* @return the name of the factory. | |
*/ | |
@Override | |
public String getName() | |
{ | |
return name; | |
} | |
/** | |
* @see org.apache.commons.jcs3.auxiliary.disk.jdbc.dsfactory.DataSourceFactory#getDataSource() | |
*/ | |
@Override | |
public DataSource getDataSource() | |
{ | |
return ds; | |
} | |
/** | |
* @see org.apache.commons.jcs3.auxiliary.disk.jdbc.dsfactory.DataSourceFactory#initialize(JDBCDiskCacheAttributes) | |
*/ | |
@Override | |
public void initialize(final JDBCDiskCacheAttributes config) throws SQLException | |
{ | |
this.name = config.getConnectionPoolName(); | |
final ConnectionPoolDataSource cpds = initCPDS(config); | |
final SharedPoolDataSource dataSource = new SharedPoolDataSource(); | |
initJdbc2Pool(dataSource, config); | |
dataSource.setConnectionPoolDataSource(cpds); | |
dataSource.setMaxTotal(config.getMaxTotal()); | |
this.ds = dataSource; | |
} | |
/** | |
* Closes the pool associated with this factory and releases it. | |
* @throws SQLException if the pool cannot be closed properly | |
*/ | |
@Override | |
public void close() throws SQLException | |
{ | |
try | |
{ | |
if (ds != null) | |
{ | |
ds.close(); | |
} | |
} | |
catch (final Exception e) | |
{ | |
throw new SQLException("Exception caught closing data source", e); | |
} | |
ds = null; | |
} | |
/** | |
* Initializes the ConnectionPoolDataSource. | |
* | |
* @param config where to read the settings from | |
* @throws SQLException if a property set fails | |
* @return a configured <code>ConnectionPoolDataSource</code> | |
*/ | |
private ConnectionPoolDataSource initCPDS(final JDBCDiskCacheAttributes config) | |
throws SQLException | |
{ | |
log.debug("Starting initCPDS"); | |
final DriverAdapterCPDS cpds = new DriverAdapterCPDS(); | |
try | |
{ | |
cpds.setDriver(config.getDriverClassName()); | |
} | |
catch (final ClassNotFoundException e) | |
{ | |
throw new SQLException("Driver class not found " + config.getDriverClassName(), e); | |
} | |
cpds.setUrl(config.getUrl()); | |
cpds.setUser(config.getUserName()); | |
cpds.setPassword(config.getPassword()); | |
return cpds; | |
} | |
/** | |
* Initializes the Jdbc2PoolDataSource. | |
* | |
* @param dataSource the dataSource to initialize, not null. | |
* @param config where to read the settings from, not null. | |
* | |
* @throws SQLException if a property set fails. | |
*/ | |
private void initJdbc2Pool(final InstanceKeyDataSource dataSource, final JDBCDiskCacheAttributes config) | |
throws SQLException | |
{ | |
log.debug("Starting initJdbc2Pool"); | |
dataSource.setDescription(config.getConnectionPoolName()); | |
} | |
} |