/*
* 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.
*
* You should have received a copy of the GNU General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/gpl-2.0.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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.
*
* Copyright 2005 - 2008 Pentaho Corporation. All rights reserved.
*
* @created Jul 07, 2008
* @author rmansoor
*/
package org.pentaho.platform.engine.services.connection.datasource.dbcp;
import javax.naming.NamingException;
import javax.sql.DataSource;
import org.pentaho.platform.api.data.DatasourceServiceException;
import org.pentaho.platform.api.data.IDatasourceService;
import org.pentaho.platform.api.engine.ObjectFactoryException;
import org.pentaho.platform.api.repository.datasource.DatasourceMgmtServiceException;
import org.pentaho.platform.api.repository.datasource.IDatasource;
import org.pentaho.platform.api.repository.datasource.IDatasourceMgmtService;
import org.pentaho.platform.engine.core.system.PentahoSystem;
import org.pentaho.platform.engine.services.messages.Messages;
public class PooledDatasourceService extends BaseDatasourceService {
public PooledDatasourceService() {
}
DataSource retrieve(String datasource) throws DatasourceServiceException {
DataSource ds = null;
try {
IDatasourceMgmtService datasourceMgmtSvc = (IDatasourceMgmtService) PentahoSystem.getObjectFactory().get(IDatasourceMgmtService.class,null);
IDatasource dataSource = datasourceMgmtSvc
.getDatasource(datasource);
if(datasource != null) {
ds = PooledDatasourceHelper
.setupPooledDataSource(dataSource);
} else {
throw new DatasourceServiceException(Messages.getInstance().getErrorString("PooledDatasourceService.ERROR_0002_UNABLE_TO_GET_DATASOURCE")); //$NON-NLS-1$
}
cacheManager.putInRegionCache(IDatasourceService.JDBC_DATASOURCE, datasource, ds);
} catch (ObjectFactoryException objface) {
throw new DatasourceServiceException(Messages.getInstance().getErrorString("PooledDatasourceService.ERROR_0001_UNABLE_TO_INSTANTIATE_OBJECT"),objface); //$NON-NLS-1$
} catch (DatasourceMgmtServiceException daoe) {
throw new DatasourceServiceException(Messages.getInstance().getErrorString("PooledDatasourceService.ERROR_0002_UNABLE_TO_GET_DATASOURCE"),daoe); //$NON-NLS-1$
}
return ds;
}
/**
* This method clears the JNDI DS cache. The need exists because after a JNDI
* connection edit the old DS must be removed from the cache.
*
*/
public void clearCache() {
cacheManager.removeRegionCache(IDatasourceService.JDBC_DATASOURCE);
}
/**
* This method clears the JNDI DS cache. The need exists because after a JNDI
* connection edit the old DS must be removed from the cache.
*
*/
public void clearDataSource(String dsName) {
cacheManager.removeFromRegionCache(IDatasourceService.JDBC_DATASOURCE, dsName);
}
/**
* Since JNDI is supported different ways in different app servers, it's
* nearly impossible to have a ubiquitous way to look up a datasource. This
* method is intended to hide all the lookups that may be required to find a
* jndi name.
*
* @param dsName
* The Datasource name
* @return DataSource if there is one bound in JNDI
* @throws NamingException
*/
public DataSource getDataSource(String dsName)
throws DatasourceServiceException {
DataSource dataSource = null;
if (cacheManager != null) {
Object foundDs = cacheManager.getFromRegionCache(
IDatasourceService.JDBC_DATASOURCE, dsName);
if (foundDs != null) {
dataSource = (DataSource) foundDs;
} else {
dataSource = retrieve(dsName);
}
}
return dataSource;
}
/**
* Since JNDI is supported different ways in different app servers, it's
* nearly impossible to have a ubiquitous way to look up a datasource. This
* method is intended to hide all the lookups that may be required to find a
* jndi name, and return the actual bound name.
*
* @param dsName
* The Datasource name (like SampleData)
* @return The bound DS name if it is bound in JNDI (like "jdbc/SampleData")
* @throws DatasourceServiceException
*/
public String getDSBoundName(final String dsName) throws DatasourceServiceException {
return dsName;
}
/**
* Since JNDI is supported different ways in different app servers, it's
* nearly impossible to have a ubiquitous way to look up a datasource. This
* method is intended to extract just the regular name of a specified JNDI source.
*
* @param dsName The Datasource name (like "jdbc/SampleData")
* @return The unbound DS name (like "SampleData")
*/
public String getDSUnboundName(final String dsName) {
return dsName;
}
}