/*
* 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.
*/
package org.apache.synapse.commons.datasource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.commons.SynapseCommonsException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.sql.DataSource;
import java.util.Properties;
/**
* Utility class to locate DataSources from a JNDI tree
*/
public class DataSourceFinder {
private static Log log = LogFactory.getLog(DataSourceFinder.class);
/**
* Find a DataSource using the given name and JNDI environment properties
*
* @param dsName Name of the DataSource to be found
* @param jndiEnv JNDI environment properties
* @return DataSource if found , otherwise null
*/
public static DataSource find(String dsName, Properties jndiEnv) {
try {
Context context = new InitialContext(jndiEnv);
return find(dsName, context);
} catch (NamingException e) {
throw new SynapseCommonsException("Error looking up DataSource : " + dsName +
" using JNDI properties : " + jndiEnv, e, log);
}
}
/**
* Find a DataSource using the given name and naming context
*
* @param dsName Name of the DataSource to be found
* @param context Naming Context
* @return DataSource if found , otherwise null
*/
public static DataSource find(String dsName, Context context) {
try {
Object dataSourceO = context.lookup(dsName);
if (dataSourceO != null && dataSourceO instanceof DataSource) {
return (DataSource) dataSourceO;
} else {
throw new SynapseCommonsException("DataSource : " + dsName + " not found " +
"when looking up using JNDI properties : " + context.getEnvironment(), log);
}
} catch (NamingException e) {
throw new SynapseCommonsException("Error looking up DataSource : " + dsName
+ " using JNDI" + " properties : " + context, e, log);
}
}
}