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/**
* $Revision$
* $Date$
*
* Copyright (C) 2004-2008 Jive Software. All rights reserved.
*
* Licensed 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.jivesoftware.database;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.Properties;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
import org.jivesoftware.util.JiveGlobals;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* An implementation of ConnectionProvider that utilizes a JDBC 2.0 DataSource
* made available via JNDI. This is useful for application servers where a pooled
* data connection is already provided so Jive can share the pool with the
* other applications.
* <p>
* The JNDI location of the DataSource stored as the Jive property
* <code>database.JNDIProvider.name</code>. This can be overridden by setting
* the provider's <code>name</code> property if required.</p>
*
* @author <a href="mailto:joe@truemesh.com">Joe Walnes</a>
* @see ConnectionProvider
*/
public class JNDIDataSourceProvider implements ConnectionProvider {
private static final Logger Log = LoggerFactory.getLogger(JNDIDataSourceProvider.class);
private String dataSourceName;
private DataSource dataSource;
/**
* Keys of JNDI properties to query PropertyManager for.
*/
private static final String[] jndiPropertyKeys = {
Context.APPLET,
Context.AUTHORITATIVE,
Context.BATCHSIZE,
Context.DNS_URL,
Context.INITIAL_CONTEXT_FACTORY,
Context.LANGUAGE,
Context.OBJECT_FACTORIES,
Context.PROVIDER_URL,
Context.REFERRAL,
Context.SECURITY_AUTHENTICATION,
Context.SECURITY_CREDENTIALS,
Context.SECURITY_PRINCIPAL,
Context.SECURITY_PROTOCOL,
Context.STATE_FACTORIES,
Context.URL_PKG_PREFIXES
};
/**
* Constructs a new JNDI pool.
*/
public JNDIDataSourceProvider() {
dataSourceName = JiveGlobals.getXMLProperty("database.JNDIProvider.name");
}
public boolean isPooled() {
return true;
}
public void start() {
if (dataSourceName == null || dataSourceName.equals("")) {
Log.error("No name specified for DataSource. JNDI lookup will fail", new Throwable());
return;
}
try {
Properties contextProperties = new Properties();
for (String key: jndiPropertyKeys) {
String value = JiveGlobals.getXMLProperty(key);
if (value != null) {
contextProperties.setProperty(key, value);
}
}
Context context;
if (contextProperties.size() > 0) {
context = new InitialContext(contextProperties);
}
else {
context = new InitialContext();
}
dataSource = (DataSource)context.lookup(dataSourceName);
}
catch (Exception e) {
Log.error("Could not lookup DataSource at '" + dataSourceName + "'", e);
}
}
public void restart() {
destroy();
start();
}
public void destroy() {
}
public Connection getConnection() throws SQLException {
if (dataSource == null) {
throw new SQLException("DataSource has not been initialized.");
}
return dataSource.getConnection();
}
}