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/**
* $RCSfile$
* $Revision$
* $Date$
*
* Copyright (C) 2004 Jive Software. All rights reserved.
*
* This software is published under the terms of the GNU Public License (GPL),
* a copy of which is included in this distribution.
*/
package org.jivesoftware.database;
import org.jivesoftware.util.JiveGlobals;
import org.jivesoftware.util.Log;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.sql.DataSource;
import java.sql.Connection;
import java.sql.SQLException;
import java.util.*;
/**
* 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>
* <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.
*
* @author <a href="mailto:joe@truemesh.com">Joe Walnes</a>
* @see ConnectionProvider
*/
public class JNDIDataSourceProvider implements ConnectionProvider {
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
};
/**
* Initialize.
*/
public JNDIDataSourceProvider() {
dataSourceName = JiveGlobals.getXMLProperty("database.JNDIProvider.name");
}
public String getName() {
return "JNDI DataSource Connection Provider";
}
public String getDescription() {
return "Connection Provider for Jive to lookup pooled "
+ "DataSource from JNDI location. Requires 'name' "
+ "property with JNDI location. This can be set in "
+ "the properties file as 'JNDIDataSource.name'";
}
public String getAuthor() {
return "Joe Walnes - joe@truemesh.com";
}
public int getMajorVersion() {
return 2;
}
public int getMinorVersion() {
return 1;
}
public boolean isPooled() {
return true;
}
public void start() {
if (dataSourceName == null || dataSourceName.equals("")) {
error("No name specified for DataSource. JNDI lookup will fail", null);
return;
}
try {
Properties contextProperties = new Properties();
for (int i = 0; i < jndiPropertyKeys.length; i++) {
String k = jndiPropertyKeys[i];
String v = JiveGlobals.getXMLProperty(k);
if (v != null) {
contextProperties.setProperty(k, v);
}
}
Context context = null;
if (contextProperties.size() > 0) {
context = new InitialContext(contextProperties);
}
else {
context = new InitialContext();
}
dataSource = (DataSource)context.lookup(dataSourceName);
}
catch (Exception e) {
error("Could not lookup DataSource at '" + dataSourceName + "'", e);
}
}
public void restart() {
destroy();
start();
}
public void destroy() {
}
public Connection getConnection() {
if (dataSource == null) {
error("DataSource has not been initialized.", null);
return null;
}
try {
return dataSource.getConnection();
}
catch (SQLException e) {
error("Could not retrieve Connection from DataSource", e);
return null;
}
}
public String getProperty(String name) {
if ("name".equals(name)) {
return dataSourceName;
}
else {
return null;
}
}
public void setProperty(String name, String value) {
if ("name".equals(name)) {
this.dataSourceName = value;
JiveGlobals.setXMLProperty("database.JNDIProvider.name", value);
}
}
public Iterator propertyNames() {
List list = new ArrayList();
list.add("name");
return Collections.unmodifiableList(list).iterator();
}
public String getPropertyDescription(String name) {
if ("name".equals(name)) {
return "JNDI name to lookup. eg: java:comp/env/jdbc/MyDataSource";
}
else {
return null;
}
}
/**
* Log an error.
*
* @param msg Description of error
* @param e Exception to printStackTrace (may be null)
*/
private final void error(String msg, Exception e) {
Log.error(msg, e);
}
}