/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* 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 Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.service.jndi.internal;
import java.util.Hashtable;
import java.util.Map;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.InvalidNameException;
import javax.naming.Name;
import javax.naming.NameNotFoundException;
import javax.naming.NamingException;
import javax.naming.event.EventContext;
import javax.naming.event.NamespaceChangeListener;
import org.jboss.logging.Logger;
import org.hibernate.internal.CoreMessageLogger;
import org.hibernate.internal.util.jndi.JndiHelper;
import org.hibernate.service.jndi.JndiException;
import org.hibernate.service.jndi.JndiNameException;
import org.hibernate.service.jndi.spi.JndiService;
/**
* Standard implementation of JNDI services.
*
* @author Steve Ebersole
*/
public class JndiServiceImpl implements JndiService {
private static final CoreMessageLogger LOG = Logger.getMessageLogger(CoreMessageLogger.class, JndiServiceImpl.class.getName());
private final Hashtable initialContextSettings;
public JndiServiceImpl(Map configurationValues) {
this.initialContextSettings = JndiHelper.extractJndiProperties( configurationValues );
}
@Override
public Object locate(String jndiName) {
InitialContext initialContext = buildInitialContext();
Name name = parseName( jndiName, initialContext );
try {
return initialContext.lookup( name );
}
catch ( NamingException e ) {
throw new JndiException( "Unable to lookup JNDI name [" + jndiName + "]", e );
}
finally {
cleanUp( initialContext );
}
}
private InitialContext buildInitialContext() {
try {
return initialContextSettings.size() == 0 ? new InitialContext() : new InitialContext( initialContextSettings );
}
catch ( NamingException e ) {
throw new JndiException( "Unable to open InitialContext", e );
}
}
private Name parseName(String jndiName, Context context) {
try {
return context.getNameParser( "" ).parse( jndiName );
}
catch ( InvalidNameException e ) {
throw new JndiNameException( "JNDI name [" + jndiName + "] was not valid", e );
}
catch ( NamingException e ) {
throw new JndiException( "Error parsing JNDI name [" + jndiName + "]", e );
}
}
private void cleanUp(InitialContext initialContext) {
try {
initialContext.close();
}
catch ( NamingException e ) {
LOG.unableToCloseInitialContext(e.toString());
}
}
@Override
public void bind(String jndiName, Object value) {
InitialContext initialContext = buildInitialContext();
Name name = parseName( jndiName, initialContext );
try {
bind( name, value, initialContext );
}
finally {
cleanUp( initialContext );
}
}
private void bind(Name name, Object value, Context context) {
try {
LOG.tracef( "Binding : %s", name );
context.rebind( name, value );
}
catch ( Exception initialException ) {
// We had problems doing a simple bind operation.
if ( name.size() == 1 ) {
// if the jndi name had only 1 component there is nothing more we can do...
throw new JndiException( "Error performing bind [" + name + "]", initialException );
}
// Otherwise, there is a good chance this may have been caused by missing intermediate contexts. So we
// attempt to create those missing intermediate contexts and bind again
Context intermediateContextBase = context;
while ( name.size() > 1 ) {
final String intermediateContextName = name.get( 0 );
Context intermediateContext = null;
try {
LOG.tracev( "Intermediate lookup: {0}", intermediateContextName );
intermediateContext = (Context) intermediateContextBase.lookup( intermediateContextName );
}
catch ( NameNotFoundException handledBelow ) {
// ok as we will create it below if not found
}
catch ( NamingException e ) {
throw new JndiException( "Unanticipated error doing intermediate lookup", e );
}
if ( intermediateContext != null ) {
LOG.tracev( "Found intermediate context: {0}", intermediateContextName );
}
else {
LOG.tracev( "Creating sub-context: {0}", intermediateContextName );
try {
intermediateContext = intermediateContextBase.createSubcontext( intermediateContextName );
}
catch ( NamingException e ) {
throw new JndiException( "Error creating intermediate context [" + intermediateContextName + "]", e );
}
}
intermediateContextBase = intermediateContext;
name = name.getSuffix( 1 );
}
LOG.tracev( "Binding : {0}", name );
try {
intermediateContextBase.rebind( name, value );
}
catch ( NamingException e ) {
throw new JndiException( "Error performing intermediate bind [" + name + "]", e );
}
}
LOG.debugf( "Bound name: %s", name );
}
@Override
public void unbind(String jndiName) {
InitialContext initialContext = buildInitialContext();
Name name = parseName( jndiName, initialContext );
try {
initialContext.unbind( name );
}
catch (Exception e) {
throw new JndiException( "Error performing unbind [" + name + "]", e );
}
finally {
cleanUp( initialContext );
}
}
@Override
public void addListener(String jndiName, NamespaceChangeListener listener) {
InitialContext initialContext = buildInitialContext();
Name name = parseName( jndiName, initialContext );
try {
( (EventContext) initialContext ).addNamingListener( name, EventContext.OBJECT_SCOPE, listener );
}
catch (Exception e) {
throw new JndiException( "Unable to bind listener to namespace [" + name + "]", e );
}
finally {
cleanUp( initialContext );
}
}
}