/*
* JBoss, Home of Professional Open Source
* Copyright 2006, JBoss Inc., and others contributors as indicated
* by the @authors tag. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
* 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, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* 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,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*
* (C) 2005-2006,
* @author derek.adams@sapience360.com
*/
package org.jboss.internal.soa.esb.persistence.format.jcr;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.Properties;
import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.SimpleCredentials;
import javax.naming.Context;
import javax.naming.NamingException;
import org.apache.commons.lang.StringUtils;
import org.apache.jackrabbit.core.TransientRepository;
import org.apache.jackrabbit.core.config.RepositoryConfig;
import org.jboss.soa.esb.common.Configuration;
import org.jboss.soa.esb.helpers.NamingContextException;
import org.jboss.soa.esb.helpers.NamingContextPool;
import org.jboss.system.server.ServerConfig;
import org.jboss.system.server.ServerConfigLocator;
/**
* Manages connections to a JSR 170 content repository.
*
* @author Derek Adams
*/
public class JCRConnectionManager {
/** Singleton instance */
private static JCRConnectionManager instance;
/** Repository instance */
private Repository repository;
/** Repository session */
private Session session;
/**
* Singleton constructor.
*/
private JCRConnectionManager() {
}
/**
* Get the singleton manager instance.
*
* @return
*/
public static JCRConnectionManager getInstance() {
if (instance == null) {
instance = new JCRConnectionManager();
}
return instance;
}
/**
* Initialize the repository.
*
* @param config
* @param home
* @return
* @throws RepositoryException
*/
protected Repository initRepository(File config, File home) throws RepositoryException {
RepositoryConfig rconfig = RepositoryConfig.create(config.getPath(), home.getPath());
try {
return new TransientRepository(rconfig);
} catch (IOException e) {
throw new RepositoryException(e);
}
}
/**
* Get the repository instance.
*
* @return
*/
protected Repository getRepository() throws RepositoryException {
if (repository == null) {
// If JNDI path specified, load the repository from JNDI.
if (!StringUtils.isEmpty(Configuration.getJcrStoreJNDIPath())) {
Properties environment = new Properties();
environment.setProperty(Context.PROVIDER_URL, Configuration.getJndiServerURL());
environment.setProperty(Context.INITIAL_CONTEXT_FACTORY,
Configuration.getJndiServerContextFactory());
environment.setProperty(Context.URL_PKG_PREFIXES,
Configuration.getJndiServerPkgPrefix());
try {
Context context = NamingContextPool.getNamingContext(environment);
try {
repository = (Repository) context.lookup(Configuration.getJcrStoreJNDIPath());
} catch (NamingException e) {
throw new RepositoryException(e);
} finally {
NamingContextPool.releaseNamingContext(context) ;
}
} catch (NamingContextException nce) {
throw new RepositoryException(nce);
}
}
// If no JNDI path is specified, init the repository with default
// settings based on the respository.xml in the conf directory.
else {
try {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
URL url = loader.getResource("repository.xml");
URI uri = new URI(url.toString());
File repositoryConfig = new File(uri);
ServerConfig config = ServerConfigLocator.locate();
File dataDir = config.getServerDataDir();
File repositoryFolder = new File(dataDir, "repository");
repository = initRepository(repositoryConfig, repositoryFolder);
} catch (URISyntaxException e) {
throw new RepositoryException(e);
}
}
}
return repository;
}
/**
* Open a session on the repository.
*
* @return
* @throws RepositoryException
*/
public Session newRepositorySession() throws RepositoryException {
String username = Configuration.getJcrStoreUsername();
String password = Configuration.getJcrStorePassword();
if (StringUtils.isEmpty(username) || StringUtils.isEmpty(password)) {
throw new RepositoryException(
"JCR username and password must be specified in configuration.");
}
return getRepository().login(new SimpleCredentials(username, password.toCharArray()));
}
/**
* Get the existing repository session or create a new one.
*
* @return
* @throws RepositoryException
*/
public Session getSharedSession() throws RepositoryException {
if (session == null) {
session = newRepositorySession();
}
return session;
}
}