/*
* 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.vysper.storage.jcr;
import javax.jcr.Node;
import javax.jcr.Repository;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import javax.jcr.SimpleCredentials;
import org.apache.jackrabbit.core.TransientRepository;
import org.apache.vysper.xmpp.addressing.Entity;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* back-end stuff for JCR, used by the semantic specific adapters
* @author The Apache MINA Project (dev@mina.apache.org)
*/
public class JcrStorage {
final Logger logger = LoggerFactory.getLogger(JcrStorage.class);
protected static JcrStorage jcrStorageSingleton;
protected JcrStorage() {
super();
// protected
}
public static JcrStorage getInstance() {
synchronized (JcrStorage.class) {
if (jcrStorageSingleton == null)
jcrStorageSingleton = new JcrStorage();
return jcrStorageSingleton;
}
}
protected Session session = null;
public Session getRepositorySession() throws JcrStorageException {
if (session != null)
return session;
try {
Repository repository = new TransientRepository();
session = repository.login(new SimpleCredentials("xmpp-admin", "adminpassword".toCharArray()));
return session;
} catch (Exception e) {
throw new JcrStorageException(e);
}
}
public Node getRootNode() throws JcrStorageException {
try {
return getRepositorySession().getRootNode();
} catch (RepositoryException e) {
throw new JcrStorageException(e);
}
}
public Node getEntityNode(Entity bareEntity, String namespace, boolean createIfMissing) throws JcrStorageException {
bareEntity = bareEntity.getBareJID(); // make it really sure
if (namespace != null)
namespace = namespace.replace(':', '_');
final String path = "/accountentity/" + bareEntity.getFullQualifiedName()
+ (namespace != null ? "/" + namespace : "");
if (!itemExists(path)) {
if (!createIfMissing)
return null;
Node accountEntityNode = getOrCreate(getRootNode(), "accountentity");
Node entityNode = getOrCreate(accountEntityNode, bareEntity.getFullQualifiedName());
if (namespace != null)
entityNode = getOrCreate(entityNode, namespace);
return entityNode;
} else {
try {
return (Node) getRepositorySession().getItem(path);
} catch (RepositoryException e) {
throw new JcrStorageException(e);
}
}
}
private boolean itemExists(String absolutePath) throws JcrStorageException {
try {
return getRepositorySession().itemExists(absolutePath);
} catch (RepositoryException e) {
throw new JcrStorageException(e);
} catch (JcrStorageException e) {
throw e;
}
}
protected Node getOrCreate(Node parent, String nodeName) throws JcrStorageException {
Node childNode;
try {
childNode = parent.getNode(nodeName);
} catch (RepositoryException e) {
childNode = null;
}
if (childNode == null) {
try {
childNode = parent.addNode(nodeName);
parent.save();
childNode.save();
logger.info("JCR node created: " + childNode);
} catch (RepositoryException e) {
throw new JcrStorageException(e);
}
}
return childNode;
}
}