/**
* Copyright (C) 2009 eXo Platform SAS.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.commons.chromattic;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import javax.jcr.RepositoryException;
import javax.jcr.Session;
import org.chromattic.api.ChromatticSession;
import org.exoplatform.services.jcr.core.ManageableRepository;
/**
* An abstract implementation of the {@link org.exoplatform.commons.chromattic.SessionContext} interface. The context owns the
* chromattic session.
*
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
abstract class AbstractContext implements SessionContext {
/** . */
ChromatticSession session;
/** . */
private Map<String, Object> attributes;
/** The related life cycle. */
final ChromatticLifeCycle lifeCycle;
/** . */
private HashSet<SynchronizationListener> listeners;
AbstractContext(ChromatticLifeCycle lifeCycle) {
this.lifeCycle = lifeCycle;
this.session = null;
this.listeners = null;
}
public final ChromatticSession getSession() {
if (session == null) {
session = lifeCycle.realChromattic.openSession();
}
return session;
}
public final Object getAttachment(String name) {
if (attributes != null) {
return attributes.get(name);
}
return null;
}
public final void setAttachment(String name, Object attribute) {
if (attribute != null) {
if (attributes == null) {
attributes = new HashMap<String, Object>();
}
attributes.put(name, attribute);
} else if (attributes != null) {
attributes.remove(name);
}
}
public abstract Session doLogin() throws RepositoryException;
/**
* Open and returns a session. Should be used by subclasses.
*
* @return a session
* @throws RepositoryException any repository exception
*/
protected final Session openSession() throws RepositoryException {
ManageableRepository repo = lifeCycle.manager.repositoryService.getCurrentRepository();
return repo.getSystemSession(lifeCycle.getWorkspaceName());
}
public void close(boolean save) {
try {
if (listeners != null) {
for (SynchronizationListener listener : listeners) {
try {
listener.beforeSynchronization();
} catch (Exception e) {
// to log
}
}
}
//
if (session != null) {
if (save) {
session.save();
}
//
session.close();
}
//
if (listeners != null) {
SynchronizationStatus status = save ? SynchronizationStatus.SAVED : SynchronizationStatus.DISCARDED;
for (SynchronizationListener listener : listeners) {
try {
listener.afterSynchronization(status);
} catch (Exception e) {
// to log
}
}
}
} finally {
lifeCycle.currentContext.set(null);
}
//
lifeCycle.onCloseSession(this);
}
public final void addSynchronizationListener(SynchronizationListener listener) {
if (listener == null) {
throw new NullPointerException();
}
if (listeners == null) {
listeners = new HashSet<SynchronizationListener>();
}
listeners.add(listener);
}
}