Content of file ESWorkspaceProviderProviderFactory.java
/*******************************************************************************
* Copyright (c) 2011-2013 EclipseSource Muenchen GmbH and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 2.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/legal/epl-2.0/
*
* SPDX-License-Identifier: EPL-2.0
*
* Contributors:
* Neil Mackenzie - initial implementation
******************************************************************************/
package org.eclipse.emf.ecp.emfstore.internal.core.rap;
import org.eclipse.emf.ecp.core.rap.SessionProvider;
import org.eclipse.emf.ecp.emfstore.core.internal.ESWorkspaceProviderProvider;
import org.eclipse.emf.ecp.emfstore.core.internal.ESWorkspaceProviderProviderImpl;
import org.eclipse.rap.rwt.service.UISessionEvent;
import org.eclipse.rap.rwt.service.UISessionListener;
import org.osgi.framework.Bundle;
import org.osgi.framework.BundleContext;
import org.osgi.framework.FrameworkUtil;
import org.osgi.framework.ServiceFactory;
import org.osgi.framework.ServiceReference;
import org.osgi.framework.ServiceRegistration;
/**
* This is the factory for creating the ESWorkspaceProviderProvider service.
*
* @author neilmack
*
*/
public class ESWorkspaceProviderProviderFactory implements
ServiceFactory<ESWorkspaceProviderProvider>, UISessionListener {
/**
* The session provider used to retrieve the current session.
*/
private SessionProvider sessionProvider;
/**
* default constructor.
*/
public ESWorkspaceProviderProviderFactory() {
init();
}
/**
* initialise the factory.
*/
public void init() {
getSessionProvider();
}
/**
* this class retrieves the session provider. If the sessionProvider is
* not set yet then it is created and set.
*
* @return the session provider
*/
private SessionProvider getSessionProvider() {
if (sessionProvider == null) {
final BundleContext bundleContext = FrameworkUtil.getBundle(getClass()).getBundleContext();
final ServiceReference<SessionProvider> serviceReference = bundleContext
.getServiceReference(SessionProvider.class);
sessionProvider = bundleContext.getService(serviceReference);
}
return sessionProvider;
}
/**
* this method returns the ESWorkspaceProviderProvider
* service for the current session.
* It is called by the OSGI framework.
*
* @param bundle the OSGI bundle
* @param registration the service registration
*
* @return the service
*/
@Override
public final ESWorkspaceProviderProvider getService(final Bundle bundle,
final ServiceRegistration<ESWorkspaceProviderProvider> registration) {
ESWorkspaceProviderProvider esWorkspaceProviderProvider;
final String sessionId = getSessionProvider().getSessionId();
getSessionProvider().registerListenerWithSession(this);
esWorkspaceProviderProvider = new ESWorkspaceProviderProviderImpl(sessionId);
return esWorkspaceProviderProvider;
}
@Override
public void ungetService(final Bundle bundle,
final ServiceRegistration<ESWorkspaceProviderProvider> registration,
final ESWorkspaceProviderProvider service) {
// TODO Auto-generated method stub
}
/**
* {@inheritDoc}
*
* @see org.eclipse.rap.rwt.service.UISessionListener#beforeDestroy(org.eclipse.rap.rwt.service.UISessionEvent)
*/
@Override
public void beforeDestroy(UISessionEvent event) {
// TODO Auto-generated method stub
ESWorkspaceProviderProviderImpl esWorkspaceProviderProvider;
final String sessionId = getSessionProvider().getSessionId();
esWorkspaceProviderProvider = new ESWorkspaceProviderProviderImpl(sessionId);
esWorkspaceProviderProvider.removeESWorkspaceProviderInstance();
}
}