/*******************************************************************************
* Copyright (c) 2012-2017 Codenvy, S.A.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Codenvy, S.A. - initial API and implementation
*******************************************************************************/
package org.eclipse.che.core.db.jpa.eclipselink;
import com.google.inject.Inject;
import com.google.inject.Injector;
import org.eclipse.persistence.internal.sessions.AbstractSession;
import org.eclipse.persistence.internal.sessions.cdi.EntityListenerInjectionManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.naming.NamingException;
/**
* Allows to use dependency injection in entity listeners.
*
* <p>Example:
* <pre>
* class WorkspaceEntityListener {
*
* @Inject EventBus bus; <- EventBus will be injected by Guice
*
* @PreRemove
* public void preRemove(Workspace workspace) {
* bus.post(new BeforeWorkspaceRemovedEvent(workspace));
* }
* }
*
* @Entity
* @EntityListeners(WorkspaceEntityListener.class)
* class Workspace {
* // ...
* }
* </pre>
*
* @author Yevhenii Voevodin
*/
public class GuiceEntityListenerInjectionManager implements EntityListenerInjectionManager {
private static final Logger LOG = LoggerFactory.getLogger(GuiceEntityListenerInjectionManager.class);
@Inject
private Injector injector;
@Override
public Object createEntityListenerAndInjectDependancies(Class entityListenerClass) throws NamingException {
try {
return injector.getInstance(entityListenerClass);
} catch (RuntimeException x) {
LOG.error(x.getLocalizedMessage(), x);
throw new NamingException(x.getLocalizedMessage());
}
}
@Override
public void cleanUp(AbstractSession session) {
// EntityListener objects are managed by Guice, nothing to cleanup
}
}