/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* JBoss, Home of Professional Open Source
* Copyright 2012 Red Hat Inc. and/or its affiliates and other 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.
*/
package org.hibernate.ogm.service.impl;
import org.hibernate.service.Service;
import org.hibernate.service.spi.BasicServiceInitiator;
import org.hibernate.service.spi.ServiceRegistryImplementor;
import java.util.Map;
/**
* @author Emmanuel Bernard <emmanuel@hibernate.org>
*/
public abstract class OptionalServiceInitiator<S extends Service> implements BasicServiceInitiator<S> {
@Override
public S initiateService(Map configurationValues, ServiceRegistryImplementor registry) {
if ( registry.getService( ConfigurationService.class ).isOgmOn() ) {
return buildServiceInstance(configurationValues, registry);
}
else {
BasicServiceInitiator<S> initiator = backupInitiator();
return initiator != null ? initiator.initiateService( configurationValues, registry ) : null;
}
}
protected abstract S buildServiceInstance(Map configurationValues, ServiceRegistryImplementor registry);
protected abstract BasicServiceInitiator<S> backupInitiator();
}