/*
* 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.felix.scr.impl.manager;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import org.apache.felix.scr.impl.helper.SimpleLogger;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceObjects;
import org.osgi.framework.ServiceReference;
import org.osgi.service.log.LogService;
/**
* @version $Rev$ $Date$
*/
public class MultiplePrototypeRefPair<S, T> extends RefPair<S, T>
{
private final ServiceObjects<T> serviceObjects;
private final ConcurrentMap<ComponentContextImpl<S>, T> instances = new ConcurrentHashMap<ComponentContextImpl<S>, T>();
public MultiplePrototypeRefPair( BundleContext context, ServiceReference<T> ref )
{
super(ref);
this.serviceObjects = context.getServiceObjects(ref);
}
@Override
public ServiceObjects<T> getServiceObjects()
{
return serviceObjects;
}
@Override
public T getServiceObject(ComponentContextImpl<S> key)
{
return instances.get( key );
}
@Override
public boolean setServiceObject(ComponentContextImpl<S> key, T serviceObject)
{
return instances.putIfAbsent(key, serviceObject) == null;
}
@Override
public T unsetServiceObject(ComponentContextImpl<S> key)
{
return instances.get(key);
}
@Override
public String toString()
{
return "[MultiplePrototypeRefPair: ref: [" + getRef() + "] has service: [" + !instances.isEmpty() + "]]";
}
@Override
public boolean getServiceObject(ComponentContextImpl<S> key, BundleContext context,
SimpleLogger logger)
{
final T service = key.getComponentServiceObjectsHelper().getPrototypeRefInstance(this.getRef(), serviceObjects);
if ( service == null )
{
setFailed();
logger.log(
LogService.LOG_WARNING,
"Could not get service from serviceobjects for ref {0}", new Object[] {getRef()}, null );
return false;
}
if (!setServiceObject(key, service))
{
// Another thread got the service before, so unget our
serviceObjects.ungetService( service );
}
return true;
}
}