/*
* Copyright 2009-2010 Rickard Öberg AB
*
* Licensed 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.qi4j.library.eventsourcing.application.factory;
import java.lang.reflect.Method;
import org.qi4j.api.common.AppliesTo;
import org.qi4j.api.concern.GenericConcern;
import org.qi4j.api.injection.scope.Service;
import org.qi4j.library.eventsourcing.application.api.ApplicationEvent;
/**
* Generate application event for event method
*/
@AppliesTo(ApplicationEventMethodFilter.class)
public class ApplicationEventCreationConcern
extends GenericConcern
{
@Service
ApplicationEventFactory eventFactory;
@Override
public Object invoke( Object proxy, Method method, Object[] args ) throws Throwable
{
if (args[0] == null)
{
// Create application event
ApplicationEvent event = eventFactory.createEvent( method.getName(), args );
args[0] = event;
}
return next.invoke( proxy, method, args );
}
}