/*
* 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.webbeans.event;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.HashSet;
import java.util.Set;
import javax.enterprise.event.Event;
import javax.enterprise.util.TypeLiteral;
import org.apache.webbeans.config.WebBeansContext;
import org.apache.webbeans.util.ClassUtil;
import org.apache.webbeans.util.OwbCustomObjectInputStream;
import org.apache.webbeans.util.WebBeansUtil;
/**
* Event implementation.
*
* @param <T> event type
* @see Event
*/
public class EventImpl<T> implements Event<T>, Serializable
{
private static final long serialVersionUID = -9035218380365451350L;
/**Event binding types*/
private Annotation[] injectedBindings;
/**Event types*/
private Type eventType;
private transient WebBeansContext webBeansContext;
/**
* Creates a new event.
*
* @param injectedBindings event bindings
* @param eventType event type
* @param webBeansContext
*/
public EventImpl(Annotation[] injectedBindings, Type eventType, WebBeansContext webBeansContext)
{
this.webBeansContext = webBeansContext;
this.injectedBindings = injectedBindings;
this.eventType = eventType;
}
/**
* Fires event with given event object.
*/
public void fire(T event)
{
webBeansContext.getBeanManagerImpl().fireEvent(event, injectedBindings);
}
/**
* Returns total binding annotations.
*
* @param annotations new annotations
* @return total binding annotations
*/
private Annotation[] getEventBindings(Annotation... annotations)
{
webBeansContext.getAnnotationManager().checkQualifierConditions(annotations);
Set<Annotation> eventBindings = new HashSet<Annotation>();
for(Annotation ann : injectedBindings)
{
eventBindings.add(ann);
}
Annotation[] anns = null;
for (Annotation binding : annotations)
{
eventBindings.add(binding);
}
anns = new Annotation[eventBindings.size()];
anns = eventBindings.toArray(anns);
return anns;
}
/**
* {@inheritDoc}
*/
public Event<T> select(Annotation... bindings)
{
Event<T> sub = new EventImpl<T>(getEventBindings(bindings), eventType, webBeansContext);
return sub;
}
/**
* {@inheritDoc}
*/
public <U extends T> Event<U> select(Class<U> subtype, Annotation... bindings)
{
if(ClassUtil.isDefinitionContainsTypeVariables(subtype))
{
throw new IllegalArgumentException("Class : " + subtype + " cannot contain type variable");
}
Type sub = subtype;
if(sub == null)
{
sub = eventType;
}
Event<U> subEvent = new EventImpl<U>(getEventBindings(bindings),sub, webBeansContext);
return subEvent;
}
/**
* {@inheritDoc}
*/
public <U extends T> Event<U> select(TypeLiteral<U> subtype, Annotation... bindings)
{
return select(subtype.getRawType(), bindings);
}
private void writeObject(java.io.ObjectOutputStream op) throws IOException
{
ObjectOutputStream oos = new ObjectOutputStream(op);
oos.writeObject(eventType);
oos.writeObject(injectedBindings);
oos.flush();
}
private void readObject(java.io.ObjectInputStream in) throws IOException, ClassNotFoundException
{
final ObjectInputStream inputStream = new OwbCustomObjectInputStream(in, WebBeansUtil.getCurrentClassLoader());
eventType = (Type)inputStream.readObject();
injectedBindings = (Annotation[])inputStream.readObject();
webBeansContext = WebBeansContext.currentInstance();
}
}