/*
* 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.inject;
import java.io.Serializable;
import java.lang.reflect.Member;
import java.util.ArrayList;
import java.util.List;
import javax.enterprise.context.spi.Contextual;
import javax.enterprise.inject.IllegalProductException;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.enterprise.inject.spi.Producer;
import org.apache.webbeans.component.AbstractProducerBean;
import org.apache.webbeans.config.WebBeansContext;
import org.apache.webbeans.container.BeanManagerImpl;
import org.apache.webbeans.container.InjectionResolver;
import org.apache.webbeans.context.creational.CreationalContextImpl;
import org.apache.webbeans.util.WebBeansUtil;
/**
* Abstract implementation of all components which are injectable.
*
* <p>
* Do actual injection via {@link AbstractInjectable#inject(InjectionPoint)}
* </p>
*
* @see InjectableField
* @see InjectableConstructor
* @see InjectableMethod
*/
public abstract class AbstractInjectable<T>
{
private Producer<?> owner;
protected final CreationalContextImpl<?> creationalContext;
protected AbstractInjectable(Producer<?> owner, CreationalContextImpl<?> creationalContext)
{
this.owner = owner;
this.creationalContext = creationalContext;
}
/**
* Gets the injected bean instance in its scoped context.
* @param injectionPoint injection point definition
* @return current bean instance in the resolved bean scope
*/
public T inject(InjectionPoint injectionPoint)
{
T injected;
BeanManagerImpl beanManager = creationalContext.getWebBeansContext().getBeanManagerImpl();
//Injected contextual beam
InjectionResolver instance = beanManager.getInjectionResolver();
Bean<?> injectedBean = instance.getInjectionPointBean(injectionPoint);
//Injection for dependent instance InjectionPoint fields
boolean dependentProducer = false;
if(WebBeansUtil.isDependent(injectedBean))
{
if(!injectionPoint.isTransient())
{
if(injectedBean instanceof AbstractProducerBean)
{
if((creationalContext.getBean() instanceof Bean) && beanManager.isPassivatingScope(((Bean<?>) creationalContext.getBean()).getScope()))
{
dependentProducer = true;
}
}
}
}
//Gets injectable reference for injected bean
injected = (T) beanManager.getInjectableReference(injectionPoint, creationalContext);
if (injected == null && beanManager.isNormalScope(injectedBean.getScope()))
{
throw new IllegalStateException("InjectableReference is 'null' for " + injectionPoint.toString());
}
/*X TODO see spec issue CDI-140 */
if(dependentProducer)
{
if(injected != null && !Serializable.class.isAssignableFrom(injected.getClass()))
{
throw new IllegalProductException("A producer method or field of scope @Dependent returns an unserializable object for injection " +
"into an injection point "+ injectionPoint +" that requires a passivation capable dependency");
}
}
return injected;
}
protected Contextual<?> getBean()
{
return creationalContext.getBean();
}
protected WebBeansContext getWebBeansContext()
{
return creationalContext.getWebBeansContext();
}
/**
* Returns injection points related with given member type of the bean.
* @param member java member
* @return injection points related with given member type
*/
protected List<InjectionPoint> getInjectionPoints(Member member)
{
return createInjectionPoints(owner, member);
}
protected static List<InjectionPoint> createInjectionPoints(Producer<?> owner, Member member)
{
List<InjectionPoint> injectionPoints = new ArrayList<InjectionPoint>();
for (InjectionPoint injectionPoint : owner.getInjectionPoints())
{
if (injectionPoint.getMember().equals(member))
{
injectionPoints.add(injectionPoint);
}
}
return injectionPoints;
}
}