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* 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.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.List;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.event.Event;
import javax.enterprise.inject.IllegalProductException;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.InjectionPoint;
import javax.inject.Provider;
import org.apache.webbeans.component.AbstractProducerBean;
import org.apache.webbeans.component.EventBean;
import org.apache.webbeans.component.InjectionPointBean;
import org.apache.webbeans.component.InstanceBean;
import org.apache.webbeans.component.OwbBean;
import org.apache.webbeans.container.BeanManagerImpl;
import org.apache.webbeans.container.InjectionResolver;
import org.apache.webbeans.context.creational.CreationalContextImpl;
import org.apache.webbeans.context.creational.DependentCreationalContext;
import org.apache.webbeans.util.ClassUtil;
import org.apache.webbeans.util.WebBeansUtil;
/**
* Abstract implementation of the {@link Injectable} contract.
*
* <p>
* Do actual injection via {@link AbstractInjectable#inject(InjectionPoint)}
* </p>
*
* @see InjectableField
* @see InjectableConstructor
* @see InjectableMethods
*/
public abstract class AbstractInjectable implements Injectable
{
/** Owner bean of the injection point*/
protected OwbBean<?> injectionOwnerBean;
/**Creational context instance that is passed to bean's create*/
protected CreationalContext<?> injectionOwnerCreationalContext;
/**Field, method or constructor injection*/
protected Member injectionMember;
//X TODO refactor. public static variables are utterly ugly
public static ThreadLocal<Object> instanceUnderInjection = new ThreadLocal<Object>();
//X TODO this MUST NOT be public!
public static ThreadLocal<List<DependentCreationalContext<Object>>> dependentInstanceOfProducerMethods =
new ThreadLocal<List<DependentCreationalContext<Object>>>();
/**
* Creates a new injectable.
*
* @param injectionOwnerBean owner bean
* @param injectionOwnerCreationalContext creational context instance
*/
protected AbstractInjectable(OwbBean<?> injectionOwnerBean, CreationalContext<?> injectionOwnerCreationalContext)
{
this.injectionOwnerBean = injectionOwnerBean;
this.injectionOwnerCreationalContext = injectionOwnerCreationalContext;
}
/**
* 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> Object inject(InjectionPoint injectionPoint)
{
Object injected;
BeanManagerImpl beanManager = injectionOwnerBean.getWebBeansContext().getBeanManagerImpl();
//Injected contextual beam
InjectionResolver instance = beanManager.getInjectionResolver();
Bean<?> injectedBean = instance.getInjectionPointBean(injectionPoint);
if(isInstanceProviderInjection(injectionPoint))
{
InstanceBean.local.set(injectionPoint);
}
else if(isEventProviderInjection(injectionPoint))
{
EventBean.local.set(injectionPoint);
}
boolean injectionPointBeanLocalSetOnStack = false;
try
{
//Injection for dependent instance InjectionPoint fields
boolean dependentProducer = false;
if(WebBeansUtil.isDependent(injectedBean))
{
if(!InjectionPoint.class.isAssignableFrom(ClassUtil.getClass(injectionPoint.getType())))
{
injectionPointBeanLocalSetOnStack = InjectionPointBean.setThreadLocal(injectionPoint);
}
if(!injectionPoint.isTransient())
{
if(injectedBean instanceof AbstractProducerBean)
{
if(injectionOwnerBean.isPassivationCapable())
{
dependentProducer = true;
}
}
}
}
//Gets injectable reference for injected bean
injected = beanManager.getInjectableReference(injectionPoint, injectionOwnerCreationalContext);
/*X TODO see spec issue CDI-140 */
if(dependentProducer)
{
if(injected != null && !Serializable.class.isAssignableFrom(injected.getClass()))
{
throw new IllegalProductException("If a producer method or field of scope @Dependent returns an serializable object for injection " +
"into an injection point "+ injectionPoint +" that requires a passivation capable dependency");
}
}
// add this dependent into bean dependent list
if (!WebBeansUtil.isStaticInjection(injectionPoint) && WebBeansUtil.isDependent(injectedBean))
{
if(instanceUnderInjection.get() != null)
{
((CreationalContextImpl<?>) injectionOwnerCreationalContext).addDependent(instanceUnderInjection.get(),injectedBean, injected);
}
}
}
finally
{
if (injectionPointBeanLocalSetOnStack)
{
InjectionPointBean.unsetThreadLocal();
}
}
return injected;
}
/**
* 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> getInjectedPoints(Member member)
{
List<InjectionPoint> injectedFields = injectionOwnerBean.getInjectionPoint(member);
return injectedFields;
}
private boolean isInstanceProviderInjection(InjectionPoint injectionPoint)
{
Type type = injectionPoint.getType();
if (type instanceof ParameterizedType)
{
ParameterizedType pt = (ParameterizedType) type;
Class<?> clazz = (Class<?>) pt.getRawType();
if(Provider.class.isAssignableFrom(clazz))
{
return true;
}
}
return false;
}
private boolean isEventProviderInjection(InjectionPoint injectionPoint)
{
Type type = injectionPoint.getType();
if (type instanceof ParameterizedType)
{
ParameterizedType pt = (ParameterizedType) type;
Class<?> clazz = (Class<?>) pt.getRawType();
if(clazz.isAssignableFrom(Event.class))
{
return true;
}
}
return false;
}
/**
* Gets the component.
*
* @return the component
*/
public OwbBean<?> getInjectionOwnerComponent()
{
return injectionOwnerBean;
}
}