Package org.apache.webbeans.portable.creation

Source Code of org.apache.webbeans.portable.creation.InjectionTargetProducer

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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
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* specific language governing permissions and limitations
* under the License.
*/
package org.apache.webbeans.portable.creation;

import javax.enterprise.context.Dependent;
import javax.enterprise.context.spi.Contextual;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.spi.InjectionTarget;

import org.apache.webbeans.component.EnterpriseBeanMarker;
import org.apache.webbeans.component.InjectionTargetBean;
import org.apache.webbeans.context.creational.CreationalContextImpl;
import org.apache.webbeans.inject.AbstractInjectable;
import org.apache.webbeans.proxy.ProxyFactory;

/**
* InjectionTargetProducer implementation.
*
* @version $Rev: 1417338 $ $Date: 2012-12-05 11:17:24 +0100 (Wed, 05 Dec 2012) $
*
* @param <T> bean type info
*/
@SuppressWarnings("unchecked")
public class InjectionTargetProducer<T> extends AbstractProducer<T> implements InjectionTarget<T>
{
    /**
     * Creates a new injection target producer.
     * @param bean injection target bean
     */
    public InjectionTargetProducer(InjectionTargetBean<T> bean)
    {
        super(bean);
    }
       
    /**
     * {@inheritDoc}
     */
    public void inject(T instance, CreationalContext<T> ctx)
    {
        if(!(ctx instanceof CreationalContextImpl))
        {
            ctx = bean.getWebBeansContext().getCreationalContextFactory().wrappedCreationalContext(ctx, bean);
        }
       
        Object oldInstanceUnderInjection = AbstractInjectable.instanceUnderInjection.get();
        boolean isInjectionToAnotherBean = false;
        try
        {
            Contextual<?> contextual = null;
            if(ctx instanceof CreationalContextImpl)
            {
                contextual = ((CreationalContextImpl)ctx).getBean();
                isInjectionToAnotherBean = contextual == getBean(InjectionTargetBean.class) ? false : true;
            }
           
            if(!isInjectionToAnotherBean)
            {
                AbstractInjectable.instanceUnderInjection.set(instance);  
            }
                       
            InjectionTargetBean<T> bean = getBean(InjectionTargetBean.class);
           
            if(!(bean instanceof EnterpriseBeanMarker))
            {
                //GE: Currently we have a proxy for DependentScoped beans
                //that has an interceptor or decroator. This means that
                //injection will be occured on Proxy instances that are
                //not correct. Injection must be on actual dependent
                //instance,so not necessary to inject on proxy
                final ProxyFactory proxyFactory = this.bean.getWebBeansContext().getProxyFactory();
                if(bean.getScope() == Dependent.class && proxyFactory.isProxyInstance(instance))
                {
                    return;
                }
               
                bean.injectResources(instance, ctx);
                bean.injectSuperFields(instance, ctx);
                bean.injectSuperMethods(instance, ctx);
                bean.injectFields(instance, ctx);
                bean.injectMethods(instance, ctx);           
            }                   
        }
        finally
        {
            if(oldInstanceUnderInjection != null)
            {
                AbstractInjectable.instanceUnderInjection.set(oldInstanceUnderInjection);  
            }
            else
            {
                AbstractInjectable.instanceUnderInjection.set(null);
                AbstractInjectable.instanceUnderInjection.remove();
            }
        }
       
    }
   
    /**
     * {@inheritDoc}
     */
    public void postConstruct(T instance)
    {
        InjectionTargetBean<T> bean = getBean(InjectionTargetBean.class);   
        if(!(bean instanceof EnterpriseBeanMarker))
        {
            bean.postConstruct(instance, getCreationalContext());
        }
    }

    /**
     * {@inheritDoc}
     */
    public void preDestroy(T instance)
    {
        InjectionTargetBean<T> bean = getBean(InjectionTargetBean.class);
        bean.destroyCreatedInstance(instance, getCreationalContext());
    }

}
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