/*
    * 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.myfaces.cdi.impl;
  
  import org.apache.myfaces.cdi.util.CDIUtils;
  import org.apache.myfaces.spi.InjectionProvider;
  import org.apache.myfaces.spi.InjectionProviderException;
  
  import javax.enterprise.context.spi.CreationalContext;
  import javax.enterprise.inject.spi.AnnotatedType;
  import javax.enterprise.inject.spi.BeanManager;
  import javax.enterprise.inject.spi.InjectionTarget;
  import javax.faces.context.ExternalContext;
  
  /**
   *
   * @author Leonardo Uribe
   */
  public class CDIAnnotationInjectionProvider extends InjectionProvider
  {
      private BeanManager beanManager;
  
      public CDIAnnotationInjectionProvider(ExternalContext externalContext)
      {
          beanManager = CDIUtils.getBeanManager(externalContext);
      }
  
      @Override
      public Object inject(Object instance) throws InjectionProviderException
      {
          AnnotatedType annoType = beanManager.createAnnotatedType(instance.getClass());
          InjectionTarget target = beanManager.createInjectionTarget(annoType);
          CreationalContext<?> creationalContext =  beanManager.createCreationalContext(null);
  
          target.inject(instance, creationalContext);
  
          return creationalContext;
      }
  
      @Override
      public void postConstruct(Object instance, Object creationMetaData) throws InjectionProviderException
      {
          AnnotatedType annoType = beanManager.createAnnotatedType(instance.getClass());
          InjectionTarget target = beanManager.createInjectionTarget(annoType);
          target.postConstruct(instance);
      }
  
      @Override
      public void preDestroy(Object instance, Object creationMetaData) throws InjectionProviderException
      {
          if (creationMetaData instanceof CreationalContext)
          {
              AnnotatedType annoType = beanManager.createAnnotatedType(instance.getClass());
              InjectionTarget target = beanManager.createInjectionTarget(annoType);
              target.preDestroy(instance);
  
              ((CreationalContext)creationMetaData).release();
          }
      }
  }