/*

  * 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.util;

 import java.lang.reflect.Type;

 import java.util.Set;

 import javax.enterprise.context.spi.CreationalContext;

 import javax.enterprise.inject.spi.Bean;

 import javax.enterprise.inject.spi.BeanManager;

 import javax.faces.context.ExternalContext;

 import org.apache.myfaces.webapp.AbstractFacesInitializer;

 /**

  * Lookup code for Contextual Instances.

  */

 public class CDIUtils

 {

     public static BeanManager getBeanManager(ExternalContext externalContext)

     {

         return (BeanManager) externalContext.getApplicationMap().get(

             AbstractFacesInitializer.CDI_BEAN_MANAGER_INSTANCE);

     }

     public static <T> T lookup(BeanManager bm, Class<T> clazz)

     {

         Set<Bean<?>> beans = bm.getBeans(clazz);

         return resolveInstance(bm, beans, clazz);

     }

     public static Object lookup(BeanManager bm, String name)

     {

         Set<Bean<?>> beans = bm.getBeans(name);

         return resolveInstance(bm, beans, Object.class);

     }

     private static <T> T resolveInstance(BeanManager bm, Set<Bean<?>> beans, Type type)

     {

         Bean<?> bean = bm.resolve(beans);

         CreationalContext<?> cc = bm.createCreationalContext(bean);

         T dao = (T) bm.getReference(bean, type, cc);

         return dao;

     }

 }