/*
* 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.Iterator;
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;
/**
*
* @author Leonardo Uribe
*/
public class CDIUtils
{
public static BeanManager getBeanManager(ExternalContext externalContext)
{
return (BeanManager) externalContext.getApplicationMap().get(
AbstractFacesInitializer.CDI_BEAN_MANAGER_INSTANCE);
}
/*
public static BeanManager getBeanManagerFromJNDI()
{
try
{
// in an application server
return (BeanManager) InitialContext.doLookup("java:comp/BeanManager");
}
catch (NamingException e)
{
// silently ignore
}
try
{
// in a servlet container
return (BeanManager) InitialContext.doLookup("java:comp/env/BeanManager");
}
catch (NamingException e)
{
// silently ignore
}
return null;
}*/
@SuppressWarnings("unchecked")
public static <T> T lookup(BeanManager bm, Class<T> clazz)
{
Iterator<Bean< ?>> iter = bm.getBeans(clazz).iterator();
if (!iter.hasNext())
{
throw new IllegalStateException(
"CDI BeanManager cannot find an instance of requested type " +
clazz.getName());
}
Bean<T> bean = (Bean<T>) iter.next();
CreationalContext<T> ctx = bm.createCreationalContext(bean);
T dao = (T) bm.getReference(bean, clazz, ctx);
return dao;
}
@SuppressWarnings(
{
"unchecked", "rawtypes"
})
public static Object lookup(BeanManager bm, String name)
{
Iterator<Bean< ?>> iter = bm.getBeans(name).iterator();
if (!iter.hasNext())
{
throw new IllegalStateException(
"CDI BeanManager cannot find an instance of requested type '" + name + "'");
}
Bean bean = iter.next();
CreationalContext ctx = bm.createCreationalContext(bean);
Type type = (Type) bean.getTypes().iterator().next();
return bm.getReference(bean, type, ctx);
}
}