/*
* Copyright 2015 Red Hat, Inc. and/or its affiliates.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
*
* 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.jbpm.executor.cdi;
import java.lang.annotation.Annotation;
import java.util.Set;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import org.kie.api.executor.CommandContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class CDIUtils {
private static final Logger logger = LoggerFactory.getLogger(CDIUtils.class);
private static final String[] BEAN_MANAGER_NAMES = {"java:comp/BeanManager", "java:comp/env/BeanManager", System.getProperty("org.jbpm.cdi.bm")};
public static BeanManager lookUpBeanManager(CommandContext ctx) {
BeanManager beanManager = null;
for (String jndiName : BEAN_MANAGER_NAMES) {
if (jndiName == null) {
continue;
}
try {
beanManager = InitialContext.doLookup(jndiName);
logger.debug("Found bean manager under {} jndi name", jndiName);
break;
} catch (NamingException e) {
logger.debug("No bean manager under {} jndi name", jndiName);
}
}
if (beanManager == null) {
beanManager = (BeanManager) ctx.getData("BeanManager");
}
return beanManager;
}
@SuppressWarnings("unchecked")
public static <T> T createBean(Class<T> beanType, BeanManager beanManager, Annotation... bindings) throws Exception {
Set<Bean<?>> beans = beanManager.getBeans( beanType, bindings );
if (beans != null && !beans.isEmpty()) {
Bean<T> bean = (Bean<T>) beans.iterator().next();
return (T) beanManager.getReference(bean, beanType, beanManager.createCreationalContext(bean));
}
return null;
}
}