org.jboss.dashboard.commons.cdi.CDIBeanLocator.java Source code

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Here is the source code for org.jboss.dashboard.commons.cdi.CDIBeanLocator.java

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/**
 * Copyright (C) 2012 JBoss Inc
 *
 * Licensed 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.jboss.dashboard.commons.cdi;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.BeanManager;
import javax.naming.InitialContext;
import javax.naming.NamingException;

public class CDIBeanLocator {

    /** The bean manager. */
    public static BeanManager beanManager;

    public static BeanManager getBeanManager() {
        if (beanManager != null)
            return beanManager;

        beanManager = lookupBeanManager("java:comp/BeanManager");
        if (beanManager == null)
            beanManager = lookupBeanManager("java:comp/env/BeanManager");
        return beanManager;
    }

    private static BeanManager lookupBeanManager(String jndiName) {
        try {
            InitialContext initialContext = new InitialContext();
            return (BeanManager) initialContext.lookup(jndiName);
        } catch (NamingException e) {
            // Ignore and return null.
            return null;
        }
    }

    public static Object getBeanByName(String name) {
        BeanManager bm = getBeanManager();
        Bean bean = bm.getBeans(name).iterator().next();
        CreationalContext ctx = bm.createCreationalContext(bean);
        Object o = bm.getReference(bean, bean.getBeanClass(), ctx);
        return o;
    }

    public static Object getBeanByType(Class type) {
        BeanManager bm = getBeanManager();
        Bean bean = bm.getBeans(type).iterator().next();
        CreationalContext ctx = bm.createCreationalContext(bean);
        Object o = bm.getReference(bean, bean.getBeanClass(), ctx);
        return o;
    }
}