/*

 * 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.naming.factory;

import org.apache.naming.EjbRef;

import javax.naming.Context;

import javax.naming.InitialContext;

import javax.naming.Name;

import javax.naming.Reference;

import javax.naming.RefAddr;

import javax.naming.spi.ObjectFactory;

import java.util.Hashtable;

import java.util.Properties;

/**

 * Object factory for EJBs.

 * 

 * @author Jacek Laskowski

 * @author Remy Maucherat

 */

public class OpenEjbFactory implements ObjectFactory {

    // -------------------------------------------------------------- Constants

    protected static final String DEFAULT_OPENEJB_FACTORY = 

        "org.openejb.client.LocalInitialContextFactory";

    // -------------------------------------------------- ObjectFactory Methods

    /**

     * Crete a new EJB instance using OpenEJB.

     * 

     * @param obj The reference object describing the DataSource

     */

    public Object getObjectInstance(Object obj, Name name, Context nameCtx,

                                    Hashtable environment)

        throws Exception {

        Object beanObj = null;

        if (obj instanceof EjbRef) {

            Reference ref = (Reference) obj;

            String factory = DEFAULT_OPENEJB_FACTORY;

            RefAddr factoryRefAddr = ref.get("openejb.factory");

            if (factoryRefAddr != null) {

                // Retrieving the OpenEJB factory

                factory = factoryRefAddr.getContent().toString();

            }

            Properties env = new Properties();

            env.put(Context.INITIAL_CONTEXT_FACTORY, factory);

            RefAddr linkRefAddr = ref.get("openejb.link");

            if (linkRefAddr != null) {

                String ejbLink = linkRefAddr.getContent().toString();

                beanObj = (new InitialContext(env)).lookup(ejbLink);

            }

        }

        return beanObj;

    }

}