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/*
 * Copyright (c) 1998-2010, Peter T Mount

 * All rights reserved.
 *
 * 
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 3 of the License, or
 *   (at your option) any later version.
 * 
 *
 * 
 *   This program is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *   GNU General Public License for more details.
 * 
 *
 * 
 *   You should have received a copy of the GNU General Public License along
 *   with this program.  If not, see .
 * 
 *
 * 
 *        GNU GENERAL PUBLIC LICENSE - CLASSPATH EXCEPTION
 * 
 *
 * 
 *   Linking this library statically or dynamically with other modules
 *   is making a combined work based on this library. Thus, the terms
 *   and conditions of the GNU General Public License cover the whole
 *   combination.
 * 
 *
 * 
 *   As a special exception, the copyright holders of this library give
 *   you permission to link this library with independent modules to
 *   produce an executable, regardless of the license terms of these
 *   independent modules, and to copy and distribute the resulting
 *   executable under terms of your choice, provided that you also meet,
 *   for each linked independent module, the terms and conditions of the
 *   license of that module.
 * 
 *
 * 
 *   An independent module is a module which is either not derived from or based
 *   on this library, or a module who's classes extend those within this library
 *   as part of the implementation of the library.
 * 
 *
 * 
 *   If you modify this library, you may extend this exception to your version
 *   of the library, but you are not obligated to do so. If you do not wish to
 *   do so, delete this exception statement from your version.
 * 
 */
package uk.org.retep.kernel.naming;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import javax.naming.NamingException;
import uk.org.retep.logging.Log;
import uk.org.retep.logging.LogFactory;
import uk.org.retep.util.j2ee.JNDIUtils;
import uk.org.retep.util.string.StringUtils;

/**
 *
 * @author peter
 */
public class JNDIBinder
{

    private final Log log = LogFactory.getLog( getClass() );
    private String jndiName;
    private Object value;

    public String getJndiName()
    {
        return jndiName;
    }

    public void setJndiName( String jndiName )
    {
        this.jndiName = jndiName;
    }

    public Object getValue()
    {
        return value;
    }

    public void setValue( Object value )
    {
        this.value = value;
    }

    @PostConstruct
    public void start()
            throws NamingException
    {
        if( StringUtils.isStringEmpty( jndiName ) )
        {
            throw new NullPointerException( "No jndiName defined" );
        }

        if( value == null )
        {
            throw new NullPointerException( "No bean available to bind to " + jndiName );
        }

        JNDIUtils.bind( jndiName, value );
        log.debug( "Bound %s", jndiName, value.getClass().getName() );
    }

    @PreDestroy
    public void stop()
    {
        if( StringUtils.isStringNotEmpty( jndiName ) && value != null )
        {
            try
            {
                JNDIUtils.unbind( jndiName );
                log.debug( "unbound %s", jndiName );
            }
            catch( Exception ex )
            {
            // ignore
            }
        }
    }
}