eu.planets_project.tb.impl.services.util.wee.WeeRemoteUtil.java Source code

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Here is the source code for eu.planets_project.tb.impl.services.util.wee.WeeRemoteUtil.java

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/*******************************************************************************
 * Copyright (c) 2007, 2010 The Planets Project Partners.
 *
 * All rights reserved. This program and the accompanying 
 * materials are made available under the terms of the 
 * Apache License, Version 2.0 which accompanies 
 * this distribution, and is available at 
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 *******************************************************************************/
package eu.planets_project.tb.impl.services.util.wee;

import javax.naming.Context;
import javax.naming.NamingException;
import javax.rmi.PortableRemoteObject;

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

import eu.planets_project.ifr.core.servreg.api.ServiceRegistry;
import eu.planets_project.ifr.core.servreg.api.ServiceRegistryFactory;
import eu.planets_project.ifr.core.wee.api.wsinterface.WeeService;
import eu.planets_project.ifr.core.wee.api.wsinterface.WftRegistryService;

/**
 * An util object for getting instances of the WeeService, WftRegistryService and ServiceRegistry remote objects
 * @author <a href="mailto:andrew.lindley@ait.ac.at">Andrew Lindley</a>
 * @since 24.09.2009
 *
 */
public class WeeRemoteUtil {

    private Log log = LogFactory.getLog(WeeRemoteUtil.class);
    private WftRegistryService wftRegImp;
    private WeeService weeService;
    private ServiceRegistry registry;
    private static WeeRemoteUtil weeRemote = null;

    public static synchronized WeeRemoteUtil getInstance() {
        if (weeRemote == null)
            weeRemote = new WeeRemoteUtil();
        return weeRemote;
    }

    private WeeRemoteUtil() {
        this.getWeeRemoteObjects();
    }

    public WeeService getWeeService() {
        return weeService;
    }

    public WftRegistryService getWeeRegistryService() {
        return wftRegImp;
    }

    public ServiceRegistry getServiceRegistry() {
        return registry;
    }

    private void getWeeRemoteObjects() {
        // get an instance of the Workflow Template Registry Service
        // and the Workflow Execution Service
        try {
            Context ctx = new javax.naming.InitialContext();
            wftRegImp = (WftRegistryService) PortableRemoteObject
                    .narrow(ctx.lookup("planets-project.eu/WftRegistryService/remote"), WftRegistryService.class);
            weeService = (WeeService) PortableRemoteObject
                    .narrow(ctx.lookup("planets-project.eu/WeeService/remote"), WeeService.class);
        } catch (NamingException e) {
            log.error("Could not retrieve the WeeService or WftRegistryService object" + e);
        }

        //get an instance of the ServiceRegistry
        registry = ServiceRegistryFactory.getServiceRegistry();
    }

}