001/**
002 *   GRANITE DATA SERVICES
003 *   Copyright (C) 2006-2013 GRANITE DATA SERVICES S.A.S.
004 *
005 *   This file is part of the Granite Data Services Platform.
006 *
007 *   Granite Data Services is free software; you can redistribute it and/or
008 *   modify it under the terms of the GNU Lesser General Public
009 *   License as published by the Free Software Foundation; either
010 *   version 2.1 of the License, or (at your option) any later version.
011 *
012 *   Granite Data Services is distributed in the hope that it will be useful,
013 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
014 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
015 *   General Public License for more details.
016 *
017 *   You should have received a copy of the GNU Lesser General Public
018 *   License along with this library; if not, write to the Free Software
019 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
020 *   USA, or see <http://www.gnu.org/licenses/>.
021 */
022package org.granite.messaging.service;
023
024import java.util.HashMap;
025import java.util.Map;
026
027import org.granite.config.flex.Destination;
028import org.granite.logging.Logger;
029import org.granite.util.TypeUtil;
030
031import flex.messaging.messages.RemotingMessage;
032
033/**
034 * @author Franck WOLFF
035 */
036public class SimpleServiceInvoker extends ServiceInvoker<SimpleServiceFactory> {
037
038    private static final Logger log = Logger.getLogger(SimpleServiceInvoker.class);
039
040    private final Map<String, Object> sources;
041
042    protected SimpleServiceInvoker(Destination destination, SimpleServiceFactory factory) throws ServiceException {
043        super(destination, factory);
044
045        String className = destination.getProperties().get("source");
046        if (className == null)
047            throw new ServiceException("No source property for destination: " + destination);
048        className = className.trim();
049
050        log.debug(">> New SimpleServiceInvoker constructing new: %s", className);
051
052        // Invokee class set at runtime (RemoteObject.source).
053        if ("*".equals(className))
054            sources = new HashMap<String, Object>();
055        else {
056            try {
057                if (destination.getScannedClass() != null)
058                        this.invokee = destination.getScannedClass().newInstance();
059                else
060                        this.invokee = TypeUtil.newInstance(className);
061            } catch (Exception e) {
062                throw new ServiceException("Invalid source property for destination: " + destination, e);
063            }
064            sources = null;
065        }
066    }
067
068    @Override
069    protected Object adjustInvokee(RemotingMessage request, String methodName, Object[] args) throws ServiceException {
070
071        if (sources == null)
072            return super.adjustInvokee(request, methodName, args);
073
074        String className = request.getSource();
075        if (className == null)
076            throw new ServiceException("No source property in request for '*' destination: " + destination);
077        className = className.trim();
078
079        Object invokee = null;
080
081        synchronized (sources) {
082            invokee = sources.get(className);
083            if (invokee == null) {
084                try {
085                    invokee = TypeUtil.newInstance(className);
086                } catch (Exception e) {
087                    throw new ServiceException("Invalid source property in request for '*' destination: " + destination, e);
088                }
089                sources.put(className, invokee);
090            }
091        }
092
093        return invokee;
094    }
095}