001/*
002  GRANITE DATA SERVICES
003  Copyright (C) 2011 GRANITE DATA SERVICES S.A.S.
004
005  This file is part of Granite Data Services.
006
007  Granite Data Services is free software; you can redistribute it and/or modify
008  it under the terms of the GNU Library General Public License as published by
009  the Free Software Foundation; either version 2 of the License, or (at your
010  option) any later version.
011
012  Granite Data Services is distributed in the hope that it will be useful, but
013  WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014  FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015  for more details.
016
017  You should have received a copy of the GNU Library General Public License
018  along with this library; if not, see <http://www.gnu.org/licenses/>.
019*/
020
021package org.granite.messaging.service;
022
023import java.util.HashMap;
024import java.util.Map;
025
026import org.granite.config.flex.Destination;
027import org.granite.logging.Logger;
028import org.granite.util.TypeUtil;
029
030import flex.messaging.messages.RemotingMessage;
031
032/**
033 * @author Franck WOLFF
034 */
035public class SimpleServiceInvoker extends ServiceInvoker<SimpleServiceFactory> {
036
037    private static final Logger log = Logger.getLogger(SimpleServiceInvoker.class);
038
039    private final Map<String, Object> sources;
040
041    protected SimpleServiceInvoker(Destination destination, SimpleServiceFactory factory) throws ServiceException {
042        super(destination, factory);
043
044        String className = destination.getProperties().get("source");
045        if (className == null)
046            throw new ServiceException("No source property for destination: " + destination);
047        className = className.trim();
048
049        log.debug(">> New SimpleServiceInvoker constructing new: %s", className);
050
051        // Invokee class set at runtime (RemoteObject.source).
052        if ("*".equals(className))
053            sources = new HashMap<String, Object>();
054        else {
055            try {
056                if (destination.getScannedClass() != null)
057                        this.invokee = destination.getScannedClass().newInstance();
058                else
059                        this.invokee = TypeUtil.newInstance(className);
060            } catch (Exception e) {
061                throw new ServiceException("Invalid source property for destination: " + destination, e);
062            }
063            sources = null;
064        }
065    }
066
067    @Override
068    protected Object adjustInvokee(RemotingMessage request, String methodName, Object[] args) throws ServiceException {
069
070        if (sources == null)
071            return super.adjustInvokee(request, methodName, args);
072
073        String className = request.getSource();
074        if (className == null)
075            throw new ServiceException("No source property in request for '*' destination: " + destination);
076        className = className.trim();
077
078        Object invokee = null;
079
080        synchronized (sources) {
081            invokee = sources.get(className);
082            if (invokee == null) {
083                try {
084                    invokee = TypeUtil.newInstance(className);
085                } catch (Exception e) {
086                    throw new ServiceException("Invalid source property in request for '*' destination: " + destination, e);
087                }
088                sources.put(className, invokee);
089            }
090        }
091
092        return invokee;
093    }
094}