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.spring;
022
023import javax.servlet.ServletContext;
024
025import org.granite.config.flex.Destination;
026import org.granite.context.GraniteContext;
027import org.granite.messaging.service.ServiceException;
028import org.granite.messaging.service.ServiceInvoker;
029import org.granite.messaging.service.SimpleServiceFactory;
030import org.granite.messaging.webapp.HttpGraniteContext;
031import org.granite.util.XMap;
032import org.springframework.beans.BeansException;
033import org.springframework.beans.factory.NoSuchBeanDefinitionException;
034import org.springframework.context.ApplicationContext;
035import org.springframework.web.context.support.WebApplicationContextUtils;
036
037import flex.messaging.messages.RemotingMessage;
038
039/**
040 * @author Igor SAZHNEV
041 */
042public class SpringServiceFactory extends SimpleServiceFactory {
043
044    private ApplicationContext springContext = null;
045
046    @Override
047    public void configure(XMap properties)throws ServiceException {
048        super.configure(properties);
049
050        // getting spring context from container
051        GraniteContext context = GraniteContext.getCurrentInstance();
052        ServletContext sc = ((HttpGraniteContext)context).getServletContext();
053        springContext = WebApplicationContextUtils.getRequiredWebApplicationContext(sc);
054    }
055
056    @Override
057    public ServiceInvoker<?> getServiceInstance(RemotingMessage request) throws ServiceException {
058        String messageType = request.getClass().getName();
059        String destinationId = request.getDestination();
060
061        GraniteContext context = GraniteContext.getCurrentInstance();
062        Destination destination = context.getServicesConfig().findDestinationById(messageType, destinationId);
063        if (destination == null)
064            throw new ServiceException("No matching destination: " + destinationId);
065        
066        // all we need is to get bean name
067        // Scopes are configured in Spring config file, not in destination
068        String beanName = destination.getProperties().get("source");
069        if (beanName == null)
070                beanName = destination.getId();
071        
072        try {
073            Object bean = springContext.getBean(beanName);
074            return createSpringServiceInvoker(destination, this, bean);
075        } 
076        catch (NoSuchBeanDefinitionException nexc) {
077            String msg = "Spring service named '" + beanName + "' does not exist.";
078            ServiceException e = new ServiceException(msg, nexc);
079            throw e;
080        } 
081        catch (BeansException bexc) {
082            String msg = "Unable to create Spring service named '" + beanName + "'";
083            ServiceException e = new ServiceException(msg, bexc);
084            throw e;
085        }
086    }
087
088    @Override
089    public String toString() {
090        return toString("\n  springContext: " + springContext);
091    }
092    
093    protected ServiceInvoker<?> createSpringServiceInvoker(Destination destination, SpringServiceFactory factory, Object bean) {
094        return new SpringServiceInvoker(destination, this, bean);
095    }
096}