SeamAsyncPublisher.java

/**
 *   GRANITE DATA SERVICES
 *   Copyright (C) 2006-2015 GRANITE DATA SERVICES S.A.S.
 *
 *   This file is part of the Granite Data Services Platform.
 *
 *   Granite Data Services is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or (at your option) any later version.
 *
 *   Granite Data Services 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 Lesser
 *   General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
 *   USA, or see <http://www.gnu.org/licenses/>.
 */
package org.granite.tide.seam.async;

import static org.jboss.seam.annotations.Install.FRAMEWORK;

import org.granite.gravity.Gravity;
import org.granite.gravity.GravityManager;
import org.granite.tide.async.AsyncPublisher;
import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.AutoCreate;
import org.jboss.seam.annotations.Install;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.intercept.BypassInterceptors;
import org.jboss.seam.contexts.ServletLifecycle;

import flex.messaging.messages.AsyncMessage;


/**
 * Async publisher using Gravity to send messages to the client
 * 
 * @author William DRAI
 */
@Name("org.granite.tide.seam.async.publisher")
@Install(precedence=FRAMEWORK, classDependencies={"org.granite.gravity.Gravity"})
@Scope(ScopeType.STATELESS)
@BypassInterceptors
@AutoCreate
public class SeamAsyncPublisher implements AsyncPublisher {
    
    public static final String DESTINATION_NAME = "seamAsync";
    
    private Gravity getGravity() {
        return GravityManager.getGravity(ServletLifecycle.getServletContext());
    }

    public void publishMessage(String sessionId, Object body) {
    	AsyncMessage message = new AsyncMessage();
        message.setHeader(AsyncMessage.SUBTOPIC_HEADER, "tide.events." + sessionId);
        message.setDestination(DESTINATION_NAME);
        message.setBody(body);
        
        getGravity().publishMessage(message);
    }
}