DataDispatcher.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.data;


/**
 *  Interface for data update dispatchers.
 *  The dispatch is a three step process :
 * 
 * 	<ul>
 *  <li>Initialization in the constructor (specific for each implementation), at initialization of <code>DataContext</code></li>
 *  <li><code>observe()</code> builds the server selector depending on the data that are processed</li>
 *  <li><code>publish()</code> handles the actual publishing</li>
 *  </ul>
 * 
 *  @see DataContext
 * 
 *  @author William Drai
 */
public interface DataDispatcher {
	
	public static final String TIDE_DATA_SUBTOPIC = "tideDataTopic";
	public static final String GDS_SESSION_ID = "GDSSessionID";
	public static final String TIDE_DATA_TYPE_KEY = "type";
	public static final String TIDE_DATA_TYPE_VALUE = "DATA";
	public static final String SERVER_DISPATCHER_GDS_SESSION_ID = "__GDS_SERVER_DISPATCHER__";

	public void observe();
	
	public void publish(Object[][] dataUpdates);
}