org/objectweb/proactive/core/body/proxy/AbstractProxy.java

/* 
 * ################################################################
 * 
 * ProActive: The Java(TM) library for Parallel, Distributed, 
 *            Concurrent computing with Security and Mobility
 * 
 * Copyright (C) 1997-2007 INRIA/University of Nice-Sophia Antipolis
 * Contact: proactive@objectweb.org
 * 
 * This library 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 any later version.
 *  
 * This library 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 * USA
 *  
 *  Initial developer(s):               The ProActive Team
 *                        http://www.inria.fr/oasis/ProActive/contacts.html
 *  Contributor(s): 
 * 
 * ################################################################
 */ 
package org.objectweb.proactive.core.body.proxy;

//import java.util.HashMap;

import org.apache.log4j.Logger;
import org.objectweb.proactive.core.exceptions.NonFunctionalException;
import org.objectweb.proactive.core.exceptions.manager.NFEListener;
import org.objectweb.proactive.core.exceptions.manager.NFEListenerList;
import org.objectweb.proactive.core.exceptions.manager.NFEProducer;
import org.objectweb.proactive.core.mop.MethodCall;
import org.objectweb.proactive.core.mop.Proxy;
import org.objectweb.proactive.core.util.log.Loggers;
import org.objectweb.proactive.core.util.log.ProActiveLogger;


public abstract class AbstractProxy implements Proxy, java.io.Serializable,
    NFEProducer {
    // Get logger
    protected static Logger logger = ProActiveLogger.getLogger(Loggers.NFE);

    // table of handlers associated to proxy
    //private HashMap proxyLevel;

    //
    // -- CONSTRUCTORS -----------------------------------------------
    //
    public AbstractProxy() {
    }

    //
    // -- METHODS ----------------------------------------------------
    //

    protected static boolean isAsynchronousCall(MethodCall mc) {
        return mc.isAsynchronousWayCall();
    }

    protected static boolean isOneWayCall(MethodCall mc) {
        return mc.isOneWayCall();
    }

    //  /**
    //   * Get information about the handlerizable object
    //   * @return information about the handlerizable object
    //   */
    //  public String getHandlerizableInfo()  throws java.io.IOException {
    //          return "PROXY of CLASS ["+ this.getClass()  +"]";
    //  }
    //  
    //    /** Give a reference to a local map of handlers
    //    * @return A reference to a map of handlers
    //    */
    //    public HashMap getHandlersLevel() throws java.io.IOException {
    //        return proxyLevel;
    //    }
    //
    //  /** 
    //   * Clear the local map of handlers
    //   */
    //  public void clearHandlersLevel() throws java.io.IOException {
    //           proxyLevel.clear();
    //  }
    //
    //    /** Set a new handler within the table of the Handlerizable Object
    //     * @param handler A handler associated with a class of non functional exception.
    //     * @param exception A class of non functional exception. It is a subclass of <code>NonFunctionalException</code>.
    //     */
    //    public void setExceptionHandler(Handler handler, Class exception)
    //        throws java.io.IOException {
    //        // add handler to proxy level
    //        if (proxyLevel == null) {
    //            proxyLevel = new HashMap();
    //        }
    //        proxyLevel.put(exception, handler);
    //    }
    //
    //    /** Remove a handler from the table of the Handlerizable Object
    //     * @param exception A class of non functional exception. It is a subclass of <code>NonFunctionalException</code>.
    //     * @return The removed handler or null
    //     */
    //    public Handler unsetExceptionHandler(Class exception)
    //        throws java.io.IOException {
    //        // remove handler from proxy level
    //        if (proxyLevel != null) {
    //            Handler handler = (Handler) proxyLevel.remove(exception);
    //            return handler;
    //        } else {
    //            if (logger.isDebugEnabled()) {
    //                logger.debug("[NFE_WARNING] No handler for [" +
    //                    exception.getName() + "] can be removed from PROXY level");
    //            }
    //            return null;
    //        }
    //    }
    // NFEProducer implementation
    private NFEListenerList nfeListeners = null;

    public void addNFEListener(NFEListener listener) {
        if (nfeListeners == null) {
            nfeListeners = new NFEListenerList();
        }
        nfeListeners.addNFEListener(listener);
    }

    public void removeNFEListener(NFEListener listener) {
        if (nfeListeners != null) {
            nfeListeners.removeNFEListener(listener);
        }
    }

    public int fireNFE(NonFunctionalException e) {
        if (nfeListeners != null) {
            return nfeListeners.fireNFE(e);
        }
        return 0;
    }
}

---