org/objectweb/proactive/core/body/future/FutureResult.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.future;

import java.io.Serializable;

import org.objectweb.proactive.core.exceptions.manager.ExceptionHandler;
import org.objectweb.proactive.core.exceptions.proxy.ProxyNonFunctionalException;

class ThisIsNotAnException extends Exception {
        public ThisIsNotAnException() {
                super("This is the call in the proxy");
        }
}

public class FutureResult implements Serializable {

    private Object result;

    private Throwable exception;

    private ProxyNonFunctionalException nfe;

    public FutureResult(Object result, Throwable exception,
        ProxyNonFunctionalException nfe) {
        this.result = result;
        this.exception = exception;
        this.nfe = nfe;
    }

    public Throwable getExceptionToRaise() {
        return exception;
    }

    public ProxyNonFunctionalException getNFE() {
        return nfe;
    }

    public Object getResult() {
        if (exception != null) {
            ExceptionHandler.throwException(exception);
        }

        return result;
    }

    public String toString() {
        String str = "[";
        if (nfe != null) {
            str += ("nfe:" + nfe.getClass().getName());
        } else if (exception != null) {
            str += ("ex:" + exception.getClass().getName());
        } else if (result != null) {
            str += result.getClass().getName();
        } else {
            str += "null";
        }

        return str + "]";
    }

    public void augmentException(StackTraceElement[] stackTrace) {
        Throwable cause = (exception == null) ? nfe : exception;
        if (cause != null && stackTrace != null) {
                while (cause.getCause() != null) {
                        cause = cause.getCause();
                }
                Exception origCause = new ThisIsNotAnException();
                origCause.setStackTrace(stackTrace);
                cause.initCause(origCause);
        }
    }
}

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