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A remote dynamic Command pattern with GWT and LinkSet

, 19 Jan 2011 LGPL3
Command pattern is a very useful solution, but it causes some problems when used in a distributed environment.
// -----------------------------------------------------------------------------
//    LinkSet
//    Copyright: 2010 Lukasz Bownik (lukasz.bownik@gmail.com)
//
//    This file is part of LinkSet.
//
//    LinkSet is free software; you can redistribute it and/or modify
//    it under the terms of the Lesser GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    LinkSet 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
//    Lesser GNU General Public License for more details.
//
//    You should have received a copy of the Lesser GNU General Public License
//    along with LinkSet; if not, write to the Free Software
//    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
// -----------------------------------------------------------------------------
package org.linkset;

/*******************************************************************************
 * The interface thar enables managing listeners
 *
 * @author Lukasz Bownik (lukasz.bownik@gmail.com)
 ******************************************************************************/
public interface ListenerManager {

    /***************************************************************************
     * Adds a listener to this set.
     *
     * @param target
     *            a target object or class
     * @param methodId
     *            a method annotation identifier
     * @param methodId
     *            an id of a handler method
     * @throws NullPointerException
     *             id methodId == null or target == null
     * @throws IllegalArgumentException
     *             if methodId is empty or method argument types are not
     * conformat to the specified ones
     **************************************************************************/
    public void add(final Object target, final String methodId);
    /***************************************************************************
     * Removes a listener form this set. If a set does not contain a apecified
     * listener, then this method does nothing.
     *
     * @param target
     *            a target object or class
     *
     * @param methodId
     *            a method annotation identifier
     **************************************************************************/
    public void remove(final Object target, final String methodId);
    /***************************************************************************
     * Removes all Listerners targeting a specified object.
     *
     * @param target
     *            a target object or null if a listener is a static method
     * @throws NullPointerException
     *             if target is null
     **************************************************************************/
    public void removeAll(final Object target);
}

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This article, along with any associated source code and files, is licensed under The GNU Lesser General Public License (LGPLv3)

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Article Copyright 2011 by Łukasz Bownik
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