org.ow2.util.event.api.IEvent Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of util-event-api Show documentation

API for a generic event module.

The newest version!

/**
 * OW2 Util
 * Copyright (C) 2008 Bull S.A.S.
 * Contact: [email protected]
 *
 * 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 (at your option) 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 *
 * --------------------------------------------------------------------------
 * $Id: IEvent.java 4389 2008-12-15 13:48:57Z alitokmen $
 * --------------------------------------------------------------------------
 */

package org.ow2.util.event.api;

/**
 * Define the base interface for an event.

 * As listeners may be executed in concurrency, implementations exposing writable attributes MUST be thread safe.

 * The event developer MUST implement a security mechanism if the event expose critical values, or references.
 * @author missonng
 */
public interface IEvent {
    /**
     * Check whether the event listener has permission to receive this event.
     * @param eventListener The event listener to check.
     * @return True if the listener has the permission, false otherwise.
     */
    boolean checkPermission(IEventListener eventListener);
}