tapestry-framework/src/java/org/apache/tapestry/services/ResetEventHub.java

// Copyright 2004, 2005 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package org.apache.tapestry.services;

import org.apache.tapestry.event.ResetEventListener;

/**
 * Service interface for a source of <b>reset</b> events; this events are used
 * to inform other services that they should discard any cached data.
 * 
 * @author Howard Lewis Ship
 * @since 4.0
 */
public interface ResetEventHub
{

    void addResetEventListener(ResetEventListener l);

    void removeResetEventListener(ResetEventListener l);

    /**
     * Notifies registered listeners.
     */
    void fireResetEvent();
}