Groovy example source code file (MetaClassRegistryChangeEventListener.java)

This example Groovy source code file (MetaClassRegistryChangeEventListener.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Groovy tags/keywords

eventlistener, eventlistener, metaclassregistrychangeeventlistener, metaclassregistrychangeeventlistener, util

The Groovy MetaClassRegistryChangeEventListener.java source code

/*
 * Copyright 2003-2007 the original author or authors.
 *
 * 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 groovy.lang;

import java.util.EventListener;

/**
 * A listener called whenever a constant MetaClass is set, removed or replaced. 
 *
 * @see groovy.lang.MetaClassRegistry
 * @see groovy.lang.MetaClassRegistryChangeEvent
 *
 * @author <a href="mailto:blackdrag@gmx.org">Jochen Theodorou
  *
 */
public interface MetaClassRegistryChangeEventListener extends EventListener{

    /**
     * Called when the a constant MetaClass is updated. If the new MetaClass is null, then the MetaClass
     * is removed. Be careful, while this method is executed other updates may happen. If you want this
     * method thread safe, you have to take care of that by yourself.
     *
     * @param cmcu - the change event
     */
    void updateConstantMetaClass(MetaClassRegistryChangeEvent cmcu);
}