/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

/*
 * DirtyLifecycleListener.java
 *
 */

package javax.jdo.listener;

/**
 * This interface is implemented by listeners to be notified of
 * dirty events.
 * @version 2.0
 * @since 2.0
 */
public interface DirtyLifecycleListener extends InstanceLifecycleListener {

    /**
     * Invoked whenever a persistent instance is first made dirty,
     * during an operation that modifies the value of a persistent or
     * transactional field. Called before the value is changed.
     * @param event The lifecycle event
     * @since 2.0
     */
    void preDirty (InstanceLifecycleEvent event);

    /**
     * Invoked whenever a persistent instance is first made dirty,
     * during an operation that modifies the value of a persistent or
     * transactional field. Called after the value is changed.
     * @param event The lifecycle event
     * @since 2.0
     */
    void postDirty (InstanceLifecycleEvent event);
}
