/*******************************************************************************
 * 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.
 *******************************************************************************/
package org.ofbiz.base.util.cache;

public interface CacheListener<K, V> {

    public void noteKeyRemoval(UtilCache<K, V> cache, K key, V oldValue);

    public void noteKeyAddition(UtilCache<K, V> cache, K key, V newValue);

    public void noteKeyUpdate(UtilCache<K, V> cache, K key, V newValue, V oldValue);
}

/*******************************************************************************
 * 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.
 *******************************************************************************/
package org.ofbiz.base.util.cache;

/**
 * Cache listener interface for {@link UtilCache}.
 * <p>SCIPIO: 2.1.0: NOTE: Do not use cache listeners except best-effort stats; cache modifications not synchronized.</p>
 */
public interface CacheListener<K, V> {

    public void noteKeyRemoval(UtilCache<K, V> cache, K key, V oldValue);

    public void noteKeyAddition(UtilCache<K, V> cache, K key, V newValue);

    public void noteKeyUpdate(UtilCache<K, V> cache, K key, V newValue, V oldValue);
}

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