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 /*
  * Copyright (C) 2011 The Guava 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 com.google.common.cache;
A collection of common removal listeners.

Author(s):
Charles Fry
Since:
10.0
public final class RemovalListeners {
  private RemovalListeners() {}

  
Returns a RemovalListener which processes all eviction notifications using executor.

Parameters:
listener the backing listener
executor the executor with which removal notifications are asynchronously executed
  public static <K, V> RemovalListener<K, V> asynchronous(
      final RemovalListener<K, V> listenerfinal Executor executor) {
    return new RemovalListener<K, V>() {
      @Override
      public void onRemoval(final RemovalNotification<K, V> notification) {
        executor.execute(new Runnable() {
          @Override
          public void run() {
            listener.onRemoval(notification);
          }
        });
      }
    };
  }
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