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1   /*
2    * ====================================================================
3    * Licensed to the Apache Software Foundation (ASF) under one
4    * or more contributor license agreements.  See the NOTICE file
5    * distributed with this work for additional information
6    * regarding copyright ownership.  The ASF licenses this file
7    * to you under the Apache License, Version 2.0 (the
8    * "License"); you may not use this file except in compliance
9    * with the License.  You may obtain a copy of the License at
10   *
11   *   http://www.apache.org/licenses/LICENSE-2.0
12   *
13   * Unless required by applicable law or agreed to in writing,
14   * software distributed under the License is distributed on an
15   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
16   * KIND, either express or implied.  See the License for the
17   * specific language governing permissions and limitations
18   * under the License.
19   * ====================================================================
20   *
21   * This software consists of voluntary contributions made by many
22   * individuals on behalf of the Apache Software Foundation.  For more
23   * information on the Apache Software Foundation, please see
24   * <http://www.apache.org/>.
25   *
26   */
27  package org.apache.http.impl.client.cache;
28  
29  import java.io.Closeable;
30  
31  /**
32   * Specifies when revalidation requests are scheduled.
33   *
34   * @since 4.3
35   */
36  public interface SchedulingStrategy extends Closeable
37  {
38      /**
39       * Schedule an {@link AsynchronousValidationRequest} to be executed.
40       *
41       * @param revalidationRequest the request to be executed; not <code>null</code>
42       * @throws java.util.concurrent.RejectedExecutionException if the request could not be scheduled for execution
43       */
44      void schedule(AsynchronousValidationRequest revalidationRequest);
45  }