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1   /*
2    * #%L
3    * ValidatingReplyCallback.java - mongodb-async-driver - Allanbank Consulting, Inc.
4    * %%
5    * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc.
6    * %%
7    * Licensed under the Apache License, Version 2.0 (the "License");
8    * you may not use this file except in compliance with the License.
9    * 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, software
14   * distributed under the License is distributed on an "AS IS" BASIS,
15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16   * See the License for the specific language governing permissions and
17   * limitations under the License.
18   * #L%
19   */
20  
21  package com.allanbank.mongodb.client.callback;
22  
23  import com.allanbank.mongodb.MongoDbException;
24  import com.allanbank.mongodb.client.message.Reply;
25  
26  /**
27   * ValidatingCallback to expect and extract a single document from the reply.
28   * The document is checked for errors but then ignored.
29   * 
30   * @api.no This class is <b>NOT</b> part of the drivers API. This class may be
31   *         mutated in incompatible ways between any two releases of the driver.
32   * @copyright 2014, Allanbank Consulting, Inc., All Rights Reserved
33   */
34  public class ValidatingReplyCallback extends AbstractReplyCallback<Reply> {
35  
36      /**
37       * Create a new ValidatingReplyCallback.
38       * 
39       * @param delegate
40       *            The delegate that we can wait on for the reply.
41       */
42      public ValidatingReplyCallback(final FutureReplyCallback delegate) {
43          super(delegate);
44      }
45  
46      /**
47       * {@inheritDoc}
48       * <p>
49       * Overridden to return true as there is no additional processing.
50       * </p>
51       */
52      @Override
53      public boolean isLightWeight() {
54          return true;
55      }
56  
57      /**
58       * {@inheritDoc}
59       * <p>
60       * Overridden to return the original reply.
61       * </p>
62       */
63      @Override
64      protected Reply convert(final Reply reply) throws MongoDbException {
65          return reply;
66      }
67  }