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1   /**
2    * Copyright (C) 2005-2009 Alfresco Software Limited.
3    *
4    * This file is part of the Spring Surf Extension project.
5    *
6    * Licensed under the Apache License, Version 2.0 (the "License");
7    * you may not use this file except in compliance with the License.
8    * You may obtain a copy of the License at
9    *
10   *  http://www.apache.org/licenses/LICENSE-2.0
11   *
12   * Unless required by applicable law or agreed to in writing, software
13   * distributed under the License is distributed on an "AS IS" BASIS,
14   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15   * See the License for the specific language governing permissions and
16   * limitations under the License.
17   */
18  
19  package org.springframework.extensions.surf.resource;
20  
21  import java.io.IOException;
22  import java.io.InputStream;
23  import java.io.Reader;
24  
25  /**
26   * Interface to describe content around a Resource.
27   *  
28   * @author muzquiano
29   */
30  public interface ResourceContent
31  {
32      /**
33       * A link back to the resource of which this content is a part
34       * 
35       * @return
36       */
37      public Resource getResource();
38  
39      /**
40       * Returns the timestamp when this content convenience instance
41       * was created
42       * 
43       * @return
44       */
45      public long getTimestamp();
46      
47      /**
48       * Gets the bytes.
49       * 
50       * @return the bytes
51       */
52      public byte[] getBytes() throws IOException;
53          
54      /**
55       * Retrieves an input stream to the resource content
56       * 
57       * @return the input stream
58       * 
59       * @throws IOException Signals that an I/O exception has occurred.
60       */
61      public InputStream getInputStream() throws IOException;
62      
63      /**
64       * Gets the reader for the resource content
65       * 
66       * @return the reader
67       * 
68       * @throws IOException Signals that an I/O exception has occurred.
69       */
70      public Reader getReader() throws IOException;
71      
72  }