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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one
3    * or more contributor license agreements.  See the NOTICE file
4    * distributed with this work for additional information
5    * regarding copyright ownership.  The ASF licenses this file
6    * to you under the Apache License, Version 2.0 (the
7    * "License"); you may not use this file except in compliance
8    * with the License.  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,
13   * software distributed under the License is distributed on an
14   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   * KIND, either express or implied.  See the License for the
16   * specific language governing permissions and limitations
17   * under the License.
18   */
19  package org.apache.chemistry.opencmis.inmemory.storedobj.api;
20  
21  import org.apache.chemistry.opencmis.commons.data.ContentStream;
22  
23  public interface Content {
24  
25      /**
26       * return true if this object has content or false if there is no content
27       * attached.
28       * 
29       * @return
30       */
31      boolean hasContent();
32  
33      /**
34       * retrieve the content of a document
35       * 
36       * @return object containing mime-type, length and a stream with content
37       */
38      ContentStream getContent(long offset, long length);
39  
40      /**
41       * Assign content do a document. Existing content gets overwritten. The
42       * document is not yet persisted in the new state.
43       * 
44       * @param content
45       *            content to be assigned to the document.
46       * @param mustPersist
47       *            persist document (set to false if content is set during
48       *            creation of a document)
49       */
50      void setContent(ContentStream content, boolean mustPersist);
51  
52  }