BitstreamDAO


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3    * Institute of Technology.  All rights reserved.
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34  package org.dspace.checker;
35  
36  import java.io.IOException  ;
37  import java.io.InputStream  ;
38  import java.sql.SQLException  ;
39  
40  import org.dspace.core.Context;
41  import org.dspace.storage.bitstore.BitstreamStorageManager;
42  
43  /**
44   * <p>
45   * Data Access Object for Bitstreams.
46   * </p>
47   * 
48   * @author Jim Downing
49   * @author Grace Carpenter
50   * @author Nathan Sarr
51   * 
52   */
53  public class BitstreamDAO
54  {
55      /**
56       * Default Constructor
57       */
58      public BitstreamDAO()
59      {
60          ;
61      }
62  
63      /**
64       * Retrieves the bitstream from the bitstore.
65       * 
66       * @param id
67       *            the bitstream id.
68       * 
69       * @return Bitstream as an InputStream
70       * 
71       * @throws IOException
72       *             Rethrown from BitstreamStorageManager
73       * @throws SQLException
74       *             Rethrown from BitstreamStorageManager
75       * 
76       * @see org.dspace.storage.bitstore.BitstreamStorageManager#retrieve(Context,
77       *      int)
78       */
79      public InputStream   getBitstream(int id) throws IOException  , SQLException  
80      {
81  
82          Context context = null;
83          InputStream   is = null;
84          try
85          {
86              context = new Context();
87              is = BitstreamStorageManager.retrieve(context, id);
88          }
89          finally
90          {
91              context.abort();
92          }
93  
94          return is;
95      }
96  }
97
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