1 /************************************************************************
2 * Copyright (c) 2000-2006 The Apache Software Foundation. *
3 * All rights reserved. *
4 * ------------------------------------------------------------------- *
5 * Licensed under the Apache License, Version 2.0 (the "License"); you *
6 * may not use this file except in compliance with the License. You *
7 * may obtain a copy of the License at: *
8 * *
9 * http://www.apache.org/licenses/LICENSE-2.0 *
10 * *
11 * Unless required by applicable law or agreed to in writing, software *
12 * distributed under the License is distributed on an "AS IS" BASIS, *
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or *
14 * implied. See the License for the specific language governing *
15 * permissions and limitations under the License. *
16 ***********************************************************************/
17
18 package org.apache.james.mailrepository;
19
20 import org.apache.avalon.cornerstone.services.store.StreamRepository;
21 import org.apache.james.core.MimeMessageSource;
22
23 import java.io.IOException;
24 import java.io.InputStream;
25
26 public class MimeMessageAvalonSource extends MimeMessageSource {
27
28
29
30 /***
31 * The stream repository used by this data source.
32 */
33 StreamRepository sr = null;
34
35 /***
36 * The name of the repository
37 */
38 String repositoryName = null;
39
40 /***
41 * The key for the particular stream in the stream repository
42 * to be used by this data source.
43 */
44 String key = null;
45
46 private long size = -1;
47
48 public MimeMessageAvalonSource(StreamRepository sr, String repositoryName, String key) {
49 this.sr = sr;
50 this.repositoryName = repositoryName;
51 this.key = key;
52 }
53
54 /***
55 * Returns a unique String ID that represents the location from where
56 * this source is loaded. This will be used to identify where the data
57 * is, primarily to avoid situations where this data would get overwritten.
58 *
59 * @return the String ID
60 */
61 public String getSourceId() {
62 StringBuffer sourceIdBuffer =
63 new StringBuffer(128)
64 .append(repositoryName)
65 .append("/")
66 .append(key);
67 return sourceIdBuffer.toString();
68 }
69
70 public InputStream getInputStream() throws IOException {
71 return sr.get(key);
72 }
73
74 public long getMessageSize() throws IOException {
75 if (size == -1) {
76 if (sr instanceof org.apache.james.mailrepository.filepair.File_Persistent_Stream_Repository) {
77 size = ((org.apache.james.mailrepository.filepair.File_Persistent_Stream_Repository) sr).getSize(key);
78 } else size = super.getMessageSize();
79 }
80 return size;
81 }
82 }