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
20 package org.apache.james.mime4j.message;
21
22 import java.io.IOException;
23 import java.io.InputStream;
24 import java.io.OutputStream;
25
26 import org.apache.james.mime4j.codec.CodecUtil;
27 import org.apache.james.mime4j.storage.MultiReferenceStorage;
28
29 /**
30 * Binary body backed by a
31 * {@link org.apache.james.mime4j.storage.Storage}
32 */
33 class StorageBinaryBody extends BinaryBody {
34
35 private MultiReferenceStorage storage;
36
37 public StorageBinaryBody(final MultiReferenceStorage storage) {
38 this.storage = storage;
39 }
40
41 @Override
42 public InputStream getInputStream() throws IOException {
43 return storage.getInputStream();
44 }
45
46 @Override
47 public void writeTo(OutputStream out) throws IOException {
48 if (out == null)
49 throw new IllegalArgumentException();
50
51 InputStream in = storage.getInputStream();
52 CodecUtil.copy(in, out);
53 in.close();
54 }
55
56 @Override
57 public StorageBinaryBody copy() {
58 storage.addReference();
59 return new StorageBinaryBody(storage);
60 }
61
62 /**
63 * Deletes the Storage that holds the content of this binary body.
64 *
65 * @see org.apache.james.mime4j.message.Disposable#dispose()
66 */
67 @Override
68 public void dispose() {
69 if (storage != null) {
70 storage.delete();
71 storage = null;
72 }
73 }
74
75 }