1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You 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 implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 package org.apache.commons.mail2.javax.activation;
19
20 import java.io.IOException;
21 import java.io.InputStream;
22 import java.io.OutputStream;
23
24 import javax.activation.DataSource;
25
26 /**
27 * A JavaBeans Activation Framework {@link DataSource} specialized for {@link InputStream}.
28 * <p>
29 * Copied from <a href="https://cxf.apache.org/">Apache CXF</a> and modified.
30 * </p>
31 *
32 * @since 1.6.0
33 */
34 public final class InputStreamDataSource implements DataSource {
35
36 /**
37 * Default content type documented in {@link DataSource#getContentType()}.
38 */
39 private static final String DEFAULT_CONTENT_TYPE = "application/octet-stream";
40
41 /**
42 * The MIME content type.
43 */
44 private final String contentType;
45
46 /**
47 * The source.
48 */
49 private final InputStream inputStream;
50
51 /**
52 * The optional name.
53 */
54 private final String name;
55
56 /**
57 * Constructs a new instance.
58 *
59 * @param inputStream An input stream.
60 * @param contentType A content type.
61 */
62 public InputStreamDataSource(final InputStream inputStream, final String contentType) {
63 this(inputStream, contentType, null);
64 }
65
66 /**
67 * Constructs a new instance.
68 *
69 * @param inputStream An input stream.
70 * @param contentType A content type.
71 * @param name A name.
72 */
73 public InputStreamDataSource(final InputStream inputStream, final String contentType, final String name) {
74 this.inputStream = inputStream;
75 this.contentType = contentType != null ? contentType : DEFAULT_CONTENT_TYPE;
76 this.name = name;
77 }
78
79 @Override
80 public String getContentType() {
81 return contentType;
82 }
83
84 @Override
85 public InputStream getInputStream() throws IOException {
86 return inputStream;
87 }
88
89 @Override
90 public String getName() {
91 return name;
92 }
93
94 /**
95 * Always throws {@link UnsupportedOperationException}.
96 *
97 * @return Always throws {@link UnsupportedOperationException}.
98 * @throws UnsupportedOperationException Always throws {@link UnsupportedOperationException}.
99 */
100 @Override
101 public OutputStream getOutputStream() {
102 throw new UnsupportedOperationException();
103 }
104
105 }