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1   /*
2    * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
3    * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4    *
5    * This code is free software; you can redistribute it and/or modify it
6    * under the terms of the GNU General Public License version 2 only, as
7    * published by the Free Software Foundation.  Oracle designates this
8    * particular file as subject to the "Classpath" exception as provided
9    * by Oracle in the LICENSE file that accompanied this code.
10   *
11   * This code is distributed in the hope that it will be useful, but WITHOUT
12   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14   * version 2 for more details (a copy is included in the LICENSE file that
15   * accompanied this code).
16   *
17   * You should have received a copy of the GNU General Public License version
18   * 2 along with this work; if not, write to the Free Software Foundation,
19   * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20   *
21   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22   * or visit www.oracle.com if you need additional information or have any
23   * questions.
24   */
25  
26  package com.sun.istack.internal;
27  
28  import javax.activation.DataSource;
29  import java.io.InputStream;
30  import java.io.ByteArrayInputStream;
31  import java.io.OutputStream;
32  
33  /**
34   * {@link DataSource} backed by a byte buffer.
35   *
36   * @author Kohsuke Kawaguchi
37   */
38  public final class ByteArrayDataSource implements DataSource {
39  
40      private final String contentType;
41      private final byte[] buf;
42      private final int len;
43  
44      public ByteArrayDataSource(byte[] buf, String contentType) {
45          this(buf,buf.length,contentType);
46      }
47      public ByteArrayDataSource(byte[] buf, int length, String contentType) {
48          this.buf = buf;
49          this.len = length;
50          this.contentType = contentType;
51      }
52  
53      public String getContentType() {
54          if(contentType==null)
55              return "application/octet-stream";
56          return contentType;
57      }
58  
59      public InputStream getInputStream() {
60          return new ByteArrayInputStream(buf,0,len);
61      }
62  
63      public String getName() {
64          return null;
65      }
66  
67      public OutputStream getOutputStream() {
68          throw new UnsupportedOperationException();
69      }
70  }