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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.xml.internal.ws.message;
27  
28  import com.sun.xml.internal.ws.api.message.AttachmentSet;
29  import com.sun.xml.internal.ws.api.message.Attachment;
30  
31  import java.util.ArrayList;
32  import java.util.Iterator;
33  
34  /**
35   * Default dumb {@link AttachmentSet} implementation backed by {@link ArrayList}.
36   *
37   * <p>
38   * The assumption here is that the number of attachments are small enough to
39   * justify linear search in {@link #get(String)}.
40   *
41   * @author Kohsuke Kawaguchi
42   */
43  public final class AttachmentSetImpl implements AttachmentSet {
44  
45      private final ArrayList<Attachment> attList = new ArrayList<Attachment>();
46  
47      /**
48       * Creates an empty {@link AttachmentSet}.
49       */
50      public AttachmentSetImpl() {
51      }
52  
53      /**
54       * Creates an {@link AttachmentSet} by copying contents from another.
55       */
56      public AttachmentSetImpl(Iterable<Attachment> base) {
57          for (Attachment a : base)
58              add(a);
59      }
60  
61      public Attachment get(String contentId) {
62          for( int i=attList.size()-1; i>=0; i-- ) {
63              Attachment a = attList.get(i);
64              if(a.getContentId().equals(contentId))
65                  return a;
66          }
67          return null;
68      }
69  
70      public boolean isEmpty() {
71          return attList.isEmpty();
72      }
73  
74      public void add(Attachment att) {
75          attList.add(att);
76      }
77  
78      public Iterator<Attachment> iterator() {
79          return attList.iterator();
80      }
81  
82  }