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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
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8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
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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).
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17  * You should have received a copy of the GNU General Public License version
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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 import com.sun.xml.internal.ws.encoding.MimeMultipartParser;
31 import com.sun.xml.internal.ws.resources.EncodingMessages;
32 import com.sun.istack.internal.Nullable;
33 
34 import javax.xml.ws.WebServiceException;
35 import java.util.Iterator;
36 import java.util.Map;
37 import java.util.HashMap;
38 import java.io.IOException;
39 
40 /**
41  * {@link AttachmentSet} backed by {@link com.sun.xml.internal.ws.encoding.MimeMultipartParser}
42  *
43  * @author Vivek Pandey
44  */
45 public final class MimeAttachmentSet implements AttachmentSet {
46     private final MimeMultipartParser mpp;
47     private Map<String, Attachment> atts = new HashMap<String, Attachment>();
48 
49 
MimeAttachmentSet(MimeMultipartParser mpp)50     public MimeAttachmentSet(MimeMultipartParser mpp) {
51         this.mpp = mpp;
52     }
53 
54     @Nullable
get(String contentId)55     public Attachment get(String contentId) {
56         Attachment att;
57         /**
58          * First try to get the Attachment from internal map, maybe this attachment
59          * is added by the user.
60          */
61         att = atts.get(contentId);
62         if(att != null)
63             return att;
64         try {
65             /**
66              * Attachment is not found in the internal map, now do look in
67              * the mpp, if found add to the internal Attachment map.
68              */
69             att = mpp.getAttachmentPart(contentId);
70             if(att != null){
71                 atts.put(contentId, att);
72             }
73         } catch (IOException e) {
74             throw new WebServiceException(EncodingMessages.NO_SUCH_CONTENT_ID(contentId), e);
75         }
76         return att;
77     }
78 
79     /**
80      * This is expensive operation, its going to to read all the underlying
81      * attachments in {@link MimeMultipartParser}.
82      */
isEmpty()83     public boolean isEmpty() {
84         return atts.size() <= 0 && mpp.getAttachmentParts().isEmpty();
85     }
86 
add(Attachment att)87     public void add(Attachment att) {
88         atts.put(att.getContentId(), att);
89     }
90 
91     /**
92      * Expensive operation.
93      */
iterator()94     public Iterator<Attachment> iterator() {
95         /**
96          * Browse thru all the attachments in the mpp, add them to #atts,
97          * then return whether its empty.
98          */
99         Map<String, Attachment> attachments = mpp.getAttachmentParts();
100         for(Map.Entry<String, Attachment> att : attachments.entrySet()) {
101             if(atts.get(att.getKey()) == null){
102                 atts.put(att.getKey(), att.getValue());
103             }
104         }
105 
106         return atts.values().iterator();
107     }
108 }
109