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Java > Open Source Codes > org > apache > axis > encoding > ser > JAFDataHandlerSerializer


1 /*
2  * Copyright 2001-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16
17 package org.apache.axis.encoding.ser;
18
19 import java.io.IOException JavaDoc;
20
21 import javax.activation.DataHandler JavaDoc;
22 import javax.xml.namespace.QName JavaDoc;
23
24 import org.apache.axis.Constants;
25 import org.apache.axis.Part;
26 import org.apache.axis.attachments.Attachments;
27 import org.apache.axis.components.logger.LogFactory;
28 import org.apache.axis.encoding.SerializationContext;
29 import org.apache.axis.encoding.Serializer;
30 import org.apache.axis.soap.SOAPConstants;
31 import org.apache.axis.utils.Messages;
32 import org.apache.axis.wsdl.fromJava.Types;
33 import org.apache.commons.logging.Log;
34 import org.w3c.dom.Element JavaDoc;
35 import org.xml.sax.Attributes JavaDoc;
36 import org.xml.sax.helpers.AttributesImpl JavaDoc;
37
38 /**
39  * JAFDataHandler Serializer
40  * @author Rick Rineholt
41  * Modified by Rich Scheuerle <scheu@us.ibm.com>
42  */
43 public class JAFDataHandlerSerializer implements Serializer {
44
45     protected static Log log =
46         LogFactory.getLog(JAFDataHandlerSerializer.class.getName());
47
48     /**
49      * Serialize a JAF DataHandler quantity.
50      */
51     public void serialize(QName JavaDoc name, Attributes JavaDoc attributes,
52                           Object JavaDoc value, SerializationContext context)
53         throws IOException JavaDoc
54     {
55         DataHandler JavaDoc dh= (DataHandler JavaDoc)value;
56         //Add the attachment content to the message.
57 Attachments attachments= context.getCurrentMessage().getAttachmentsImpl();
58
59         if (attachments == null) {
60             // Attachments apparently aren't supported.
61 // Instead of throwing NullPointerException like
62 // we used to do, throw something meaningful.
63 throw new IOException JavaDoc(Messages.getMessage("noAttachments"));
64         }
65         SOAPConstants soapConstants = context.getMessageContext().getSOAPConstants();
66         Part attachmentPart= attachments.createAttachmentPart(dh);
67
68         AttributesImpl JavaDoc attrs = new AttributesImpl JavaDoc();
69         if (attributes != null && 0 < attributes.getLength())
70             attrs.setAttributes(attributes); //copy the existing ones.
71
72         int typeIndex=-1;
73         if((typeIndex = attrs.getIndex(Constants.URI_DEFAULT_SCHEMA_XSI,
74                                 "type")) != -1){
75
76             //Found a xsi:type which should not be there for attachments.
77 attrs.removeAttribute(typeIndex);
78         }
79
80         boolean doTheDIME = false;
81         if(attachments.getSendType() == Attachments.SEND_TYPE_DIME)
82             doTheDIME = true;
83         
84         attrs.addAttribute("", soapConstants.getAttrHref(), soapConstants.getAttrHref(),
85                                "CDATA", doTheDIME ? attachmentPart.getContentId() : attachmentPart.getContentIdRef() );
86
87         context.startElement(name, attrs);
88         context.endElement(); //There is no data to so end the element.
89 }
90
91     public String JavaDoc getMechanismType() { return Constants.AXIS_SAX; }
92
93     /**
94      * Return XML schema for the specified type, suitable for insertion into
95      * the &lt;types&gt; element of a WSDL document, or underneath an
96      * &lt;element&gt; or &lt;attribute&gt; declaration.
97      *
98      * @param javaType the Java Class we're writing out schema for
99      * @param types the Java2WSDL Types object which holds the context
100      * for the WSDL being generated.
101      * @return a type element containing a schema simpleType/complexType
102      * @see org.apache.axis.wsdl.fromJava.Types
103      */
104     public Element JavaDoc writeSchema(Class JavaDoc javaType, Types types) throws Exception JavaDoc {
105         return null;
106     }
107 }
108
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