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Java > Open Source Codes > org > openlaszlo > iv > flash > xml > apache > functions > FuncSerialize


1 /*
2  * $Id: FuncSerialize.java,v 1.3 2002/03/13 01:46:17 skavish Exp $
3  *
4  * ===========================================================================
5  *
6  * The JGenerator Software License, Version 1.0
7  *
8  * Copyright (c) 2000 Dmitry Skavish (skavish@usa.net). All rights reserved.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions are met:
12  *
13  * 1. Redistributions of source code must retain the above copyright
14  * notice, this list of conditions and the following disclaimer.
15  *
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in
18  * the documentation and/or other materials provided with the
19  * distribution.
20  *
21  * 3. The end-user documentation included with the redistribution, if
22  * any, must include the following acknowlegement:
23  * "This product includes software developed by Dmitry Skavish
24  * (skavish@usa.net, http://www.flashgap.com/)."
25  * Alternately, this acknowlegement may appear in the software itself,
26  * if and wherever such third-party acknowlegements normally appear.
27  *
28  * 4. The name "The JGenerator" must not be used to endorse or promote
29  * products derived from this software without prior written permission.
30  * For written permission, please contact skavish@usa.net.
31  *
32  * 5. Products derived from this software may not be called "The JGenerator"
33  * nor may "The JGenerator" appear in their names without prior written
34  * permission of Dmitry Skavish.
35  *
36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
37  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
38  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
39  * DISCLAIMED. IN NO EVENT SHALL DMITRY SKAVISH OR THE OTHER
40  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
42  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
43  * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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49  */
50
51 package org.openlaszlo.iv.flash.xml.apache.functions;
52
53 import org.w3c.dom.*;
54
55 import org.apache.xpath.functions.*;
56 import org.apache.xpath.objects.*;
57 import org.apache.xpath.*;
58 import org.apache.xml.serialize.*;
59 import org.apache.xml.dtm.*;
60
61 import java.io.*;
62 import org.openlaszlo.iv.flash.util.*;
63
64 /**
65  * Serialize specified node
66  */
67 public class FuncSerialize extends FunctionDef1Arg {
68
69     /**
70      * Execute the function. The function must return a valid object.
71      *
72      * @param xctxt The current execution context.
73      * @return A valid XObject.
74      *
75      * @throws javax.xml.transform.TransformerException
76      */
77     public XObject execute(XPathContext xctxt) throws javax.xml.transform.TransformerException JavaDoc {
78
79         int context = getArg0AsNode(xctxt);
80
81         Node node = null;
82         if( context != DTM.NULL ) {
83             DTM dtm = xctxt.getDTM(context);
84             node = dtm.getNode(context);
85         }
86
87         if( node != null ) return serialize(node, Method.XML, 0);
88         return null;
89     }
90
91     static XObject serialize( Node node, String JavaDoc method, int indent ) {
92
93         OutputFormat format = new OutputFormat(method, null, indent>0);
94         format.setOmitXMLDeclaration(true);
95         format.setIndent(indent);
96
97         Serializer ser = SerializerFactory.getSerializerFactory(method).makeSerializer(format);
98         StringWriter ow = new StringWriter();
99         ser.setOutputCharStream(ow);
100
101         try {
102             DOMSerializer domser = ser.asDOMSerializer();
103
104             switch( node.getNodeType() ) {
105                 case Node.ELEMENT_NODE:
106                     domser.serialize((Element)node);
107                     break;
108                 case Node.DOCUMENT_NODE:
109                     domser.serialize((Document)node);
110                     break;
111             }
112         } catch( IOException e ) {
113             Log.logRB(e);
114         }
115
116         return new XString(ow.toString());
117     }
118 }
119
120
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