KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > sun > org > apache > xerces > internal > jaxp > XNI2SAX


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 2000-2002 The Apache Software Foundation. All rights
6  * reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
14  *
15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
19  *
20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by the
23  * Apache Software Foundation (http://www.apache.org/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. The names "Xerces" and "Apache Software Foundation" must
28  * not be used to endorse or promote products derived from this
29  * software without prior written permission. For written
30  * permission, please contact apache@apache.org.
31  *
32  * 5. Products derived from this software may not be called "Apache",
33  * nor may "Apache" appear in their name, without prior written
34  * permission of the Apache Software Foundation.
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 THE APACHE SOFTWARE FOUNDATION OR
40  * ITS 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,
45  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
46  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
47  * SUCH DAMAGE.
48  * ====================================================================
49  *
50  * This software consists of voluntary contributions made by many
51  * individuals on behalf of the Apache Software Foundation and was
52  * originally based on software copyright (c) 1999, International
53  * Business Machines, Inc., http://www.apache.org. For more
54  * information on the Apache Software Foundation, please see
55  * <http://www.apache.org/>.
56  */

57 package com.sun.org.apache.xerces.internal.jaxp;
58
59 import com.sun.org.apache.xerces.internal.impl.xs.opti.DefaultXMLDocumentHandler;
60 import com.sun.org.apache.xerces.internal.util.AttributesProxy;
61 import com.sun.org.apache.xerces.internal.util.LocatorProxy;
62 import com.sun.org.apache.xerces.internal.xni.Augmentations;
63 import com.sun.org.apache.xerces.internal.xni.NamespaceContext;
64 import com.sun.org.apache.xerces.internal.xni.QName;
65 import com.sun.org.apache.xerces.internal.xni.XMLAttributes;
66 import com.sun.org.apache.xerces.internal.xni.XMLLocator;
67 import com.sun.org.apache.xerces.internal.xni.XMLString;
68 import com.sun.org.apache.xerces.internal.xni.XNIException;
69 import org.xml.sax.ContentHandler JavaDoc;
70 import org.xml.sax.SAXException JavaDoc;
71
72 /**
73  * Converts {@link XNI} events to {@link ContentHandler} events.
74  *
75  * <p>
76  * Deriving from {@link DefaultXMLDocumentHandler}
77  * to reuse its default {@link com.sun.org.apache.xerces.internal.xni.XMLDocumentHandler}
78  * implementation.
79  *
80  * @author
81  * Kohsuke Kawaguchi (kohsuke.kawaguchi@sun.com)
82  */

83 public class XNI2SAX extends DefaultXMLDocumentHandler {
84     
85     private ContentHandler JavaDoc fContentHandler;
86
87     private String JavaDoc fVersion;
88
89     /** Namespace context */
90     protected NamespaceContext fNamespaceContext;
91     
92     /**
93      * For efficiency, we reuse one instance.
94      */

95     private final AttributesProxy fAttributesProxy = new AttributesProxy();
96
97     public void setContentHandler( ContentHandler JavaDoc handler ) {
98         this.fContentHandler = handler;
99     }
100     
101     public ContentHandler JavaDoc getContentHandler() {
102         return fContentHandler;
103     }
104     
105
106     public void xmlDecl(String JavaDoc version, String JavaDoc encoding, String JavaDoc standalone, Augmentations augs) throws XNIException {
107         this.fVersion = version;
108     }
109
110     public void startDocument(XMLLocator locator, String JavaDoc encoding, NamespaceContext namespaceContext, Augmentations augs) throws XNIException {
111         fNamespaceContext = namespaceContext;
112         fContentHandler.setDocumentLocator(new LocatorProxy(locator,fVersion));
113         try {
114             fContentHandler.startDocument();
115         } catch (SAXException JavaDoc e) {
116             throw new XNIException(e);
117         }
118     }
119
120     public void endDocument(Augmentations augs) throws XNIException {
121         try {
122             fContentHandler.endDocument();
123         } catch (SAXException JavaDoc e) {
124             throw new XNIException(e);
125         }
126     }
127
128     public void processingInstruction(String JavaDoc target, XMLString data, Augmentations augs) throws XNIException {
129         try {
130             fContentHandler.processingInstruction(target,data.toString());
131         } catch (SAXException JavaDoc e) {
132             throw new XNIException(e);
133         }
134     }
135
136     public void startElement(QName element, XMLAttributes attributes, Augmentations augs) throws XNIException {
137         try {
138             // start namespace prefix mappings
139
int count = fNamespaceContext.getDeclaredPrefixCount();
140             if (count > 0) {
141                 String JavaDoc prefix = null;
142                 String JavaDoc uri = null;
143                 for (int i = 0; i < count; i++) {
144                     prefix = fNamespaceContext.getDeclaredPrefixAt(i);
145                     uri = fNamespaceContext.getURI(prefix);
146                     fContentHandler.startPrefixMapping(prefix, (uri == null)?"":uri);
147                 }
148             }
149                     
150             String JavaDoc uri = element.uri != null ? element.uri : "";
151             String JavaDoc localpart = element.localpart;
152             fAttributesProxy.setAttributes(attributes);
153             fContentHandler.startElement(uri, localpart, element.rawname, fAttributesProxy);
154         } catch( SAXException JavaDoc e ) {
155             throw new XNIException(e);
156         }
157     }
158
159     public void endElement(QName element, Augmentations augs) throws XNIException {
160         try {
161             String JavaDoc uri = element.uri != null ? element.uri : "";
162             String JavaDoc localpart = element.localpart;
163             fContentHandler.endElement(uri, localpart, element.rawname);
164             
165             // send endPrefixMapping events
166
int count = fNamespaceContext.getDeclaredPrefixCount();
167             if (count > 0) {
168                 for (int i = 0; i < count; i++) {
169                     fContentHandler.endPrefixMapping(fNamespaceContext.getDeclaredPrefixAt(i));
170                 }
171             }
172         } catch( SAXException JavaDoc e ) {
173             throw new XNIException(e);
174         }
175     }
176
177
178
179
180
181     public void emptyElement(QName element, XMLAttributes attributes, Augmentations augs) throws XNIException {
182         startElement(element,attributes,augs);
183         endElement(element,augs);
184     }
185
186     public void characters(XMLString text, Augmentations augs) throws XNIException {
187         try {
188             fContentHandler.characters(text.ch,text.offset,text.length);
189         } catch (SAXException JavaDoc e) {
190             throw new XNIException(e);
191         }
192     }
193
194     public void ignorableWhitespace(XMLString text, Augmentations augs) throws XNIException {
195         try {
196             fContentHandler.ignorableWhitespace(text.ch,text.offset,text.length);
197         } catch (SAXException JavaDoc e) {
198             throw new XNIException(e);
199         }
200     }
201
202
203 }
204
Popular Tags