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1
51 package org.apache.fop.apps;
52
53
54 import javax.xml.transform.TransformerFactory  ;
56 import javax.xml.transform.Transformer ;
57 import javax.xml.transform.Source ;
58 import javax.xml.transform.stream.StreamSource ;
59 import javax.xml.transform.sax.SAXResult ;
60 import javax.xml.transform.sax.SAXSource ;
61 import javax.xml.transform.sax.SAXTransformerFactory ;
62
63 import org.xml.sax.InputSource ;
65 import org.xml.sax.XMLReader ;
66 import org.xml.sax.XMLFilter ;
67
68 import java.io.File ;
70
71
75 public class TraxInputHandler extends InputHandler {
76 private Transformer transformer;
77 private StreamSource xmlSource;
78 private Source xsltSource;
79
80 public TraxInputHandler(File xmlfile, File xsltfile)
81 throws FOPException {
82 xmlSource = new StreamSource (xmlfile);
83 xsltSource = new StreamSource (xsltfile);
84 initTransformer();
85 }
86
87 public TraxInputHandler(String xmlURL, String xsltURL)
88 throws FOPException {
89 this.xmlSource = new StreamSource (xmlURL);
90 this.xsltSource = new StreamSource (xsltURL);
91 initTransformer();
92 }
93
94 public TraxInputHandler(InputSource xmlSource, InputSource xsltSource)
95 throws FOPException {
96 this.xmlSource = new StreamSource (xmlSource.getByteStream(),
97 xmlSource.getSystemId());
98 this.xsltSource = new StreamSource (xsltSource.getByteStream(),
99 xsltSource.getSystemId());
100 initTransformer();
101 }
102
103 private void initTransformer() throws FOPException {
104 try {
105 transformer = TransformerFactory.newInstance().newTransformer (xsltSource);
106 }
107 catch( Exception ex) {
108 throw new FOPException(ex);
109 }
110 }
111
112
117 public InputSource getInputSource() {
118 InputSource is = new InputSource ();
119 is.setByteStream(xmlSource.getInputStream());
120 is.setSystemId(xmlSource.getSystemId());
121 return is;
122 }
123
124
132 public XMLReader getParser() throws FOPException {
133 return this.getXMLFilter(xsltSource);
134 }
135
136
145 private static XMLFilter getXMLFilter(Source xsltSource)
146 throws FOPException {
147 try {
148 TransformerFactory tFactory = TransformerFactory.newInstance();
150 if (tFactory.getFeature(SAXSource.FEATURE)
153 && tFactory.getFeature(SAXResult.FEATURE)) {
154 SAXTransformerFactory saxTFactory =
156 ((SAXTransformerFactory )tFactory);
157 XMLFilter xmlfilter =
159 saxTFactory.newXMLFilter(xsltSource);
160
161 XMLReader parser = createParser();
163 if (parser == null) {
164 throw new FOPException("Unable to create SAX parser");
165 }
166
167 xmlfilter.setParent(parser);
169 return xmlfilter;
170 } else {
171 throw new FOPException("Your parser doesn't support the features SAXSource and SAXResult."
172 + "\nMake sure you are using a xsl parser which supports TrAX");
173 }
174 } catch (FOPException fex) {
175 throw fex;
176 } catch (Exception ex) {
177 throw new FOPException(ex);
178 }
179 }
180
181
182
191 public static XMLFilter getXMLFilter(File xmlfile,
192 File xsltfile) throws FOPException {
193 return getXMLFilter(new StreamSource (xsltfile));
194 }
195
196 public void run(Driver driver) throws FOPException {
197 try {
198 transformer.transform(xmlSource,
199 new SAXResult (driver.getContentHandler()));
200 } catch (Exception ex) {
201 throw new FOPException(ex);
202 }
203 }
204
205 public void setParameter(String name, Object value) {
206 transformer.setParameter(name, value);
207 }
208
209 }
210 |
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