zongaro 2003/02/04 08:06:18
Modified: java/samples/CompiledEJB Tag: XSLTC_DTM TransformBean.java
Log:
Changed code to use the JAXP transform API's, rather than the XSLTC native API.
This code relies on XSLTC's "use-classpath" attribute to ensure that
previously compiled translets are used for the transformation.
Revision Changes Path
No revision
No revision
1.3.2.2 +29 -81 xml-xalan/java/samples/CompiledEJB/TransformBean.java
Index: TransformBean.java
===================================================================
RCS file: /home/cvs/xml-xalan/java/samples/CompiledEJB/TransformBean.java,v
retrieving revision 1.3.2.1
retrieving revision 1.3.2.2
diff -u -r1.3.2.1 -r1.3.2.2
--- TransformBean.java 27 Jan 2003 19:43:37 -0000 1.3.2.1
+++ TransformBean.java 4 Feb 2003 16:06:18 -0000 1.3.2.2
@@ -60,29 +60,21 @@
*
*/
-import java.io.*;
-import java.text.*;
-import java.util.*;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+
+import javax.xml.transform.Transformer;
+import javax.xml.transform.TransformerFactory;
+import javax.xml.transform.ErrorListener;
+import javax.xml.transform.stream.StreamResult;
+import javax.xml.transform.stream.StreamSource;
-import java.rmi.RemoteException;
import javax.ejb.SessionBean;
import javax.ejb.SessionContext;
-import javax.xml.parsers.SAXParser;
-import javax.xml.parsers.SAXParserFactory;
-import javax.xml.parsers.ParserConfigurationException;
-
-import org.xml.sax.XMLReader;
-import org.xml.sax.SAXException;
-
-import org.apache.xalan.xsltc.*;
-import org.apache.xalan.xsltc.runtime.AbstractTranslet;
-import org.apache.xalan.xsltc.runtime.output.*;
-import org.apache.xalan.xsltc.dom.*;
-
public class TransformBean implements SessionBean {
- private SessionContext _context = null;
+ private SessionContext m_context = null;
private final static String nullErrorMsg =
"<h1>XSL transformation error</h1>"+
@@ -93,38 +85,6 @@
"http://xml.org/sax/features/namespaces";;
/**
- * Read the input document and build the internal "DOM" tree.
- */
- private DOMImpl getDOM(String url, AbstractTranslet translet)
- throws Exception {
-
- // Create a SAX parser and get the XMLReader object it uses
- final SAXParserFactory factory = SAXParserFactory.newInstance();
- try {
- factory.setFeature(NAMESPACE_FEATURE,true);
- }
- catch (Exception e) {
- factory.setNamespaceAware(true);
- }
- final SAXParser parser = factory.newSAXParser();
- final XMLReader reader = parser.getXMLReader();
-
- // Set the DOM's builder as the XMLReader's SAX2 content handler
- DOMImpl dom = new DOMImpl();
- reader.setContentHandler(dom.getBuilder());
-
- // Create a DTD monitor and pass it to the XMLReader object
- final DTDMonitor dtdMonitor = new DTDMonitor();
- dtdMonitor.handleDTD(reader);
- translet.setDTDMonitor(dtdMonitor);
-
- // Parse the input document
- reader.parse(url);
-
- return dom;
- }
-
- /**
* Generates HTML from a basic error message and an exception
*/
private void errorMsg(PrintWriter out, Exception e, String msg) {
@@ -147,39 +107,27 @@
out.println(nullErrorMsg);
}
else {
- // Instanciate a translet object (inherits AbstractTranslet)
- Class tc = Class.forName(transletName);
- AbstractTranslet translet = (AbstractTranslet)tc.newInstance();
-
- // Read input document from the DOM cache
- DOMImpl dom = getDOM(document, translet);
-
- // Create output handler
- TransletOutputHandlerFactory tohFactory =
- TransletOutputHandlerFactory.newInstance();
- tohFactory.setOutputType(TransletOutputHandlerFactory.STREAM);
- tohFactory.setEncoding(translet._encoding);
- tohFactory.setOutputMethod(translet._method);
- tohFactory.setWriter(out);
-
- // Start the transformation
- final long start = System.currentTimeMillis();
- translet.transform(dom, tohFactory.getTransletOutputHandler());
- final long done = System.currentTimeMillis() - start;
- out.println("<!-- transformed by XSLTC in "+done+"msecs -->");
+ TransformerFactory tf = TransformerFactory.newInstance();
+ try {
+ tf.setAttribute("use-classpath", Boolean.TRUE);
+ } catch (IllegalArgumentException iae) {
+ System.err.println(
+ "Could not set XSLTC-specific TransformerFactory "
+ + "attributes. Transformation failed.");
+ }
+
+ Transformer t =
+ tf.newTransformer(new StreamSource(transletName));
+
+ // Do the actual transformation
+ final long start = System.currentTimeMillis();
+ t.transform(new StreamSource(document),
+ new StreamResult(out));
+ final long done = System.currentTimeMillis() - start;
+ out.println("<!-- transformed by XSLTC in "+done+"msecs -->");
}
}
- catch (IOException e) {
- errorMsg(out, e, "Could not locate source document: "+document);
- }
- catch (ClassNotFoundException e) {
- errorMsg(out, e, "Could not locate the translet class: "+
- transletName);
- }
- catch (SAXException e) {
- errorMsg(out, e, "Error parsing document "+document);
- }
catch (Exception e) {
errorMsg(out, e, "Impossible state reached.");
}
@@ -194,7 +142,7 @@
*
*/
public void setSessionContext(SessionContext context) {
- _context = context;
+ m_context = context;
}
// General EJB entry points
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