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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=5210 INCREMENTAL, Xerces-2.0.0b3 and root element namespace declaration causes error Summary: INCREMENTAL, Xerces-2.0.0b3 and root element namespace declaration causes error Product: XalanJ2 Version: 2.2.x Platform: PC OS/Version: Windows NT/2K Status: NEW Severity: Normal Priority: Other Component: org.apache.xalan.processor AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] CC: [EMAIL PROTECTED] Using Xalan-Java 2.2.D13 and Xerces-Java 2.0.0 Beta 3 create a TransformerFactory and set the FEATURE_INCREMENTAL attribute to true: > TransformerFactory factory = TransformerFactory.newInstance(); > > factory.setAttribute(TransformerFactoryImpl.FEATURE_INCREMENTAL, > Boolean.TRUE); If you now attempt to transform an XML document that declares a namespace in the root element then the following error is reported: > The root element is required in a well-formed document. This does error does not occur in any the following situations: 1. You use the version of Xerces (apparently 1.4.3) that ships with Xalan. 2. You don't set the FEATURE_INCREMENTAL attribute to true. 3. The root element of the XML document does not declare a namespace. (Declaring a namespace in any element other than the root always works without problem.) Below I've included a Java file 'Process.java' along with a trivial XSL stylesheet 'test.xsl' and an XML document 'test.xml' that declares a namespace in the the root element to demonstrates this problem. The following shows how to compile and run this program. I've renamed the Xerces JAR file that came with Xalan to 'xalan-xerces.jar' and the one that comes with Xerces 2.0.0 Beta 3 to 'xerces-2.0.0b3.jar'. ------------------------------------------------------------------------ javac -classpath xalan.jar:xml-apis.jar Process.java > java \ -classpath .:xalan.jar:xml-apis.jar:xalan-xerces.jar \ Process test.xsl test.xml No errors. > java \ -classpath .:xalan.jar:xml-apis.jar:xerces-2.0.0b3.jar \ Process test.xsl test.xml No errors. > java \ -classpath .:xalan.jar:xml-apis.jar:xalan-xerces.jar \ Process -incremental test.xsl test.xml No errors. > java \ -classpath .:xalan.jar:xml-apis.jar:xerces-2.0.0b3.jar \ Process -incremental test.xsl test.xml [Fatal Error] test.xml:6:2: The root element is required in a well-formed document. ------------------------------------------------------------------------ File: Process.java ------------------------------------------------------------------------ import javax.xml.transform.sax.SAXTransformerFactory; import javax.xml.transform.stream.StreamSource; import javax.xml.transform.stream.StreamResult; import javax.xml.transform.TransformerFactory; import javax.xml.transform.Templates; import javax.xml.transform.Transformer; import org.apache.xml.utils.DefaultErrorHandler; import org.apache.xalan.processor.TransformerFactoryImpl; import java.io.PrintWriter; public class Process { public Process(String xslFilename, String xmlFilename, boolean incremental) { try { StreamSource xslSource = new StreamSource(xslFilename); StreamSource xmlSource = new StreamSource(xmlFilename); TransformerFactory factory = TransformerFactory.newInstance(); Templates stylesheet = factory.newTemplates(xslSource); StreamResult result = new StreamResult(System.out); if (incremental) { factory.setAttribute( TransformerFactoryImpl.FEATURE_INCREMENTAL, Boolean.TRUE); } Transformer transformer = stylesheet.newTransformer(); transformer.transform(xmlSource, result); } catch (Throwable throwable) { PrintWriter writer = new PrintWriter(System.err, true); DefaultErrorHandler.printLocation(writer, throwable); } } private static void usage() { System.err.println("Usage: Process [-incremental] stylesheet.xsl file.xml"); System.exit(1); } public static void main(String args[]) { boolean incremental = false; int pos = 0; if (args.length == 3) { if (!args[0].equals("-incremental")) usage(); pos++; incremental = true; } else if (args.length != 2) usage(); new Process(args[pos], args[pos + 1], incremental); } } ------------------------------------------------------------------------ File: test.xml ------------------------------------------------------------------------ <?xml version="1.0"?> <!-- <message> --> <message xmlns="x-schema:schema.xml"> </message> ------------------------------------------------------------------------ File: test.xsl ------------------------------------------------------------------------ <?xml version="1.0"?> <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform";> </xsl:stylesheet>
