Saxon

Legacy ID: #5845294 Legacy Poster: Andrew Waters (andrew_waters)

Hi, I think I've discovered a bug in the way exceptions are handled by one of the URI Resolver methods. One method can raise an exception and the caller can access it and its messages and all looks well. The other has it's exception "semi-ignored" and Saxon then returns an error for the next line which is actually totally valid. Here's some java to recreate: package saxontest; import java.io.ByteArrayOutputStream; import java.io.PrintStream; import java.io.StringWriter; import java.util.Properties; import javax.xml.transform.Source; import javax.xml.transform.TransformerException; import javax.xml.transform.URIResolver; import javax.xml.transform.stream.StreamResult; import javax.xml.transform.stream.StreamSource; import net.sf.saxon.Configuration; import net.sf.saxon.query.DynamicQueryContext; import net.sf.saxon.query.ModuleURIResolver; import net.sf.saxon.query.StaticQueryContext; import net.sf.saxon.query.XQueryExpression; import net.sf.saxon.trans.XPathException; import com.att.logicalprovisioning.xquery.SaxonErrorListener; public class SaxonBug1 implements URIResolver, ModuleURIResolver { /** * / private static final long serialVersionUID = 1L; // Set a version string from CVS for easy runtime identification public static final String cvsVersionId = "$Revision$ $Date$ $Name$"; private ByteArrayOutputStream errors = new ByteArrayOutputStream(); private Configuration saxonConfig = new Configuration(); /* * @param args */ public static void main(String[] args) { String xml1 = "xquery version &quot;1.0&quot;;"; xml1 += "declare variable $nc3 := 'file:///c:/pmm_test/fail';"; xml1 += "$nc3"; String xml2 = "xquery version &quot;1.0&quot;;"; xml2 += "declare variable $nc3 := doc('file:///c:/pmm_test/fail');"; xml2 += "$nc3"; String xml3 = "xquery version &quot;1.0&quot;;"; xml3 += "import module namespace fail = &quot;fail&quot; at &quot;fail&quot;;"; xml3 += "declare variable $nc3 := doc('file:///c:/pmm_test/fail');"; xml3 += "$nc3"; SaxonBug1 sb1 = new SaxonBug1(); System.out.println("xml 1 = OK - XML produced :: " + sb1.runXQuery(xml1)); System.out.println("\n\nxml 2 = OK - exception works :: " + sb1.runXQuery(xml2)); System.out.println("\n\nxml 3 = OOOERR!!!!!!!!! :: " + sb1.runXQuery(xml3)); System.out.println(net.sf.saxon.Version.getProductTitle()); } public String runXQuery(String xQuery) { String xqResult = ""; // Ensure that the XQuery is not null if ((xQuery == null) || (xQuery.length() == 0)) return "Null/empty XQuery when calling Saxon. An XQuery must be provided"; try { // Prepare the environment for Saxon SaxonErrorListener listener = new SaxonErrorListener(new PrintStream(errors)); getSaxonConfig().setErrorListener(listener); StaticQueryContext staticContext = new StaticQueryContext(getSaxonConfig()); staticContext.setBaseURI(""); // Set up the dynamic context DynamicQueryContext dynamicContext = new DynamicQueryContext(getSaxonConfig()); dynamicContext.setURIResolver(this); staticContext.setModuleURIResolver(this); Properties saxonProps = new Properties(); // Prepare the XQuery XQueryExpression exp; exp = staticContext.compileQuery(xQuery); // Run the XQuery StringWriter out = new StringWriter(); exp.run(dynamicContext, new StreamResult(out), saxonProps); // Collect the content xqResult = out.toString(); } catch (XPathException xpe) { String cause = "Unknown - !!!"; if (xpe.getCause() != null) cause = xpe.getCause().getMessage(); String msg = xpe.getMessageAndLocation(); return "Exception while calling Saxon: " + msg + "; Cause: " + cause; } catch (Exception e) { return "Exception while calling Saxon: " + e.getMessage(); } return xqResult; } private Configuration getSaxonConfig() { return saxonConfig; } public Source resolve(String href, String base) throws TransformerException { if (true) throw new XPathException("resolve 1 exception"); return null; } public StreamSource[] resolve(String arg0, String arg1, String[] arg2) throws XPathException { if (true) throw new XPathException("resolve 2 exception"); return null; } } Sample output: xml 1 = OK - XML produced :: <?xml version="1.0" encoding="UTF-8"?>file:///c:/pmm_test/fail xml 2 = OK - exception works :: Exception while calling Saxon: Exception thrown by URIResolver; SystemID: ; Line#: 1; Column#: -1; Cause: resolve 1 exception xml 3 = OOOERR!!!!!!!!! :: Exception while calling Saxon: XQuery static error in #...ile:///c:/pmm_test/fail');$nc3#: Variable $nc3 has not been declared; SystemID: ; Line#: 1; Column#: 130; Cause: Unknown - !!! SAXON 9.1.0.3 from Saxonica