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Posted to dev@xalan.apache.org by bu...@apache.org on 2003/06/19 15:03:28 UTC
DO NOT REPLY [Bug 20908] New: -
NullPointerException when sorting using a child of a variable.
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=20908
NullPointerException when sorting using a child of a variable.
Summary: NullPointerException when sorting using a child of a
variable.
Product: XalanJ2
Version: 2.5
Platform: Other
OS/Version: Other
Status: NEW
Severity: Normal
Priority: Other
Component: Xalan
AssignedTo: xalan-dev@xml.apache.org
ReportedBy: mstephenson@openworld.co.uk
It would seem that xalan 2.5.1 doesn't like doing anything of the form:
<xsl:apply-templates select="people">
<xsl:sort select="$request/parameter=name"/>
</xsl:apply-templates>
ie. sorting a set of elements based on whether one of their children coincides
with a child of a variable.
Previous versions of xalan (2.4.1 and 2.1.0 are the only two I've tried) have
allowed this.
It seems the easiest way to work around this is to reference the element
represented by the variable absolutely, ie in the example below replace
'$request' with 'request'.
Although the example below is demonstrated from the command line the problem is
not specific to it.
Thanks for you time!
mstephen@monkey:~$ /usr/local/java/jdk/bin/java -version
java version "1.3.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.1-b24)
Java HotSpot(TM) Client VM (build 1.3.1-b24, mixed mode)
mstephen@monkey:~$ cat broken.xsl
<?xml version='1.0'?>
<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">
<xsl:output method="html"/>
<xsl:template match="/">
<xsl:variable name="request" select="request"/>
<xsl:apply-templates select="people">
<xsl:sort select="$request/parameter=name"/>
</xsl:apply-templates>
</xsl:template>
</xsl:stylesheet>
mstephen@monkey:~$ /usr/local/java/jdk/bin/java org.apache.xalan.xslt.Process
-XSL broken.xsl -EDUMP
javax.xml.transform.TransformerConfigurationException:
javax.xml.transform.TransformerException: java.lang.NullPointerException
at
org.apache.xalan.processor.TransformerFactoryImpl.newTemplates(TransformerFactoryImpl.java:922)
at org.apache.xalan.xslt.Process.main(Process.java:759)
---------
javax.xml.transform.TransformerException: java.lang.NullPointerException
at
org.apache.xalan.processor.TransformerFactoryImpl.newTemplates(TransformerFactoryImpl.java:916)
at org.apache.xalan.xslt.Process.main(Process.java:759)
---------
java.lang.NullPointerException
at org.apache.xpath.operations.Variable.getElemVariable(Variable.java:312)
at org.apache.xpath.operations.Variable.getAnalysisBits(Variable.java:362)
at
org.apache.xpath.axes.FilterExprWalker.getAnalysisBits(FilterExprWalker.java:305)
at org.apache.xpath.axes.WalkingIterator.getAnalysisBits(WalkingIterator.java:129)
at
org.apache.xpath.axes.WalkingIteratorSorted.fixupVariables(WalkingIteratorSorted.java:235)
at org.apache.xpath.operations.Operation.fixupVariables(Operation.java:91)
at org.apache.xpath.XPath.fixupVariables(XPath.java:111)
at org.apache.xalan.templates.ElemSort.compose(ElemSort.java:382)
at org.apache.xalan.templates.ElemForEach.compose(ElemForEach.java:157)
at org.apache.xalan.templates.ElemCallTemplate.compose(ElemCallTemplate.java:150)
at
org.apache.xalan.templates.ElemApplyTemplates.compose(ElemApplyTemplates.java:164)
at
org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:358)
at
org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:363)
at
org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:363)
at org.apache.xalan.templates.StylesheetRoot.recompose(StylesheetRoot.java:338)
at
org.apache.xalan.processor.StylesheetHandler.endDocument(StylesheetHandler.java:479)
at org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at
org.apache.xalan.processor.TransformerFactoryImpl.newTemplates(TransformerFactoryImpl.java:892)
at org.apache.xalan.xslt.Process.main(Process.java:759)
---------
java.lang.NullPointerException
at org.apache.xpath.operations.Variable.getElemVariable(Variable.java:312)
at org.apache.xpath.operations.Variable.getAnalysisBits(Variable.java:362)
at
org.apache.xpath.axes.FilterExprWalker.getAnalysisBits(FilterExprWalker.java:305)
at org.apache.xpath.axes.WalkingIterator.getAnalysisBits(WalkingIterator.java:129)
at
org.apache.xpath.axes.WalkingIteratorSorted.fixupVariables(WalkingIteratorSorted.java:235)
at org.apache.xpath.operations.Operation.fixupVariables(Operation.java:91)
at org.apache.xpath.XPath.fixupVariables(XPath.java:111)
at org.apache.xalan.templates.ElemSort.compose(ElemSort.java:382)
at org.apache.xalan.templates.ElemForEach.compose(ElemForEach.java:157)
at org.apache.xalan.templates.ElemCallTemplate.compose(ElemCallTemplate.java:150)
at
org.apache.xalan.templates.ElemApplyTemplates.compose(ElemApplyTemplates.java:164)
at
org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:358)
at
org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:363)
at
org.apache.xalan.templates.StylesheetRoot.composeTemplates(StylesheetRoot.java:363)
at org.apache.xalan.templates.StylesheetRoot.recompose(StylesheetRoot.java:338)
at
org.apache.xalan.processor.StylesheetHandler.endDocument(StylesheetHandler.java:479)
at org.apache.xerces.parsers.AbstractSAXParser.endDocument(Unknown Source)
at org.apache.xerces.impl.XMLDocumentScannerImpl.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityManager.endEntity(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.load(Unknown Source)
at org.apache.xerces.impl.XMLEntityScanner.skipSpaces(Unknown Source)
at
org.apache.xerces.impl.XMLDocumentScannerImpl$TrailingMiscDispatcher.dispatch(Unknown
Source)
at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
Source)
at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
at
org.apache.xalan.processor.TransformerFactoryImpl.newTemplates(TransformerFactoryImpl.java:892)
at org.apache.xalan.xslt.Process.main(Process.java:759)