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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=24894 NullPointerException with document() in a global xsl:variable Summary: NullPointerException with document() in a global xsl:variable Product: XalanJ2 Version: 2.5 Platform: PC OS/Version: Windows XP Status: NEW Severity: Normal Priority: Other Component: org.apache.xpath AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] I am referring an external document using: <xsl:variable name="externaldoc" select="document('external.xml')"/> When I use this inside my transformation as $externaldoc I get a null pointer exception. Moving the xsl:variable declaration from global to inside the xsl:template did not help. Changing the critical occurance of "$externaldoc" in the criticial xpath expression to a direct call to "document ('external.xml')" stops the error. Therefore I suspect it is the reuse of the document element that is causing this problem. Interestingly I use this method in many other places in the same application without this problem. Here I am only counting elements in $externaldoc to obtain some statistics.... <checkEnvironmentExtension> <EnvironmentCheck version="$Revision: 1.23 $"> <environment> <item key="version.DOM.draftlevel">2.0fd</item> <item key="java.class.path">.</item> <item key="version.JAXP">1.1 or higher</item> <item key="java.ext.dirs">C:\Program Files\Java\j2re1.4.2_02\lib\ext</item> <foundJar desc="path" name="xalan.jar">C:\Program Files\Java\j2re1.4.2_02 \lib\endorsed\xalan.jar</foundJar> <foundJar desc="apparent.version" name="xercesImpl.jar">xercesImpl.jar WARNING.present-unknown-version</foundJar> <foundJar desc="path" name="xercesImpl.jar">C:\Program Files\Java\j2re1.4.2_02 \lib\endorsed\xercesImpl.jar</foundJar> <foundJar desc="apis.jar-apparent.version" name="xml">xml-apis.jar present- unknown-version</foundJar> <foundJar desc="apis.jar-path" name="xml">C:\Program Files\Java\j2re1.4.2_02 \lib\endorsed\xml-apis.jar</foundJar> <item key="version.xerces2">Xerces-J 2.6.0</item> <item key="version.xerces1">not-present</item> <item key="version.xalan2_2">Xalan Java 2.5.2</item> <item key="version.xalan1">not-present</item> <item key="version.ant">not-present</item> <item key="java.version">1.4.2_02</item> <item key="version.DOM">2.0</item> <item key="version.crimson">present-unknown-version</item> <item key="sun.boot.class.path">C:\Program Files\Java\j2re1.4.2_02 \lib\endorsed\xalan.jar;C:\Program Files\Java\j2re1.4.2_02 \lib\endorsed\xercesImpl.jar;C:\Program Files\Java\j2re1.4.2_02 \lib\endorsed\xml-apis.jar;C:\Program Files\Java\j2re1.4.2_02 \lib\endorsed\xmlParserAPIs.jar;C:\Program Files\Java\j2re1.4.2_02 \lib\rt.jar;C:\Program Files\Java\j2re1.4.2_02\lib\i18n.jar;C:\Program Files\Java\j2re1.4.2_02\lib\sunrsasign.jar;C:\Program Files\Java\j2re1.4.2_02 \lib\jsse.jar;C:\Program Files\Java\j2re1.4.2_02\lib\jce.jar;C:\Program Files\Java\j2re1.4.2_02\lib\charsets.jar;C:\Program Files\Java\j2re1.4.2_02 \classes</item> <item key="version.SAX">2.0</item> <item key="version.xalan2x">Xalan Java 2.5.2</item> </environment> <status result="OK"/> </EnvironmentCheck> </checkEnvironmentExtension> The full stack trace is: javax.xml.transform.TransformerConfigurationException: javax.xml.transform.TransformerException: java.lang.NullPointerException at org.apache.xalan.processor.TransformerFactoryImpl.newTemplates (TransformerFactoryImpl.java:861) at org.apache.xalan.xslt.Process.main(Process.java:760) Caused by: javax.xml.transform.TransformerException: java.lang.NullPointerException at org.apache.xalan.processor.TransformerFactoryImpl.newTemplates (TransformerFactoryImpl.java:855) ... 1 more Caused by: 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.functions.FunctionOneArg.fixupVariables (FunctionOneArg.java:156) 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:481) 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.XML11Configuration.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:831) ... 1 more --------- javax.xml.transform.TransformerException: java.lang.NullPointerException at org.apache.xalan.processor.TransformerFactoryImpl.newTemplates (TransformerFactoryImpl.java:855) at org.apache.xalan.xslt.Process.main(Process.java:760) Caused by: 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.functions.FunctionOneArg.fixupVariables (FunctionOneArg.java:156) 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:481) 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.XML11Configuration.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:831) ... 1 more --------- 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.functions.FunctionOneArg.fixupVariables (FunctionOneArg.java:156) 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:481) 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.XML11Configuration.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:831) at org.apache.xalan.xslt.Process.main(Process.java:760) --------- 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.functions.FunctionOneArg.fixupVariables (FunctionOneArg.java:156) 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:481) 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.XML11Configuration.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:831) at org.apache.xalan.xslt.Process.main(Process.java:760)
