Problems using Saxon

[Jose Miguel Vieira]

Hello,   I’m trying to add saxon 8.8 to cocoon 2.1.9 installed under tomcat 5.5.   I followed the instruction in cocoon wiki (http://wiki.apache.org/cocoon/Saxon): 1. Copied saxon jar files into WEB-INF/lib   2. Added a new component to cocoon.xconf: <component class="org.apache.cocoon.components.xslt.TraxProcessor" logger="core.xslt-processor"     role="org.apache.excalibur.xml.xslt.XSLTProcessor/saxon">     <parameter name="use-store" value="true" />     <parameter name="transformer-factory" value="net.sf.saxon.TransformerFactoryImpl" />   </component>   3. Added the transformer to the sitempap.xmap file: <map:transformer name="xslt-saxon" pool-grow="2" pool-max="32" pool-min="8" src="">         <use-request-parameters>false</use-request-parameters>         <use-browser-capabilities-db>false</use-browser-capabilities-db>         <xslt-processor-role>saxon</xslt-processor-role>       </map:transformer>   4. Restarted tomcat.   But when I try to access my application I get the following error message (stacktrace included below): java.lang.NullPointerException:   Cocoon stacktrace[hide] Failed to process pipeline file:/D:/develop/applications/apache/tomcat-5.5.17/webapps/cocoon/crsbi/sitemap.xmap - 150:38 <map:serialize type="html"> file:/D:/develop/applications/apache/tomcat-5.5.17/webapps/cocoon/crsbi/sitemap.xmap - 145:69 <map:transform type="xslt-saxon"> file:/D:/develop/applications/apache/tomcat-5.5.17/webapps/cocoon/sitemap.xmap - 944:69 <map:mount>   Any ideas why this might be happening and possible solutions?   Thanks in advance, Miguel   -----   Jose Miguel Vieira Centre for Computing in the Humanities King's College London Kay House 7, Arundel Street London WC2R 3DX   Email: [EMAIL PROTECTED] Tel: +44 (0)20 78 48 12 42 Fax: +44 (0)20 78 48 29 80   Java stacktrace[hide] java.lang.NullPointerException         at net.sf.saxon.expr.ComputedExpression.gatherSlotsUsed(ComputedExpression.java:531)         at net.sf.saxon.expr.ComputedExpression.gatherSlotsUsed(ComputedExpression.java:543)         at net.sf.saxon.expr.ComputedExpression.gatherSlotsUsed(ComputedExpression.java:543)         at net.sf.saxon.expr.ComputedExpression.gatherSlotsUsed(ComputedExpression.java:543)         at net.sf.saxon.expr.ComputedExpression.gatherSlotsUsed(ComputedExpression.java:543)         at net.sf.saxon.expr.ComputedExpression.gatherSlotsUsed(ComputedExpression.java:543)         at net.sf.saxon.expr.ComputedExpression.getSlotsUsed(ComputedExpression.java:517)         at net.sf.saxon.value.Closure.make(Closure.java:96)         at net.sf.saxon.expr.ExpressionTool.evaluate(ExpressionTool.java:346)         at net.sf.saxon.expr.LetExpression.eval(LetExpression.java:182)         at net.sf.saxon.expr.LetExpression.iterate(LetExpression.java:163)         at net.sf.saxon.expr.ComputedExpression.effectiveBooleanValue(ComputedExpression.java:626)         at net.sf.saxon.instruct.Choose.processLeavingTail(Choose.java:325)         at net.sf.saxon.instruct.Block.processLeavingTail(Block.java:353)         at net.sf.saxon.instruct.Instruction.process(Instruction.java:91)         at net.sf.saxon.instruct.ElementCreator.processLeavingTail(ElementCreator.java:250)         at net.sf.saxon.instruct.Instruction.process(Instruction.java:91)         at net.sf.saxon.expr.LetExpression.process(LetExpression.java:221)         at net.sf.saxon.instruct.ForEach.processLeavingTail(ForEach.java:244)         at net.sf.saxon.instruct.Block.processLeavingTail(Block.java:353)         at net.sf.saxon.instruct.Instruction.process(Instruction.java:91)         at net.sf.saxon.instruct.ElementCreator.processLeavingTail(ElementCreator.java:250)         at net.sf.saxon.instruct.Choose.processLeavingTail(Choose.java:338)         at net.sf.saxon.instruct.Instruction.process(Instruction.java:91)         at net.sf.saxon.instruct.ForEach.processLeavingTail(ForEach.java:244)         at net.sf.saxon.instruct.Template.applyLeavingTail(Template.java:99)         at net.sf.saxon.instruct.ApplyTemplates.applyTemplates(ApplyTemplates.java:319)         at net.sf.saxon.instruct.ApplyTemplates.apply(ApplyTemplates.java:189)         at net.sf.saxon.instruct.ApplyTemplates.process(ApplyTemplates.java:149)         at net.sf.saxon.instruct.ElementCreator.processLeavingTail(ElementCreator.java:250)         at net.sf.saxon.instruct.Copy.processLeavingTail(Copy.java:152)         at net.sf.saxon.instruct.Template.applyLeavingTail(Template.java:99)         at net.sf.saxon.instruct.Template.apply(Template.java:78)         at net.sf.saxon.instruct.ApplyImports.processLeavingTail(ApplyImports.java:180)         at net.sf.saxon.instruct.Template.applyLeavingTail(Template.java:99)         at net.sf.saxon.instruct.ApplyTemplates.applyTemplates(ApplyTemplates.java:319)         at net.sf.saxon.instruct.ApplyTemplates.apply(ApplyTemplates.java:189)         at net.sf.saxon.instruct.ApplyTemplates.process(ApplyTemplates.java:149)         at net.sf.saxon.instruct.ElementCreator.processLeavingTail(ElementCreator.java:250)         at net.sf.saxon.instruct.Copy.processLeavingTail(Copy.java:152)         at net.sf.saxon.instruct.Template.applyLeavingTail(Template.java:99)         at net.sf.saxon.instruct.Template.apply(Template.java:78)         at net.sf.saxon.instruct.ApplyImports.processLeavingTail(ApplyImports.java:180)         at net.sf.saxon.instruct.Template.applyLeavingTail(Template.java:99)         at net.sf.saxon.instruct.ApplyTemplates.applyTemplates(ApplyTemplates.java:319)         at net.sf.saxon.instruct.ApplyTemplates.apply(ApplyTemplates.java:189)         at net.sf.saxon.instruct.ApplyTemplates.processLeavingTail(ApplyTemplates.java:153)         at net.sf.saxon.instruct.Block.processLeavingTail(Block.java:353)         at net.sf.saxon.instruct.Instruction.process(Instruction.java:91)         at net.sf.saxon.instruct.ElementCreator.processLeavingTail(ElementCreator.java:250)         at net.sf.saxon.instruct.Block.processLeavingTail(Block.java:353)         at net.sf.saxon.instruct.Instruction.process(Instruction.java:91)         at net.sf.saxon.instruct.ElementCreator.processLeavingTail(ElementCreator.java:250)         at net.sf.saxon.instruct.Block.processLeavingTail(Block.java:353)         at net.sf.saxon.instruct.Instruction.process(Instruction.java:91)         at net.sf.saxon.instruct.ElementCreator.processLeavingTail(ElementCreator.java:250)         at net.sf.saxon.instruct.Block.processLeavingTail(Block.java:353)         at net.sf.saxon.instruct.Instruction.process(Instruction.java:91)         at net.sf.saxon.instruct.ElementCreator.processLeavingTail(ElementCreator.java:250)         at net.sf.saxon.instruct.Template.applyLeavingTail(Template.java:99)         at net.sf.saxon.instruct.ApplyTemplates.applyTemplates(ApplyTemplates.java:319)         at net.sf.saxon.instruct.ApplyTemplates$ApplyTemplatesPackage.processLeavingTail(ApplyTemplates.java:488)         at net.sf.saxon.Controller.transformDocument(Controller.java:1607)         at net.sf.saxon.TransformerHandlerImpl.endDocument(TransformerHandlerImpl.java:133)         at org.apache.cocoon.xml.AbstractXMLPipe.endDocument(AbstractXMLPipe.java:55)         at org.apache.cocoon.transformation.TraxTransformer.endDocument(TraxTransformer.java:585)         at org.apache.cocoon.sitemap.ContentAggregator.generate(ContentAggregator.java:132)         at org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:369)         at org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:480)         at org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:120)         at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)         at org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)         at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)         at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142)         at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)         at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)         at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)         at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176)         at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252)         at org.apache.cocoon.components.treeprocessor.sitemap.MountNode.invoke(MountNode.java:117)         at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)         at org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)         at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)         at org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142)         at org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)         at org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)         at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)         at org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176)         at org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252)         at org.apache.cocoon.Cocoon.process(Cocoon.java:686)         at org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1153)         at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)         at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)         at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)         at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)         at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)         at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)         at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)         at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)         at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)         at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)         at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)         at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)         at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)         at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)         at java.lang.Thread.run(Thread.java:595)