hi, you don't use the writeDOMsession in a proper way : the "dom-name" represents the name of the DOM stored in session the "dom-root-element" does NOT represent the root node of the stored DOM (leading to something like : <dom><Elements>....</Elements></dom>) , but the trigger element of the incoming SAX events which causes the Transformation to begin. In other words, you may try <map:parameter name="dom-root-element" value="Elements"/> and it may match your needs.
KOZLOV Roman wrote: >Hello Christian, > >Thank you very much for response. I've not found any "designations" substring in >core.log. For the moment I've divided the match on two matches - one for read and >one for write (just for tests). >The match for write is: > > <map:match pattern="get_lub"> > <map:generate >src="xmldb:xindice://localhost:4080/db/data/somecollection/#//Some_Element"/> > <map:transform src="stylesheets/render_query.xsl"/> > <map:transform type="writeDOMsession"> > <map:parameter name="dom-name" value="designations"/> > <map:parameter name="dom-root-element" value="dom"/> > </map:transform> > <map:serialize type="xml"/> > </map:match> > >For this match I get empty response. >What's the matter? If I comment writeDOMsession transformer then I get xml like >this: > > <?xml version="1.0" encoding="iso-8859-1" ?> > <Elements xmlns:collection="http://apache.org/cocoon/xmldb/1.0";> > <Element id="ID_XXX">. . . </Element> >. . . > </Elements> > >However, when writeDOMsession transformer is used then response is empty and in >core.log I can see: > >HttpProcessor[8080][0]/XMLDBSource: Querying collection >xmldb:xindice://localhost:4080/db/data/somecollection/; query= //Some_Element >FATAL_E (2002-03-21) 16:54.20:649 [core.xslt-processor] (/bdl/get_lub) >HttpProcessor[8080][0]/TraxErrorHandler: Error in TraxTransformer: >javax.xml.transform.TransformerException: java.lang.NullPointerException >javax.xml.transform.TransformerException: java.lang.NullPointerException > at >org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1230) > > at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:3139) > at java.lang.Thread.run(Thread.java:484) >--------- >java.lang.NullPointerException > at >org.apache.cocoon.transformation.WriteDOMSessionTransformer.storePrefixMapping(WriteDOMSessionTransformer.java:183) > > at >org.apache.cocoon.transformation.WriteDOMSessionTransformer.startPrefixMapping(WriteDOMSessionTransformer.java:120) > > at >org.apache.xalan.transformer.ResultTreeHandler.startAndAddPrefixMappings(ResultTreeHandler.java:1107) > > at >org.apache.xalan.transformer.ResultTreeHandler.flushPending(ResultTreeHandler.java:941) > > at >org.apache.xalan.transformer.ResultTreeHandler.endElement(ResultTreeHandler.java:306) > > at >org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:716) > at >org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2186) > > at >org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2012) > > at >org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1175) > > at org.apache.xalan.transformer.TransformerImpl.run(TransformerImpl.java:3139) > at java.lang.Thread.run(Thread.java:484) > > > Looking forward to your help. > Thank you in advance. > Roman > > >Christian Haul wrote: > >>On 21.Mar.2002 -- 12:07 PM, KOZLOV Roman wrote: >> >>>processed, so that writeDOMsession is called always. Could you please >>>point to errors? >>> >>> <map:match pattern="get_lub"> >>> <map:match type="sessionstate" pattern="**"> >>> <map:parameter name="attribute-name" value="designations"/> >>> <map:transform type="readDOMsession"> >>> <map:parameter name="dom-name" value="designations"/> >>> <map:parameter name="trigger-element" value="/"/> >>> <map:parameter name="position" value="in"/> >>> </map:transform> >>> <map:serialize type="xml"/> >>> </map:match> >>> >>> <map:generate >>>src="xmldb:xindice://localhost:4080/db/data/somecollection/#//Some_Element"/> >>> >>> <map:transform src="stylesheets/render_query.xsl"/> >>> <map:transform type="writeDOMsession"> >>> <map:parameter name="dom-name" value="designations"/> >>> <map:parameter name="dom-root-element" value="dom"/> >>> </map:transform> >>> <map:serialize type="xml"/> >>> </map:match> >>> >>Roman, >>you seem to be missing a <map:generate/> in the upper >>pipeline. Anyway, could you check with core.log (?) that your session >>actually contains an attribute called "designations"? >> >> Chris. >> >>-- >>C h r i s t i a n H a u l >>[EMAIL PROTECTED] >> fingerprint: 99B0 1D9D 7919 644A 4837 7D73 FEF9 6856 335A 9E08 >> >>--------------------------------------------------------------------- >>Please check that your question has not already been answered in the >>FAQ before posting. <http://xml.apache.org/cocoon/faqs.html> >> >>To unsubscribe, e-mail: <[EMAIL PROTECTED]> >>For additional commands, e-mail: <[EMAIL PROTECTED]> >> >>--------------------------------------------------------------------- >>Please check that your question has not already been answered in the >>FAQ before posting. <http://xml.apache.org/cocoon/faqs.html> >> >>To unsubscribe, e-mail: <[EMAIL PROTECTED]> >>For additional commands, e-mail: <[EMAIL PROTECTED]> >> --------------------------------------------------------------------- Please check that your question has not already been answered in the FAQ before posting. <http://xml.apache.org/cocoon/faqs.html> To unsubscribe, e-mail: <[EMAIL PROTECTED]> For additional commands, e-mail: <[EMAIL PROTECTED]>
