Cédric, Thank you very much for your help. I've changed dom-root-element according to your remark (have set it to "Elements"), but it was also necessary to remove "xmlns:collection" namespace declaration to get it work. So I've modified stylesheet element in my xsl like this:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform"; xmlns:collection="http://apache.org/cocoon/xmldb/1.0"; exclude-result-prefixes="collection"> Now "map:match" for writeDOMsession returns correct xml, however it seems that it is not stored in a session, because I can't read it in "map:match" for readDOMsession. There is still no "designations" substring in cocoon's log's. As a result of read request I get just the initial xml from generator's src without content which is proposed to be stored in a session. Pattern for reading is: <map:match pattern="get_lub2"> <map:generate src="data/elems_1.xml"/> <map:transform type="readDOMsession"> <map:parameter name="dom-name" value="designations"/> <map:parameter name="trigger-element" value="Elements"/> <map:parameter name="position" value="in"/> </map:transform> <map:serialize type="xml"/> </map:match> where data/elems_1.xml (as well as a result of this match) is: <?xml version="1.0" encoding="iso-8859-1"?> <Elements/> Why read/writeDOMsession don't work here? In sitemap.log I can see ERROR messages "no session object". What does it mean? Should I create a session object myself? If yes, how it is better to do? DEBUG (2002-03-21) 19:04.04:511 [sitemap.transformer.writeDOMsession] (/bdl/get_lub) HttpProcessor[8080][4]/WriteDOMSessionTransformer: WriteSessionTransformer: setup ERROR (2002-03-21) 19:04.04:511 [sitemap.transformer.writeDOMsession] (/bdl/get_lub) HttpProcessor[8080][4]/WriteDOMSessionTransformer: WriteSessionTransformer: no session object DEBUG (2002-03-21) 19:04.04:521 [sitemap.generator.file] (/bdl/get_lub) HttpProcessor[8080][4]/FileGenerator: processing file xmldb:xindice://localhost:4080/db/data/somecollection/#//Some_Element DEBUG (2002-03-21) 19:04.04:521 [sitemap.generator.file] (/bdl/get_lub) HttpProcessor[8080][4]/FileGenerator: file resolved to xmldb:xindice://localhost:4080/db/data/somecollection/ ERROR (2002-03-21) 19:05.50:884 [sitemap.transformer.readDOMsession] (/bdl/get_lub2) HttpProcessor[8080][4]/ReadDOMSessionTransformer: ReadSessionTransformer: no session object Thank you for your help. Roman Cédric Damioli wrote: > 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]> --------------------------------------------------------------------- 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]>
