Hi everybody,
I experienced a very strange behavior of XSLT transformations when trying to prepare an XUpdate query. In particular, such a transformation would not keep the name spaces for XUpdate tags.
The set up is the following: I have a remove eXist 1.0 db installed. It is perfectly accessible via client and XMLDB protocol. I am able to create and delete resources and collectons no problem. I also use topic maps (which are just XML files, some of the tags would use xlink:href attribute), so the goal is to add a set of tags into a resource that contains <topicMap> root tag. This set of tags is generated by an XSLT transformation:
<xmldb:query oid="myTexts.xml" type="update" xmlns:xmldb="http://apache.org/cocoon/xmldb/1.0";>
<xupdate:modifications version="1.0" xmlns:xupdate="http://www.xmldb.org/xupdate";>
<xupdate:append select="/topicMap" xmlns:xupdate="http://www.xmldb.org/xupdate";>
<xupdate:element name="topic" xmlns:xupdate="http://www.xmldb.org/xupdate";>
<xupdate:attribute name="id" xmlns:xupdate="http://www.xmldb.org/xupdate";>
<xsl:value-of select="$textID" xmlns:xlink="http://www.w3.org/1999/xlink"/>
</xupdate:attribute>
<instanceOf>
<topicRef xlink:href="#text" xmlns:xlink="http://www.w3.org/1999/xlink"/>
</instanceOf>
<baseName>
<baseNameString>
<xsl:value-of select="$textLabel"/>
</baseNameString>
</baseName>
<occurrence>
<topicRef xlink:href="#plain-text-format" xmlns:xlink="http://www.w3.org/1999/xlink"/>
</instanceOf>
<resourceRef xlink:href="{$textLink}" xmlns:xlink="http://www.w3.org/1999/xlink"/>
</occurrence>
<occurrence>
<instanceOf>
<topicRef xlink:href="#notes" xmlns:xlink="http://www.w3.org/1999/xlink"/>
</instanceOf>
<resourceData>
<xsl:value-of select="$notes" xmlns:xlink="http://www.w3.org/1999/xlink"/>
</resourceData>
</occurrence>
</xupdate:element>
</xupdate:append>
</xupdate:modifications>
</xmldb:query>
Here is the pipeline that handles the transformation:
<map:match pattern="addText"> <map:generate type="request"/> <map:transform src="addTextParam2SourceWrite.xsl"> <map:parameter name="userName" value="TestName"/> </map:transform>
<map:transform type="xslt" src="addTextParam2-XMLDB.xsl"> <map:parameter name="userName" value="TestName"/> </map:transform>
<map:transform type="xmldb">
<map:parameter name="base" value="xmldb:exist://myhost:8080/exist/xmlrpc/db/cocoon/topicMaps"/>
</map:transform>
<map:serialize type="xml"/>
Once the XSLT transformation takes place, all of the name space declarations for the tags beneath <xupdate:modifications> disappear. I don’t know if that’s what causes the query to fail, but I attempted to skip the xmldb transformer and save the xml output to a file. I manually inserted the name spaces into all of the tags, and run it through a simple pipeline:
<map:match pattern="createCollection">
<map:generate src="createCollection.xml"/>
<map:transform type="xmldb">
<map:parameter name="base" value="xmldb:exist://myhost:8080/exist/xmlrpc/db/test"/>
</map:transform>
<map:serialize type="xml"/>
</map:match>
This query reported to be successfull. What seems to be the problem is the missing name spaces (removed by the xslt transformation).
I tried to use Saxon (same problem) and XSLTC (blank output), but it didn’t help. I don’t know if that matters, but I also have parameter name space-prefixes set to true for the XML parser:
<xml-parser class="org.apache.excalibur.xml.impl.JaxpParser" logger="core.xml-parser" pool-grow="4" pool-max="32" pool-min="8">
<parameter name="validate" value="false"/>
<parameter name="name space-prefixes" value="true"/>
Software uses is Cocoon 2.1.5, eXist 1.0, Tomcat 5.0.19
In case there is anybody who experienced the same problem, plsease, share your knowledge how to make sure that the name space info is not being deleted by XSLT transformation.
Thank you very much in advance.
Best regards, Nick.
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