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Posted to dev@xalan.apache.org by "Henry Zongaro (JIRA)" <xa...@xml.apache.org> on 2009/11/23 20:45:40 UTC
[jira] Commented: (XALANJ-2510) Ability to set non tree fragment
variable using an extension element (PATCH SUPPLIED)
[ https://issues.apache.org/jira/browse/XALANJ-2510?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12781581#action_12781581 ]
Henry Zongaro commented on XALANJ-2510:
---------------------------------------
Adam, could I ask you elaborate on the motivation for this change? It's not clear to me why using an extension function instead wouldn't work. Having an extension element return something other nodes feels odd to me for XSLT 1.0.
> Ability to set non tree fragment variable using an extension element (PATCH SUPPLIED)
> -------------------------------------------------------------------------------------
>
> Key: XALANJ-2510
> URL: https://issues.apache.org/jira/browse/XALANJ-2510
> Project: XalanJ2
> Issue Type: Improvement
> Security Level: No security risk; visible to anyone(Ordinary problems in Xalan projects. Anybody can view the issue.)
> Components: Xalan-extensions
> Affects Versions: The Latest Development Code
> Reporter: Adam Jenkins
> Fix For: The Latest Development Code
>
> Attachments: XALANJ-2510.patch
>
>
> When using extension elements, there is no way to set a non XRTreeFrag related variable.
> For example, say you have:
> <xsl:variable name="myvar">
> <my:extension someAttribute="somevalue"/>
> </xsl:variable>
> If my:extension wants to set a tree fragment, string or nodeset into myvar, that's not a problem, however if it wants to set a java object, currently there is no mechanism for that (any java object passed either returned from the method or passed to XSLProcessorContext.outputToResultTree is toString()'ed before being passed back to the ElemVariable.getValue() method).
> The proposed change (patch supplied) is to supply an optional variable on ElemVariable.java whereby child extension elements can call up to their parent and set an XPath to be evaluated after the extension element has finished processing.
> This requires only very minor modification to the ElemVariable.getValue method to check this variable.
> This also ensures that this is optional functionality and will not affect that basic Xalan processing.
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