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Posted to dev@xalan.apache.org by "Henry Zongaro (JIRA)" <xa...@xml.apache.org> on 2005/06/21 21:30:31 UTC
[jira] Updated: (XALANJ-2151) XSLTC incorrectly optimizes predicates containing numeric values
[ http://issues.apache.org/jira/browse/XALANJ-2151?page=all ]
Henry Zongaro updated XALANJ-2151:
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Attachment: j2151.xsl
j2151.xml
j2151.out
Attaching example stylesheet, input document and expected result. The stylesheet should select those child elements of the "doc" element whose position equals the number of attributes of the child element. Instead, XSLTC selects the child element of "doc" whose position equals the number of attributes of "doc".
> XSLTC incorrectly optimizes predicates containing numeric values
> ----------------------------------------------------------------
>
> Key: XALANJ-2151
> URL: http://issues.apache.org/jira/browse/XALANJ-2151
> Project: XalanJ2
> Type: Bug
> Components: XPath-function
> Versions: CurrentCVS
> Reporter: Henry Zongaro
> Priority: Critical
> Attachments: j2151.out, j2151.xml, j2151.xsl
>
> XSLTC attempts to optimize predicates whose values are numeric by wrapping the iterator for the expression that is being filtered with an NthPositionIterator. The latter iterator skips directly to the relevant item in the nested iterator. The problem is that this optimization only applies if the value of the predicate is unaffected by the context item, but XSLTC is not preventing the optimization from being applied in all such cases. I will attach an example that demonstrates the problem.
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