[jira] Resolved: (XALANJ-1434) org.apache.xpath.axes.AxesWalker getLastPos: duplicate predicate testing

["Kevin Cormier (JIRA)" <xa...@xml.apache.org>]

     [ https://issues.apache.org/jira/browse/XALANJ-1434?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kevin Cormier resolved XALANJ-1434.
-----------------------------------

       Resolution: Fixed
    Fix Version/s: The Latest Development Code

> org.apache.xpath.axes.AxesWalker getLastPos: duplicate predicate testing
> ------------------------------------------------------------------------
>
>                 Key: XALANJ-1434
>                 URL: https://issues.apache.org/jira/browse/XALANJ-1434
>             Project: XalanJ2
>          Issue Type: Bug
>          Components: XPath
>    Affects Versions: 2.5
>         Environment: Operating System: All
> Platform: All
>            Reporter: Dimitry E Voytenko
>             Fix For: The Latest Development Code
>
>         Attachments: lastpos.patch
>
>
> In class org.apache.xpath.axes.AxesWalker method getLastPos there's a fragment
> of code:
>  walker.setPredicateCount(walker.getPredicateCount() - 1);
> Thus, in expression x[last() != position()][true()] first predicate is checked 
> twice.
> XML sample:
> <?xml version="1.0" encoding="UTF-8"?>
> <doc>
>    <item>1</item>
>    <item>2</item>
>    <item>3</item>
> </doc>
> Result of 
>  <xsl:copy-of select="/doc/item[last() != position()][true()]"/>
> is
>  <item>1</item>
> and should be
>  <item>1</item>
>  <item>2</item>
> XSL work-around:
>  <xsl:copy-of select="(/doc/item[last() != position()])[true()]"/>
> Java code fix: replace code line in org.apache.xpath.axes.AxesWalker getLastPos:
>  walker.setPredicateCount(walker.getPredicateCount() - 1);
> to
>  walker.setPredicateCount(this.m_predicateIndex);

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