XLTC: variable node-sets in x-path predicates

["Voytenko, Dimitry" <dv...@sectordatallc.com>]

Hi,

I encountered following problem with following xml/xslt pair (I tried it
with Xalan/xsltc 2.4.D1 build):
XML is:
<?xml version="1.0"?>
<config>
        <period-types>
                <period-type id="fn" label="Q#"/>
        </period-types>
        <fields>
                <field name="f1">
                        <period type="fn"/>
                </field>
        </fields>
</config>

XSLT is:
<?xml version="1.0" encoding="ISO-8859-1"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">

<xsl:output method="xml"/>

<xsl:template match="/">
        <xsl:variable name="period-type"
select="config/period-types/period-type"/>
        <fields>
                <xsl:for-each select="config/fields/field">
                        <xsl:variable name="period" select="period"/>
                        <field name="{@name}">
                                <period type="{$period/@type}"
label="{$period-type[@id = $period/@type]/@label}"/>
                        </field>
                </xsl:for-each>
        </fields>
</xsl:template>

</xsl:stylesheet>


Using Xalan gives result (which is correct):
<?xml version="1.0" encoding="UTF-8"?>
<fields>
	<field name="f1">
		<period label="Q#" type="fn"/>
	</field>
</fields>

Using XSLTC gives result (not correct):
<?xml version="1.0" encoding="UTF-8"?>
<fields>
	<field name="f1">
		<period type="fn" label=""/>
	</field>
</fields>

As you can see, in the XSLTC result attribute @label is empty, while it
should be the same as in case of Xalan usage. So it looks like X-Path
expression "$period-type[@id = $period/@type]/@label" doesn't work correctly
in case of xsltc. To be more exact I think "$period/@type" part in predicate
is not executed right, b/c if you'd replace it with constant value
everything will be fine.

Have anyone reported this problem? I didn't find it in bugzilla. I can go
ahead and submit it as a xsltc bug there. I didn't test it with latest Xalan
build from CVS so it could have been fixed already.

Thanks,
Dmitry

Re: XLTC: variable node-sets in x-path predicates

[Tom Amiro <To...@Sun.COM>]

Dimitry,

I verified this is still a problem in the latest build, so please 
put in a bug.

Tom

"Voytenko, Dimitry" wrote:
> 
> Hi,
> 
> I encountered following problem with following xml/xslt pair (I tried it
> with Xalan/xsltc 2.4.D1 build):
> XML is:
> <?xml version="1.0"?>
> <config>
>         <period-types>
>                 <period-type id="fn" label="Q#"/>
>         </period-types>
>         <fields>
>                 <field name="f1">
>                         <period type="fn"/>
>                 </field>
>         </fields>
> </config>
> 
> XSLT is:
> <?xml version="1.0" encoding="ISO-8859-1"?>
> <xsl:stylesheet version="1.0"
> xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
> 
> <xsl:output method="xml"/>
> 
> <xsl:template match="/">
>         <xsl:variable name="period-type"
> select="config/period-types/period-type"/>
>         <fields>
>                 <xsl:for-each select="config/fields/field">
>                         <xsl:variable name="period" select="period"/>
>                         <field name="{@name}">
>                                 <period type="{$period/@type}"
> label="{$period-type[@id = $period/@type]/@label}"/>
>                         </field>
>                 </xsl:for-each>
>         </fields>
> </xsl:template>
> 
> </xsl:stylesheet>
> 
> Using Xalan gives result (which is correct):
> <?xml version="1.0" encoding="UTF-8"?>
> <fields>
>         <field name="f1">
>                 <period label="Q#" type="fn"/>
>         </field>
> </fields>
> 
> Using XSLTC gives result (not correct):
> <?xml version="1.0" encoding="UTF-8"?>
> <fields>
>         <field name="f1">
>                 <period type="fn" label=""/>
>         </field>
> </fields>
> 
> As you can see, in the XSLTC result attribute @label is empty, while it
> should be the same as in case of Xalan usage. So it looks like X-Path
> expression "$period-type[@id = $period/@type]/@label" doesn't work correctly
> in case of xsltc. To be more exact I think "$period/@type" part in predicate
> is not executed right, b/c if you'd replace it with constant value
> everything will be fine.
> 
> Have anyone reported this problem? I didn't find it in bugzilla. I can go
> ahead and submit it as a xsltc bug there. I didn't test it with latest Xalan
> build from CVS so it could have been fixed already.
> 
> Thanks,
> Dmitry

-- 
 Tom Amiro -- SQA Engineer
 Sun XML Technology Development
 voice: 781-442-0589 Fax: 781-442-1437
 eMail: tom.amiro@.sun.com