Subject: Re: [xsl] Option mystery From: "Oleg Konovalov" <olegkon@xxxxxxxxx> Date: Thu, 14 Dec 2006 09:43:38 -0500 |
I understood a part of the problem, that choose is in the for-each block: <xsl:for-each select="$tier/option"> <xsl:choose> <xsl:when test="$tier/option[condition1]"> <----- bug: I removed that "$tier/option[]" ... </xsl:when> <xsl:when test="$alternate-tier/option[condition1]"> ... </xsl:when> </xsl:choose> </xsl:for-each> As soon as I removed that "$tier/option[]", it started working. The funny thing is that it was in production for 2 years - hidden bug...
But is it technically legitimate to have "$alternate-tier/option[]" in the second xsl:when block ? Looks like if similar node exists in parallel tree and matches same conditions, it sets it's value to "N/A". Hmm, I am not sure. What do you think ?
Thank you, Oleg.
> > <xsl:choose> > <xsl:when test="$tier/option[option-num=$cur-option-num and > @rate-increase='true']"> > <option rate-increase="{@rate-increase}"> > <debug1>branch1</debug1> > ...other elements > </option> > </xsl:when> > </xsl:choose> > > A few questions regarding snippet: > 1) is that "option" a predefined XSLT1.0 construct / keyword > / operation ?
If you mean the option written as "<option rate-increase..." then it is a literal result element: an element to be copied to the result.
> I can't find any in the XSLT book.
Look in the index under "literal result element". > > 2) the bug I am trying to fix is that somehow on exit I am > getting a node with <option rate-increase="false"> (that > debug1=branch1 and > option-num=1). How is that possible ? That "branch1" is unique and > can't come from any other place. How can that expression > inside [] fail ?
Perhaps you're confused because the predicate can only return true if @rate-increase is "true", whereas the value that's output is "false". But the two occurrences of @rate-option are evaluated with different context nodes, so you're looking at two different attributes.
Michael Kay http://www.saxonica.com/
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