RE: [xsl] XPath 2.0 Best Practice: wrap the first node of every path exp

Is there anyone from Altova on this list?

To my mind, if the Altova XSLT/XPath processor doesn't raise an error
or a warning on: 

    schema-element(Book)/Foo

then it is a pretty serious drawback of the Altova processor.  

Certainly I will not recommend to my clients the use of any XSLT/XPath
processor which does not raise an error or warning on
schema-element(Book)/Foo

/Roger


-----Original Message-----
From: Florent Georges [mailto:lists(_at_)fgeorges(_dot_)org] 
Sent: Wednesday, March 26, 2008 5:35 AM
To: xsl-list(_at_)lists(_dot_)mulberrytech(_dot_)com
Subject: Re: [xsl] XPath 2.0 Best Practice: wrap the first node of
every path expression within schema-element?

Martin Honnen wrote:

  Hi

>    <xsl:template match="/schema-element(Book)">
>      <xsl:text>matching on schema type: </xsl:text>
>      <xsl:value-of select="(Author/LastName, Author/Foo,
> Author/LastNam, 
> Author/Firstname)"/>
>    </xsl:template>
> [...]
> so it applies the template matching on schema-element(Book)
> but it does not give any warnings on Author/Foo, Author/LastNam,
> Author/Firstname.
  The mispellings are not on direct childs of the element you used
schema-element on.  Maybe they only implemented simpler checks: only on
direct childs, and maybe only when schema-element appears within the
XPath expression itself.

  If I remember correctly, Altova doesn't respond to questions if you
didn't get a support contract (they won't even listen to your
comments.)  So we can only guess here, and say that if the following
XPath expression doesn't emit any warning, then this processor most
probably doesn't implement any static type analysis:

    <xsl:template match="/">
       <xsl:value-of select="schema-element(Book)/Foo"/>
    </xsl:template>

  Regards,

--drkm























 
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