Re: Variables/Parameters and Scoping

On 5/26/06, Jeni Tennison <jeni@jenitennison.com > wrote:

>
> Doesn't:
>
>    <p:variable name="validity" context="document"
>                select="/*/@validity" />
>    <p:when test="$validity = 'partial' or $validity = 'none'">
>      ...
>    </p:when>
>
> provide just the same challenges for the implementation, in terms of
> tracking dependencies through XPaths and keeping documents in memory, as:
>
>    <p:variable name="validity" select="$document/*/@validity" />
>    <p:when test="$validity = 'partial' or $validity = 'none'">
>      ...
>    </p:when>


As Richard pointed this out in last telcon, I'm in favor of the first
notation
First, because the second is NOT a valid XPath 1.0 expression
Then, because we don't need to parse the full XPath to make a dependency
graph of the pipeline (for a wysiwig editor, for example)

And last but not least because if we handle different kind of XPath in the
future (streamable, Xpath 2.0, etc.) it will not be necessary to handle all
those kinds of XPath

Cheers

Mohamed
-- 
Innovimax SARL
Consulting, Training & XML Development
9, impasse des Orteaux
75020 Paris
Tel : +33 8 72 475787
Fax : +33 1 4356 1746
http://www.innovimax.fr
RCS Paris 488.018.631
SARL au capital de 10.000 €