Re: [xsl] Keys with different parents, but same name

[Wendell Piez <wapiez@xxxxxxxxxxxxxxxx>]

Hi Ganesh,

At 01:27 PM 10/27/2003, you wrote:
> Thanks for pointing me in right direction.  This
> indeed worked.  But did not solved the problem :-(.
> The reason for using different keys is there could be
> different types of groups and styling/rendering would
> change accordingly.

I'm not sure why that has to follow.

Your earlier mail posed the problem of retrieving the correct label for a 
node based on its field and fieldGroup, so that's what I looked at.

Keys are a useful mechanism for retrieving nodes based on pre-determined 
criteria (such as the values of associated nodes); how they would apply to 
control styling or rendering is rather an open question, in this case. 
Nevertheless I see no reason why the same lookup mechanism couldn't be used 
to handle, say, CSS styling attribute values. (Whether that would work in 
your case is a different question.)

>   For brevity, i had mentioned only
> field and fieldGroup.  May be to resolve this I think
> will have to look into design stuff.

Most likely. :->

> And another doubt is regarding the way of changing the
> context node to fieldHeaders document, if we use
> <xsl:for-each ...> wont this reduce the performance?
> I might be wrong here.
> <xsl:variable name="keyvalue"
> select="concat(@id,'-')"/>
> <xsl:for-each select="$fieldHeaders">
>    <xsl:value-of select="key('label-by-field',
> $keyvalue)"/>
> </xsl:for-each>

Since this document has already been, or must be, processed to retrieve 
information from it, the changing of the context node by itself does not 
add significant overhead. And because of the way keys work, your context 
node has to be in the document where you apply the key: hence the for-each.

Cheers,
Wendell


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Wendell Piez                            mailto:wapiez@xxxxxxxxxxxxxxxx
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