Tricky Optimisation, Can it be done? More Expert than Beginner

[simonchristieis]

Hi all,

I have an xml file and am transforming it using xsl.
Currently using msxml parser, will need to transform using Xalan-J (xerces parser)

Within this file I have included another xsl file that I am using as a data island, however, I want to try and access the data island with values from the xml document being transformed.

Erm yeah, that's clear !

Anyway, this code below works, I want to know if I can optimise this by getting rid of the variable.

<!-- grab the name of the variable -->
<xsl:variable name="type" select="local-name(IH:envelope/IH:body/IH:instrumentSnap/*[1])"/>

<!-- then look up the message type from data island -->
<xsl:value-of select="document('GenericData.xslt')/xsl:stylesheet/Generic:messagetype/Generic:MessType[@IHMessType = $type]/@CRSDataType"/>

what I want would look sommat like this :

<xsl:value-of select="document('GenericData.xslt')/xsl:stylesheet/Generic:messagetype/Generic:MessType[@IHMessType = local-name(document(.)/IH:envelope/IH:body/IH:instrumentSnap/*[1])]/@CRSDataType"/>

Any ideas anyone ?

Thanks in advance.

Simon

 

[tsuji]

I would say enclose the local-name() thing in curly bracket?

 

[tsuji]

I meant this with additional quote.

[tt]<xsl:value-of select="document('GenericData.xslt')/xsl:stylesheet/Generic:messagetype/Generic:MessType[@IHMessType = local-name(document(.)/IH:envelope/IH:body/IH:instrumentSnap/*[1])]/@CRSDataType"/>[/tt]

[tt]<xsl:value-of select="document('GenericData.xslt')/xsl:stylesheet/Generic:messagetype/Generic:MessType[@IHMessType = [red]'{[/red]local-name(document(.)/IH:envelope/IH:body/IH:instrumentSnap/*[1])[red]}'[/red]]/@CRSDataType"/>[/tt]

 

[simonchristieis]

Thanks tsuji, but ....

The problem lies with the focus of the expression lying within a imported document, which doesn't let me traverse back up the tree, and out of the document back into the xml file.

I can traverse the tree using :

<xsl:value-of select="document('GenericData.xslt')/xsl:stylesheet/Generic:messagetype/Generic:MessType[@IHMessType = local-name(ancestor::*[1])]/@CRSDataType"/>

but as you can see, I am still in the imported documents tree (GenericData.xslt)

I'm not holding out a lot of hope for this one!

Unless, the XML forum MVP has any more ideas ?

8^)

 

[JontyMC]

You need to use the current() function:

<xsl:value-of select="document('GenericData.xslt')/xsl:stylesheet/Generic:messagetype/Generic:MessType[@IHMessType = local-name(current()/IH:envelope/IH:body/IH:instrumentSnap/*[1])]/@CRSDataType"/>

Jon

"I don't regret this, but I both rue and lament it.

 

[JontyMC]

ps, not sure how much this optimises things

Jon

"I don't regret this, but I both rue and lament it.