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Adam Van den HovenSubject: No Topic
Author: Adam Van den Hoven
Date: 26 Sep 2001 05:00 PM
Ok,

Since I'm building templates that create HTML for Pocket IE, I've built a mechanism that reads a skin file (basically a CSS-like file in XML) takes the current node and does a very simple cascade, aggregates all the properties into one variable and then selects the first instance of each attribute and then applies those attributes to the content using HTML3.2 constructs (font, b, u, i, etc).

I'm having trouble with the template that selects the attributes to apply to the current node. I use a LOT of msxsl:node-set() functions. I'm getting an error in one line using the Stylus Studio parser (but not MSXML).

The template is:
{xsl:key name="AttribCascade" match="attrib" use="concat(@state, ':', @name)"/}
{xsl:template name="getSkinStyleAttribs"}
{xsl:param name="classname"/}
{xsl:param name="tagname"/}
{xsl:variable name="High" select="$Skin//rule[@class=$classname and @tag=$tagname]"/}
{xsl:variable name="Low" select="$Skin//rule[@class=$classname and not(@tag)] | $Skin//rule[not(@class) and @tag=$tagname]"/}
{xsl:variable name="HighAttribs"}
{xsl:for-each select="$High//attrib"}
{xsl:sort select="position()" order="descending"/}
{xsl:copy}
{xsl:if test="ancestor::rule/@state"}
{xsl:attribute name="state"}
{xsl:value-of select="ancestor::rule/@state"/}
{/xsl:attribute}
{/xsl:if}
{xsl:copy-of select="@* | node() | text()"/}
{/xsl:copy}
{/xsl:for-each}
{/xsl:variable}
{xsl:variable name="nodeHighAttribs" select="msxsl:node-set($HighAttribs)"/}
{xsl:variable name="LowAttribs"}
{xsl:for-each select="$Low//attrib"}
{xsl:sort select="position()" order="descending"/}
{xsl:copy}
{xsl:if test="ancestor::rule/@state"}
{xsl:attribute name="state"}
{xsl:value-of select="ancestor::rule/@state"/}
{/xsl:attribute}
{/xsl:if}
{xsl:copy-of select="@* | node() | text()"/}
{/xsl:copy}
{/xsl:for-each}
{/xsl:variable}
{xsl:variable name="nodeLowAttribs" select="msxsl:node-set($LowAttribs)"/}
{xsl:variable name="AllAttribs"}
{xsl:copy-of select="$nodeHighAttribs"/}
{xsl:copy-of select="$nodeLowAttribs"/}
{/xsl:variable}
{xsl:variable name="nodeAllAttribs" select="msxsl:node-set($AllAttribs)"/}
{xsl:copy-of select="$nodeAllAttribs//attrib[generate-id(.) = generate-id(key('AttribCascade',concat(@state, ':', @name))[1])]"/}
{/xsl:template}

The line:
{xsl:copy-of select="$nodeAllAttribs//attrib[generate-id(.) = generate-id(key('AttribCascade',concat(@state, ':', @name))[1])]"/}

generates an error:
cannot convert to node set. Now I suspect it has something to do with the key or generate-id or something.

Any ideas?
Adam

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Minollo I.Subject: Re: No Topic
Author: Minollo I.
Date: 26 Sep 2001 05:19 PM
Adam,
I tried to reproduce the problem using a similar example, but I failed.
Is it possible for you to send me the XSLT and XML files you are using so
that we can understand what the issue is here?

Thanks,
Minollo

Postnext
Minollo I.Subject: Re: No Topic
Author: Minollo I.
Date: 26 Sep 2001 11:56 PM
Adam,
thanks for the testcase. We've been able to isolate the problem. It happens when you are trying to use a variable assigned to an empty result tree fragment as a node-set. It's not related to the key() or generate-id() functions.

We've been able to fix the problem. The fix will be available in BL63 that we are making available hopefully by tomorrow (Thursday) evening as Beta 4, the last Beta build before 3.1 is officially released.

Thanks again for your help,
Minollo

Posttop
Minollo I.Subject: Re: No Topic
Author: Minollo I.
Date: 28 Sep 2001 05:51 PM
Sorry for the one day delay.
The problem is fixed in BL63, 3.1 Beta 4 available now on:
http://download.exceloncorp.com/downloads/studio/iftw_beta/stylus%20studio.htm

Minollo

 
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