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hardik mehtaSubject: Complex condition in Predicate
Author: hardik mehta
Date: 24 Nov 2005 10:13 AM
Hi all,

yesterday my problem was solves with clyde's help..now in the same xslt file, i m stuck in a new prob.

to be more precise i write here the xml file:

<some-nodes>

<node-of-interest>
<sub1>val1</sub1>
<sub2>val2</sub2>
</node-of-interest>

<node-of-interest>
<sub1>val1</sub1>
<sub2>val2</sub2>
</node-of-interest>

<node-of-interest>
<sub1>val1</sub1>
<sub2>val2</sub2>
</node-of-interest>


........
</some-nodes>

now i want to take the nodes in variable

<xsl:variable name="nodes" select="some-nodes/node-of-interest[sub1 < test1 and sub2 < test2]" />

this failed so I did as following....

<xsl:variable name="allNodes" select="some-nodes/node-of-interest[sub1 < test1 and sub2 < test2]" />

and after that...

<xsl:variable name="nodes" select="$allNodes[sub2 > test2]" />


can't i do this ? i feel it is absolutely legal but the parser xalan tells something like this...

Cannot convert #RTREEFRAG to a NodeList!

any suggestion will be helpful...

Hardik.
Postnext
(Deleted User) Subject: Complex condition in Predicate
Author: (Deleted User)
Date: 24 Nov 2005 10:41 PM
Hardik,

Firstly, when using [val1 < val2] in a select= use [val1 &lt; val2]. Your complex select should work properly if you use &lt; with and:
[val1 &lt; val2 and val3 &lt; val4]

Clyde
Postnext
hardik mehtaSubject: Complex condition in Predicate
Author: hardik mehta
Date: 25 Nov 2005 03:07 AM
Hi Clyde,

yes, u are right the complex condition alone wored but in my case i had that condition in an xsl:choose e.g.

<xsl:variable name="nodes" >
<xsl:choose>
<xsl:when test="$variable = 'true'">
<xsl:value-of select="some-nodes/node-of-interest[sub1 = 'test1']
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="some-nodes/node-of-interest[sub1 = 'test1' and sub2 = 'test2']
</xsl:otherwise>
</xsl:choose>


this didnt work and gave the above mentioned error.

i found some strange solution of it passing test2 as a variable and avoiding <xsl:choose> but this is not an elegant solution i think.


is there any other way ?


Hardik
Postnext
(Deleted User) Subject: Complex condition in Predicate
Author: (Deleted User)
Date: 25 Nov 2005 06:31 AM
Hardik,

If you assign a nodeset to a variable with
<xsl:variable name="a" select="...."/>
then the XSLT processor understands that the variable contains a nodeset and allows you to use it as a nodeset in a later XPATH expression.

On the other hand, if you assigne a nodeset to a variable like this:
<xsl:variable name=x">
blah blah
</xsl:variable>
then some processors won't recognize that the variable contains a nodeset and will give various error messages. The fix is processor dependent. See this thread for more info.
http://www.stylusstudio.com/SSDN/default.asp?action=9&read=4442&fid=48
In your case, I would try something which puts everything into 1 predicate:
<xsl:variable name="node" select="[some-nodes/node-of-interest[sub1 = 'test1' and ( $variable = "true" or sub2 = 'test2')]"/>

Clyde

Postnext
hardik mehtaSubject: Complex condition in Predicate
Author: hardik mehta
Date: 28 Nov 2005 04:27 AM
Hi Clyde,

thanks for ur help.

I did not know this and could not even guess !

I am using xalan under linux to parse the xslt and fop to convert resulting xsl:fo file into pdf.

i will search for something similar to msxsl:node-set() in xalan..for future reference.


thanks.
Hardik
Posttop
(Deleted User) Subject: Complex condition in Predicate
Author: (Deleted User)
Date: 28 Nov 2005 10:20 AM
Hardik,

When using xalan, you can try this. The namespace declaration is:
xmlns:xalan="http://xml.apache.org/xalan
And the nodeset function would be
xalan:nodeset($varname)

Clyde

   
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