Oleg, first off, kudos on the thought you're bringing to bear on what you
say is a new subject.
I have the following data (leaves in parallel branches):
mystruct/myarray1[i]/myvar/var2 and
mystruct/myarray2[i]/myvar/var3
I need to implement the find the first occurence of :
<xsl:if test="position() != last() and
number(var2) = number(var2[position()+1]) and
number(var3) = number(var3[position()+1])">
<value-of select="position()">
</xsl:if>
You're approaching this procedurally, it seems, whereas you'd be better
served using XSL's natural declarative model. Like with SQL, for example.
Thus, rather than trying to pick through and find a specific node or value
in imperative fashion, try to "describe" to the processor what you're
looking for.
For example, with this XML input:
<mystruct>
<myarray>
<myvar>22</myvar>
<myvar>2</myvar>
<myvar>3</myvar>
<myvar>5</myvar>
<myvar>77</myvar>
<myvar>78</myvar>
<myvar>1</myvar>
</myarray>
</mystruct>
This XSL will find the fist <myvar> node whose value is 1 less than it's
immediately succeeding <myvar> sibling:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform";>
<xsl:output indent="yes" method="xml" omit-xml-declaration="yes"/>
<xsl:template match="/">
<node>
<xsl:copy-of select="mystruct/myarray/myvar[. =
following-sibling::myvar[1] - 1][1]"/>
</node>
</xsl:template>
</xsl:stylesheet>
Yields:
<node>
<myvar>2</myvar>
</node>
You should be able to do something similar for your problem.
Regards,
--A
A few questions to XSLT gurus:
1) Does it make sense to do in the for-each loop or it will require a
recursion ?
All I need is to get the position of the 1st occurrence.
How would that recursion look like?
2) Will I be able to get a node from the parallel branch in for-each loop ?
Something like:
<xsl:for-each mystruct/myarray1[i]/myvar>
<xsl:if test=" ...and number(../../myarray2[i]/myvar/var3) =
number((../../myarray2[i]/myvar/var3)[position()+1]) and...">
<value-of select="position()">
</xsl:if>
</xsl:for-each>)
I know it looks awful :-(
3) Is there a way to somehow start the for-each loop
from position other than 1 ?
Like with j>1:
<xsl:for-each mystruct/myarray1[i]/myvar[j]>
....
</xsl:for-each>
I am using XSLT 1.x
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