Child node attribute in XSLT - xslt

Question

Is it possible to access child node attributes in xsl:if
I have to convert that Xml to text file
<Report>
<Total>
<RecordValues>
<Record>
<FieldValue fieldName="index" fieldValue="1" />
<FieldValue fieldName="dtrk_sysid" fieldValue="0"/>
<FieldValue fieldName="version" fieldValue="100" />
<FieldValue fieldName="user" fieldValue="tester" />
<FieldValue fieldName="date_modified" fieldValue="2010-10-18 12:18:12" />
<FieldValue fieldName="object_name" fieldValue="Menu" />
<FieldValue fieldName="permission" fieldValue="Permission X" />
</Record>
<Record>
<FieldValue fieldName="index" fieldValue="2" />
<FieldValue fieldName="dtrk_sysid" fieldValue="55555"/>
<FieldValue fieldName="version" fieldValue="100" />
<FieldValue fieldName="user" fieldValue="user1" />
<FieldValue fieldName="date_modified" fieldValue="2010-12-15 12:18:12" />
<FieldValue fieldName="object_name" fieldValue="Control" />
<FieldValue fieldName="permission" fieldValue="Permission E" />
</Record>
<Record>
<FieldValue fieldName="index" fieldValue="3" />
<FieldValue fieldName="dtrk_sysid" fieldValue="55555"/>
<FieldValue fieldName="version" fieldValue="15" />
<FieldValue fieldName="user" fieldValue="user2" />
<FieldValue fieldName="date_modified" fieldValue="2010-10-02 12:18:12" />
<FieldValue fieldName="object_name" fieldValue="Run" />
<FieldValue fieldName="permission" fieldValue="Permission R" />
</Record>
</RecordValues>
</Total>
I already know how to do that, but the file must have header record which is should appear only once as the first record of the file. It must contains some default values and some values from FieldValue node.
Here is the example of header record:
HDRTT55555EE000KK20101018UU
1 100 101810
tester Menu Permission X
2 100 121510
user1 Control Permission E
3 15 100210
user2 Run Permission R
Here is what I've done so far:
<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="text" indent="yes" encoding="UTF-8" omit-xml- declaration="yes"/>
<xsl:template match="/">
<xsl:apply-templates select="/Report/Total/RecordValues"/>
<xsl:apply-templates select="/Report/Total/RecordValues/Record/FieldValue"/>
</xsl:template>
<xsl:template match="RecordValues">
<xsl:text>HDR</xsl:text>
<xsl:text>TT</xsl:text>
<xsl:variable name="fvsys" select="Record/FieldValue[#fieldName = 'dtrk_sysid']"/>
<xsl:choose>
<xsl:when test="$fvsys/#fieldValue != '0'">
<xsl:value-of select="$fvsys/#fieldValue"/>
</xsl:when>
<xsl:otherwise>
<xsl:text>12343</xsl:text>
</xsl:otherwise>
</xsl:choose>
<xsl:text>EE</xsl:text>
<xsl:text>000</xsl:text>
<xsl:text>KK</xsl:text>
<xsl:if test="Record/FieldValue[#fieldName='date_modified']">
<xsl:call-template name="ppad">
<xsl:with-param name="str" select="concat(substring(translate(Record/FieldValue[#fieldName = 'date_modified']/#fieldValue,'-',''),5,4), substring(Record/FieldValue[#fieldName = 'date_modified']/#fieldValue,3,2))"/>
<xsl:with-param name="len" select="6"/>
</xsl:call-template>
</xsl:if>
<xsl:text>UU</xsl:text>
<xsl:text>
</xsl:text>
</xsl:template>
<xsl:template match="FieldValue">
</xsl:template>
<xsl:template name="ppad">
<xsl:param name="str"/>
<xsl:param name="chr" select="' '"/>
<xsl:param name="len" select="0"/>
<xsl:choose>
<xsl:when test="string-length($str) < $len">
<xsl:call-template name="ppad">
<xsl:with-param name="str" select="concat($str, $chr)"/>
<xsl:with-param name="len" select="$len"/>
<xsl:with-param name="chr" select="$chr"/>
</xsl:call-template>
</xsl:when>
<xsl:otherwise>
<xsl:value-of select="$str"/>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>
Thanks for your help.

Answer 1

The main problem with the following if statement:
<xsl:if test="Record/FieldValue/#fieldName='dtrk_sysid' and Record/FieldValue/#fieldValue!='0'">
<xsl:value-of select="Record/FieldValue/#fieldValue"/>
</xsl:if>
is that the #fieldValue you're trying to compare after the and is supposed to be the #fieldValue of the <FieldValue> whose #fieldName is 'dtrk_sysid', but there is nothing that limits the second comparison to that particular <FieldValue>. The <xsl:if test=...> does not set a context. <xsl:value-of> will then select the first #fieldValue attribute of all Record/FieldValue nodes under the context node, which by luck happens to be the right one, in your sample input XML (but maybe not always?).
To fix that, you can capture the context (the <FieldValue> whose #fieldName is 'dtrk_sysid') in a variable:
<xsl:variable name="fvsys" select="(Record/FieldValue[#fieldName = 'dtrk_sysid'])[1]"/>
Then you can replace your first two if statements with:
<xsl:choose>
<xsl:when test="$fvsys/#fieldValue != '0'">
<xsl:value-of select="$fvsys/#fieldValue"/>
</xsl:when>
<xsl:otherwise>
<xsl:text>12343</xsl:text>
</xsl:otherwise>
</xsl:choose>
(The above has been modified to fit the behavior described in comments.)
You can replace your third if statement with:
<xsl:value-of select="(Record/FieldValue[#fieldName = 'date_modified'])[1]/#fieldValue"/>
This will not output anything if no such FieldValue exists.
If after this you're still not getting the desired output, tell us what output you are getting, and how it differs from the desired output.