Hello.

I'll first show my XML code and will then place my question.

<RCDATALINE>
<TRC>90</TRC>
<OVERRIDE>Y</OVERRIDE>
</RCDATALINE>
<RCDATALINE>
<TRC>90</TRC>
<OVERRIDE>N</OVERRIDE>
</RCDATALINE>
<RCDATALINE>
<TRC>90</TRC>
<OVERRIDE>N</OVERRIDE>
</RCDATALINE>

I need to print the <TRC> value but only if it hasn't been printed before.
Also, if the OVERRIDE> value is Y, do not print <TRC>.
So, with the above XML, only the second <TRC> would print.

Within a for-each loop, I use preceding-sibling. My problem is that when I find a match for <TRC> in a previous sibling, that occurrence of the <OVERRIDE> needs to be N.

Here's the code that I currently have that needs to have to position() logic added to it.

<xsl:for-each select "RCDATALINE">
<xsl:when test="TRC[.!=''">
<xsl:if test="not (TRC[.=parent::*/preceding-sibling::*/TRC])
and OVERRIDE(position())[.!='Y']"> !!!!!HELP NEEDED HERE
<xsl:value-of select="TRC"/>
</xsl:if>
</xsl:when>
</xsl:for-each>

Any suggestions will be greatly appreciated!

Thanks,
Rita

>I need to print the <TRC> value but only if it hasn't been printed before.

that is, if there is no preceding-sibling with the same TRC value and with OVERRIDE=N; or in XPath:

test="not(preceding-sibling::*[TRC = current()/TRC and OVERRIDE='N'])"

__________________
Michael Kay
http://www.saxonica.com/
Author, XSLT 2.0 and XPath 2.0 Programmer\'s Reference

Thanks Michael for your quick response.
I tried the code per your example and this time I am getting the <TRC> printing out (before it was not) but it's coming out twice.

I'll play around with it to see if I can get it to work.

-- Rita

I tried several combinations and the following one worked for me:
<xsl:if test="not(TRC[.=parent::*/preceding-sibling::*/TRC] and OVERRIDE='')">.

I now have to create various scenarios and hopefully they will work as required

My previous example of code worked for the sample XML code that I had in my initial question. However, for the following example, I get 90 twice when it should only display once.
The difference between this code and the original example is in the second <RCDATALINE>, <OVERRIDE> is Y whereas the original one is N.
NOTE: <TRC> must only print if <OVERRIDE> = N.

<RCDATALINE>
<TRC>90</TRC> -------------------- Should not print as <OVERRIDE> is Y
<OVERRIDE>Y</OVERRIDE>
</RCDATALINE>
<RCDATALINE>
<TRC>90</TRC> -------------------- Should not print as <OVERRIDE> is Y
<OVERRIDE>Y</OVERRIDE>
</RCDATALINE>
<RCDATALINE>
<TRC>90</TRC> -------------------- Should print as <OVERRIDE> is N and there is no previous 90 printed
<OVERRIDE>N</OVERRIDE>
</RCDATALINE>
<RCDATALINE>
<TRC>90</TRC> -------------------- Should not print as 90 from previous <TRC> already printed
<OVERRIDE>N</OVERRIDE>
</RCDATALINE>

So, the following line of code does not give me the required results.
<xsl:if test="not(TRC[.=parent::*/preceding-sibling::*/TRC] and OVERRIDE='')">.

I'm wondering if I should go the way of variables?!

Thanks,
Rita

Well, after further playing around and using Michael's original suggestion I have some of my current test variations all working - except for the example above!!. Here's what's currently working for most of my examples (I added an OVERRIDE test to the initial test):

<xsl:when test="TRC[.!=''] and OVERRIDE[.!='Y']">
<xsl:if test="not(preceding-sibling::*[TRC = current()/TRC and OVERRIDE=''])">
<xsl:value-of select="TRC"/>

I can't see why you are testing OVERRIDE="" (empty string) when in all your examples OVERRIDE is either Y or N.

__________________
Michael Kay
http://www.saxonica.com/
Author, XSLT 2.0 and XPath 2.0 Programmer\'s Reference

Oops - sorry.
It should be OVERRIDE='N'.

<xsl:when test="TRC[.!=''] and OVERRIDE[.!='Y']">
<xsl:if test="not(preceding-sibling::*[TRC = current()/TRC and OVERRIDE='N'])">
<xsl:value-of select="TRC"/>