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Home » Boards » Stylus Studio Developer Network » XSLT Help and Discussion » Counting unique values of an attribute based on an existing attiribute group
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David CorleySubject: Counting unique values of an attribute based on an existing attiribute group
Author: David Corley
Date: 15 Nov 2006 04:40 AM
My xml document format is as follows:
<file name="nms\arne\client\entries\AreaInputEntry.java">
<violation line="36" rule="ImmutableField" ruleset="Design Rules" package="nms.arne.client.entries" class="AreaInputEntry" externalInfoUrl="http://pmd.sourceforge.net/rules/design.html#ImmutableField" priority="5">
Private field 'gridbag' could be made final; it is only initialized in the declaration or constructor.
</violation>
<violation line="37" rule="ImmutableField" ruleset="Design Rules" package="nms.arne.client.entries" class="AreaInputEntry" externalInfoUrl="http://pmd.sourceforge.net/rules/design.html#ImmutableField" priority="5">
Private field 'constraints' could be made final; it is only initialized in the declaration or constructor.
</violation>
<violation line="50" rule="MethodArgumentCouldBeFinal" ruleset="Optimization Rules" package="nms.arne.client.entries" class="AreaInputEntry" method="init" externalInfoUrl="http://pmd.sourceforge.net/rules/optimizations.html#MethodArgumentCouldBeFinal" priority="4">
Parameter 'any' is not assigned and could be declared final
</violation>
<violation line="57" rule="LocalVariableCouldBeFinal" ruleset="Optimization Rules" package="nms.arne.client.entries" class="AreaInputEntry" method="init" externalInfoUrl="http://pmd.sourceforge.net/rules/optimizations.html#LocalVariableCouldBeFinal" priority="4">
Local variable could be declared final
</violation>
<violation line="58" rule="LocalVariableCouldBeFinal" ruleset="Optimization Rules" package="nms.arne.client.entries" class="AreaInputEntry" method="init" externalInfoUrl="http://pmd.sourceforge.net/rules/optimizations.html#LocalVariableCouldBeFinal" priority="4">
Local variable could be declared final
</violation>
<violation line="60" rule="AvoidInstantiatingObjectsInLoops" ruleset="Optimization Rules" package="nms.arne.client.entries" class="AreaInputEntry" method="init" externalInfoUrl="http://pmd.sourceforge.net/rules/optimizations.html#AvoidInstantiatingObjectsInLoops" priority="6">
Avoid instantiating new objects inside loops
</violation>
<violation line="121" rule="MethodArgumentCouldBeFinal" ruleset="Optimization Rules" package="nms.arne.client.entries" class="SummaryLabel" method="replaceTag" externalInfoUrl="http://pmd.sourceforge.net/rules/optimizations.html#MethodArgumentCouldBeFinal" priority="4">
Parameter 'replacement' is not assigned and could be declared final
</violation>
<violation line="121" rule="MethodArgumentCouldBeFinal" ruleset="Optimization Rules" package="nms.arne.client.entries" class="SummaryLabel" method="replaceTag" externalInfoUrl="http://pmd.sourceforge.net/rules/optimizations.html#MethodArgumentCouldBeFinal" priority="4">
Parameter 'tag' is not assigned and could be declared final
</violation>
<violation line="123" rule="LocalVariableCouldBeFinal" ruleset="Optimization Rules" package="nms.arne.client.entries" class="SummaryLabel" method="replaceTag" externalInfoUrl="http://pmd.sourceforge.net/rules/optimizations.html#LocalVariableCouldBeFinal" priority="4">
Local variable could be declared final
</violation>
</file>

I've grouped the violations together through the use of the following:
<xsl:for-each-group select=" //violation" group-by="@package">
Now I want to count the unique instances of each class attribute where the package attribute is equal to the current-grouping-key.

I've tried the following but it doesn't work:

<xsl:value-of select="count(distinct-values(//@class[@package=current-grouping-key()]))"/>

Can anyone help me? I'm using xslt 2.0.
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James DurningSubject: Counting unique values of an attribute based on an existing attiribute group
Author: James Durning
Date: 15 Nov 2006 04:06 PM
Originally Posted: 15 Nov 2006 01:39 PM
Would this work for you?
<xsl:value-of select="count(distinct-values(current-group()/@class))"/>

--EDITED to use current-group()
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David CorleySubject: Counting unique values of an attribute based on an existing attiribute group
Author: David Corley
Date: 16 Nov 2006 09:59 AM
I figured out the same answer later that evening, but thanks for the reply! You were correct!
 
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