RE: [xsl] Concatenating the attribute values of ancestors

["Michael Kay" <mike@xxxxxxxxxxxx>]

Yes, this is a bug in your code.

Your recursive call of the named template doesn't change the context node,
and therefore the expression "ancestor::*" will select the same nodes each
time; and test="parent::*" will return true each time if it returns true the
first time. 

Michael Kay
http://www.saxonica.com/


> -----Original Message-----
> From: Mukul Gandhi [mailto:mukul_gandhi@xxxxxxxxx] 
> Sent: 08 July 2005 09:54
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: Re: [xsl] Concatenating the attribute values of ancestors
> 
> I am actually getting error Exception in thread "main"
> java.lang.OutOfMemoryError with my stylesheet. It
> seems recursing is not stopping.
> 
> I am using JRE 1.4.2_03. I am using Saxon 8.4. Could
> this be a bug?
> 
> Regards,
> Mukul
> 
> --- Mukul Gandhi <mukul_gandhi@xxxxxxxxx> wrote:
> 
> > Probably some sort of following logic is required..
> > Please be beware, this is not tested.
> > 
> > <?xml version="1.0" encoding="UTF-8"?>
> > <xsl:stylesheet
> > xmlns:xsl="http://www.w3.org/1999/XSL/Transform";    
> > 
> > version="1.0">
> > 
> > <xsl:output method="xml" indent="yes" />
> >   
> > <xsl:template match="node() | @*" priority="5">
> >   <xsl:copy>
> >     <xsl:apply-templates select="node() | @*" />
> >   </xsl:copy>
> > </xsl:template>    
> >   
> > <xsl:template match="*" priority="6">
> >     <xsl:copy>
> >       <xsl:apply-templates select="@*" />
> >       <xsl:attribute name="newSeq">
> >         <xsl:call-template
> > name="concatenate-ancestor-attributes">
> >            <xsl:with-param name="attr_value"
> > select="''" />
> >            <xsl:with-param name="anestors"
> > select="ancestor::*" />
> >         </xsl:call-template>
> >       </xsl:attribute>
> >       <xsl:apply-templates/>
> >     </xsl:copy>
> > </xsl:template>
> >   
> > <xsl:template
> > name="concatenate-ancestor-attributes">
> >     <xsl:param name="attr_value" />
> >     <xsl:param name="ancestors" />
> >     
> >     <xsl:choose>
> >       <xsl:when test="parent::*">
> >         <xsl:call-template
> > name="concatenate-ancestor-attributes">
> > 	  <xsl:with-param name="attr_value"
> > select="concat($attr_value, parent::*/@seq)" />
> > 	  <xsl:with-param name="anestors"
> > select="ancestor::*" />
> >         </xsl:call-template>
> >       </xsl:when>
> >       <xsl:otherwise>
> >         <xsl:value-of select="$attr_value" />
> >       </xsl:otherwise>
> >     </xsl:choose>
> > </xsl:template>
> >   
> > </xsl:stylesheet>
> > 
> > Regards,
> > Mukul
> > 
> > 
> > --- Lakshmi narayana <lchintala@xxxxxxxxxxxx> wrote:
> > 
> > > 
> > > Hi
> > > I want a template which adds the attribute values
> > of
> > > its ancestors and
> > > create an attribute to the current
> > > node. The value to this attribute is the result of
> > > conactination of all the
> > > node values added of its parents.
> > > For example,
> > > <A seq="1">
> > > 	<B seq="2" />
> > > 	<C seq="3">
> > > 		<D seq="4" />
> > > 	</C>
> > > </A>
> > > In the above xml, I want to concatenate all the
> > seq
> > > values of all ancestors
> > > and its seq value also. And add new attribute
> > > to the current node as newSeq with the result
> > > concatenated value.
> > > Note : if seq attribute is not there concatenate
> > > value "0".
> > > Output should look like this.
> > > <A seq="1" newSeq="1">
> > > 	<B seq="2" newSeq="12"/>
> > > 	<C seq="3" newSeq="13">
> > > 		<D seq="4"  newSeq="134"/>
> > > 	</C>
> > > 	<E  newSeq="10">
> > > 		<F seq="5"  newSeq="105"/>
> > > 	</E>
> > > </A>
> > > 
> > > Thanks
> > > Laxmi Narayana
> > > 
> > > 
> > 
> > 
> > 
> > 		
> > ____________________________________________________
> > Sell on Yahoo! Auctions - no fees. Bid on great
> > items.  
> > http://auctions.yahoo.com/
> > 
> > 
> 
> 
> 
> 		
> ____________________________________________________
> Sell on Yahoo! Auctions - no fees. Bid on great items.  
> http://auctions.yahoo.com/