Re: [xsl] how to match the absence of a particular attribute

[meesala dinesh <meesala74@xxxxxxxxx>]

 For example:
> 
> <A>
>    <B a="a">hello2</B>
>    <B a="a" b="b">hello3</B>
>    <B>hello1</B>   
>    <B b="b">hello4</B>
> </A>

1)abscence of "a" attribute 
----------------------------       
      In this case you need to choose the indirect
approach

<xsl:template match="A">
  <xsl:for-each select="B">
   <xsl:choose>
    <xsl:when test="@a != ''"/>
    <xsl:otherwise>			
	<xsl:copy-of select="."/>
    </xsl:if>
   </xsl:choose>				
  </xsl:for-each>
</xsl:template>

result: 
<B>hello1</B>
<B b="b">hello4</B>

2)"a" attribute is present but value is empty
---------------------------------------------
example:
<A>
>    <B a="a">hello2</B>
>    <B a="a" b="b">hello3</B>
>    <B a="">hello1</B>   
>    <B b="b">hello4</B>
> </A>
    In the second case you can go for the direct
approach.

<xsl:template match="A">
   <xsl:for-each select="B">		
     <xsl:if test="@a ='' ">
	<xsl:copy-of select="."/>
     </xsl:if>
   </xsl:for-each>
</xsl:template>

result:
<B a="">hello1</B>


cheers,
Dinesh M.S

-------------------------------------------------------
--- talosso@xxxxxxxxx wrote:

> Hi,
> 
> my problem is different, I need to match a node that
> have NOT a
> particular attribute.
> Imagine a sequance of node of the same type which
> can have attributes or not.
> I need to perform a first match and if an particular
> attribute is
> absent I will have to perform a second match,
> otherwise the first
> match is enough.
> 
> For example:
> 
> <A>
>    <B a="a">hello2</B>
>    <B a="a" b="b">hello3</B>
>    <B>hello1</B>   
>    <B b="b">hello4</B>
> </A>
> 
> I match the first two "B" nodes as is (the XSLT
> rewrite them without
> translating)
> for the third "B" node, since it lacks the "a"
> attribute, the XSLT
> will perform a second match looking for the next "B"
> node.
> 
> Is it possible to match the absence of an attribute
> with xsl?
> 
> On 5/30/05, omprakash.v@xxxxxxxxxxxxx
> <omprakash.v@xxxxxxxxxxxxx> wrote:
> > 
> > 
> > Hi,
> >   Try this:
> > 
> > <xsl:if test="@id">
> >   <!--   do something if attribute id exists -->
> > </xsl:if>
> > 
> > 
> > Cheers,
> > prakash
> > 
> > 
> > 
> > 
> >                    <talosso@gmai
> >                    l.com>               To:    
> XSL List <xsl-list@xxxxxxxxxxxxxxxxxxxxxx>
> >                                         cc:    
> (bcc: omprakash.v/Polaris)
> >                    05/30/2005           Subject:  
>   [xsl] how to match the absence of a particular
> attribute
> >                    02:28 PM
> >                    Please
> >                    respond to
> >                    xsl-list
> > 
> > 
> > 
> > 
> > 
> > 
> > Hi guys,
> > 
> > how can I test the presence of a particular
> attribute of a node in an
> > "if" or "choose" tag?
> > I need to drive the behavior of the translation in
> two different ways,
> > if an attribute exists or not. I suppose the key
> point is the
> > capability to match the absence of an attribute,
> but I have found no
> > way to do this.
> > 
> > Thank you very much for any help.
> > 
> > Livio
> > 
> > 
> > 
> > 
> > 
> > 
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