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RE: how to match the absence of a particular attribute

2005-05-30 03:32:00
Hi,

my problem is different, I need to match a node that have NOT a
particular attribute.

test="not(@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.

If you're walking through the B elements one at a time, then

<xsl:apply-templates select="following-sibling::B[(_at_)a or @b][1]"/>

I.e. select the first following sibling that has either "a" or "b" attribute. 
Use not() if you want negation of the test result.


Cheers,

Jarno - DJ Darjis: Harder, Faster, Louder! Vol. 4 (Disc Three)

Is it possible to match the absence of an attribute with xsl?

On 5/30/05, omprakash(_dot_)v(_at_)polaris(_dot_)co(_dot_)in 
<omprakash(_dot_)v(_at_)polaris(_dot_)co(_dot_)in> wrote:


Hi,
  Try this:

<xsl:if test="@id">
  <!--   do something if attribute id exists -->
</xsl:if>


Cheers,
prakash




                   <talosso(_at_)gmai
                   l.com>               To:     XSL List 
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                                        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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