[xsl] comparing attributes if missing at times

["Szabo, Patrick (LNG-VIE)" <patrick.szabo@xxxxxxxxxxxxx>]

Hi,

I'm observing a behaviour that seems weird to me but it might be correct
anyway.
If I compare values of attributes among sibling nodes then missing attributes
give me a little headache.

example:

<elem x="1"/>
<elem x="1"/>
<elem x="2"/>
<elem/>
<elem x="3"/>

If I group these elements into groups like this:

<xsl:for-each-group select="elem" group-starting-with="elem[@x !=
preceding-sibling::elem[1]/@x]">
....

Then the element with @x="2" and the element without the attribute will be in
the same group. So a the lack of the attribut is not interpreted as "having a
different value".

Is that normal ?

regards



. . . . . . . . . . . . . . . . . . . . . . . . . .
Ing. Patrick Szabo
Developer
LexisNexis
A-1030 Wien, Marxergasse 25

mailto:Patrick.Szabo@xxxxxxxxxxxxx
Tel.: +43 1 53452 1514
Fax.: +43 1 534 52 146

. . . . . . . . . . . . . . . . . . . . . . . . . .



. . . . . . . . . . . . . . . . . . . . . . . . . .
Ing. Patrick Szabo
Developer
LexisNexis
A-1030 Wien, Marxergasse 25

mailto:Patrick.Szabo@xxxxxxxxxxxxx
Tel.: +43 1 53452 1514
Fax.: +43 1 534 52 146

. . . . . . . . . . . . . . . . . . . . . . . . . .