I would do

group-by="string-join(receiver, operation, prev_bus_state, data, 
  for $x in $groupingKeys return saxon:evaluate($x/key), '|'))"

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

> -----Original Message-----
> From: christoph.klocker@xxxxxx [mailto:christoph.klocker@xxxxxx] 
> Sent: 16 July 2007 11:21
> To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Subject: RE:  dynamic grouping assignment
> 
> I have several such result blocks.
>   <result>
>             <receiver>Aktien</receiver>
>             <operation>I</operation>
>             <bus_state>OP</bus_state>
>             <prev_bus_state></prev_bus_state>
>             <pf_cod>600         </pf_cod>
>             <xact_num>6281098</xact_num>
>             <exec_num>46030</exec_num>
>             <xact_dat>27-06-2007</xact_dat>
>             <settle_dat>27-06-2007</settle_dat>
>             <inst_qty>10</inst_qty>
>             <inst_price>8.0</inst_price>
>             <cur_cod>TRY</cur_cod>
>             <settle_cur>TRY</settle_cur>
>             <order_typ></order_typ>
>             <order_typ_ref></order_typ_ref>
>             <prev_xact_num></prev_xact_num>
>             <ordr_block>block</ordr_block>
>    </result>
> 
> I always have to group after following elements receiver, 
> operation, prev_bus_state, what I did by concating 
> concat(receiver, operation, prev_bus_state, data)
> 
> Now I need to assign dynamically additional grouping keys so 
> that my group by statement would be
> 
> concat(receiver, operation, prev_bus_state, data, ordr_block, 
> order_typ)
> 
> I tried now:concat(receiver, operation, data, prev_bus_state, 
> string-join(for $x in $groupingKeys return $x/key, ','))
> 
> where the parameter $groupingKeys is
> 
> <xsl:param name=3D"groupingKeys" >
>          <key>order_typ</key>
>          <key>ordr_block</key>
> </xsl:param >
> 
> the problem is, that the key elements are not evaluated. the 
> grouping key contains the element names not the value of them:
> "AktienIordr_block,order_typ"
> 
> I don't know how to use xx:evaluate() on more than one element.
> 
> hope this makes it more clear.
> Christoph
> 
> 
> mike@xxxxxxxxxxxx@inet schrieb am 16.07.2007 10:27:29:
> 
> > As with dynamic sorting: if you know that the dynamic keys will be
> simple
> > element names, you can use *[name()=$key]. For anything 
> more complex,
> you
> > need xx:evaluate(). If you can't get this to work you'll 
> need to show 
> > us what you did before we can tell you what you did wrong.
> > 
> > Michael Kay
> > http://www.saxonica.com/
> > 
> > > -----Original Message-----
> > > From: christoph.klocker@xxxxxx [mailto:christoph.klocker@xxxxxx]
> > > Sent: 16 July 2007 06:49
> > > To: xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> > > Subject:  dynamic grouping assignment
> > > 
> > > Hi,
> > > How can I dynamically assing a grouping key, where I 
> provide some of 
> > > the grouping keys as parameters.
> > > 
> > > I have the parameters
> > > 
> > >   <xsl:param name="groupingKeys" >
> > >         <key>order_typ</key>
> > >         <key>ordr_block</key>
> > >     </xsl:param >
> > > 
> > > I would like to add to the group-by evaluation.
> > > 
> > >  <xsl:for-each-group select="result" 
> > > group-by="concat(receiver, operation, data, prev_bus_state, 
> > > string-join(for $x in $groupingKeys return $x/key, ','))">
> > > 
> > > I guess I need to use the saxon:evaluate() extension, but 
> I couldn't 
> > > get it right.
> > > 
> > > thanks
> > > 
> > > 
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> 
> 
> 
> This message and any attachment ("the Message") are 
> confidential. If you are not the intended recipient any use 
> is strictly prohibited. If you have received the Message in 
> error, please notify the sender immediately and delete the 
> Message from your system, any use is forbidden. 
> Correspondence via e-mail is primarily for information 
> purposes. KAG/RVV/RIFA/ImmoKAG neither makes nor accepts 
> legally binding statements unless otherwise agreed to the contrary.