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<p class=MsoNormal>Mondrian Community,<o:p></o:p></p>

<p class=MsoNormal>&nbsp; Currently, Grouping Sets are not being used in
Mondrian when native evaluation is enabled.&nbsp; Since native evaluation
limits the members during tuple evaluation, the batches that are created for
cell evaluation have a constraint to limit to only those tuples that were non
empty.&nbsp; The constraints cause the Grouping Set code to be unable to rollup
those batches into a single query.&nbsp; However,&nbsp; if the original query
actually had a level.members rather than a specific set of members, it would be
valid to allow those batches to be grouped into a Grouping Set.&nbsp; I&#8217;ve
come up with a way to get around this limitation.&nbsp; Mondrian could store in
the evaluation cache those levels that were used as level.members during native
evalution.&nbsp; Then when deciding if batches can be rolled up, that list of
levels can be taken into account.&nbsp; There is one kind of ugly part of this
solution.&nbsp; The eval cache is cleared between tuple and cell
evaluation.&nbsp; So, the levels cache would be lost.&nbsp; There would need to
be a special case for the new key so that it does not get cleared.&nbsp; Does
anyone have any thoughts on this solution?&nbsp; Any other ideas how Mondrian
can share state from tuple evaluation into cell evaluation?&nbsp; Thanks.<o:p></o:p></p>

<p class=MsoNormal><o:p>&nbsp;</o:p></p>

<p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#666666'>&middot; &middot; &middot; &middot; &middot; &middot; &middot;
&middot; &middot; &middot; &middot; &middot; &middot; &middot; &middot;
&middot; &middot; &middot; &middot; &middot; &middot; &middot; &middot;
&middot; &middot; &middot; &middot; &middot; &middot; &middot; &middot;
&middot; &middot; &middot; &middot; &middot; &middot; &middot; &middot;</span></b><span
style='font-size:12.0pt;font-family:"Times New Roman","serif"'><br>
</span><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#666666'>Kurtis Walker</span></b><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'><br>
</span><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#666666'>Programmer Analyst Sr</span><span style='font-size:12.0pt;
font-family:"Times New Roman","serif"'><o:p></o:p></span></p>

<p class=MsoNormal style='mso-margin-top-alt:9.0pt;margin-right:0in;margin-bottom:
9.0pt;margin-left:0in;line-height:12.75pt'><b><span style='font-size:9.0pt;
font-family:"Arial","sans-serif";color:#F57F20'>Thomson Reuters<o:p></o:p></span></b></p>

<p class=MsoNormal><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#666666'>734-913-3034</span></b><b><span style='font-size:9.0pt;
font-family:"Arial","sans-serif";color:#F57F20'><br>
</span></b><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#666666'>kurtis.walker@thomsonreuters.com</span></b><b><span
style='font-size:9.0pt;font-family:"Arial","sans-serif";color:#F57F20'><br>
</span></b><b><span style='font-size:9.0pt;font-family:"Arial","sans-serif";
color:#666666'><a href="http://thomsonreuters.com"><span style='color:#666666'>thomsonreuters.com</span></a></span></b><o:p></o:p></p>

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