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<p class=MsoNormal><span style='color:#1F497D'>+1.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'>Orest.<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> fdo-internals-bounces@lists.osgeo.org
[mailto:fdo-internals-bounces@lists.osgeo.org] <b>On Behalf Of </b>Greg Boone<br>
<b>Sent:</b> Thursday, July 22, 2010 11:22 AM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] MOTION: FDO RFC 50 - Extend FDO API to Select
from Multiple Classes and Select Joins<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hi All,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>If there are no further comments, I motion for a vote to
accept “<span style='color:black'>FDO RFC 50 - Extend FDO API to Select from
Multiple Classes and Select Joins.” (<a
href="http://trac.osgeo.org/fdo/wiki/FDORfc50">http://trac.osgeo.org/fdo/wiki/FDORfc50</a>)<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><br>
+1<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:black'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:black'>Greg<o:p></o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p>
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<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span
style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
fdo-internals-bounces@lists.osgeo.org [mailto:fdo-internals-bounces@lists.osgeo.org]
<b>On Behalf Of </b>Orest Halustchak<br>
<b>Sent:</b> Friday, June 04, 2010 10:05 AM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] New FDO RFC 50 posted - Extend FDO API to
Select from Multiple Classes and Select Joins<o:p></o:p></span></p>
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<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Hi,<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Please have a look at a new FDO RFC 50 that proposes to
extend the FDO api to support the ability to use multiple classes in a select
and in a filter. This would provide the ability the express joins at the fdo
level.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><a href="http://trac.osgeo.org/fdo/wiki/FDORfc50">http://trac.osgeo.org/fdo/wiki/FDORfc50</a><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>It is a common capability that users need, the ability to
join together two or more classes for a result to support analysis, rendering,
or other uses. Until now, with FDO, this was done at a higher level such as the
client-side join capabilities within MapGuide. While that capability is useful,
it does not perform well and is error prone. This enhancement provides us a
clear way to push that capability down to providers that support it such that
they can translate the join into native server expressions. In general, I think
it adds more power and flexibility to the FDO api.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>As usual, this includes capability functions so that
applications can discover if a provider supports this. We don’t expect all
providers to support this, mainly the ones that pass through fdo queries to
sql.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>I hope you like it. <span style='font-family:Wingdings'>J</span><o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks very much to Romy Dascalescu for putting this
together and trying out various alternatives.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Please provide your comments and suggestions.<o:p></o:p></p>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal>Thanks,<o:p></o:p></p>
<p class=MsoNormal>Orest.<o:p></o:p></p>
<p class=MsoNormal><i><o:p> </o:p></i></p>
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