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<div class=Section1>

<p class=MsoNormal><span style='color:#1F497D'>HI,<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>I agree that it would be much
easier if the properties index matches the order in the returned class definition.
However, since this isn&#8217;t an existing specified requirement, do we know
if there are any providers that do not follow such a convention? It seems
logical that the two would match, so maybe there aren&#8217;t many cases where
it would have to be changed? Do we want to issue a new RFC requiring these two
to match? We would have to (a) check the existing open source providers and fix
the cases where they don&#8217;t follow this rule, and (b) document for non-open
source provider developers that to move to fdo 3.5, they have to update their
providers if necessary to follow this rule.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Thanks,<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>&nbsp;</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>Haris
Kurtagic<br>
<b>Sent:</b> Wednesday, September 16, 2009 3:04 AM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> RE: [fdo-internals] RE: MOTION: FDO RFC 34 - FDO Reader Access
By Index<o:p></o:p></span></p>

</div>

</div>

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

<p class=MsoNormal><span style='color:#1F497D'>H,<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>I am travelling and don't have
internet connection often, so sorry If I missed some parts of discussion.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>I agree with Traian. I think
that providers should be fixed to support such index access which corresponds
to class definition.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>If providers are not able to do
it , &nbsp;then better to have this index lookup inside providers.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>I think it would be important to
encourage writing good FDO client code. Having tables and index lookups and ...
on client for accessing data trough FDO, doesn't look good to me.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Haris<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</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>Traian
Stanev<br>
<b>Sent:</b> Tuesday, September 15, 2009 20:39<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] RE: MOTION: FDO RFC 34 - FDO Reader Access By
Index<o:p></o:p></span></p>

</div>

</div>

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

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>I&#8217;d rather have such
index-&gt;index lookup table inside one or two providers than make every
application programmer have to make such lookup table in client code, because
it seems like instances of such loops would be more common than providers that
cannot implement such table internally.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Traian<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</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> Tuesday, September 15, 2009 2:30 PM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] RE: MOTION: FDO RFC 34 - FDO Reader Access By
Index<o:p></o:p></span></p>

</div>

</div>

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

<p class=MsoNormal><span style='color:#1F497D'>See inline&#8230;<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</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>Traian
Stanev<br>
<b>Sent:</b> Tuesday, September 15, 2009 1:58 PM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] RE: MOTION: FDO RFC 34 - FDO Reader Access By
Index<o:p></o:p></span></p>

</div>

</div>

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

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>There is no technical reason
making this impossible, since this is new API and presumably all existing
providers that want to add support for this will have to comply with the RFC.
If the RFC says that the order has to match the one returned by
GetClassDefinition, then why would you expect future providers to not honor
that?<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><b><span style='color:#1F497D'>[GB] I am sure that they could
do this, but I would not wish to force them to do so for existing providers.
&nbsp;Especially those providers outside the Open Source community.<o:p></o:p></span></b></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>A common use case is that one
gets the class definition from the reader and then loops over its properties using
a for loop inside the reader&#8217;s ReadNext() loop. Such loop would be a
prime candidate for using the indexed Get calls. If the index of the properties
in the class definition does not match the index to use in Get by index, then
this common use case cannot effectively benefit from this RFC, significantly
reducing the value of the Get by index APIs. I guess a workaround for this
would be for the application programmer to create an index-&gt;index lookup
table in such cases before looping, but that sounds worksome to do too often,
which would be an obstacle to adoption of the indexed Get APIs.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>[GB] I agree that in this
situation, a client index-&gt;index lookup will be required. Depending on the
number of different queries being executed this may be problematic. It may be
the case that it would have to be done for all queries.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Traian<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</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> Tuesday, September 15, 2009 10:35 AM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] RE: MOTION: FDO RFC 34 - FDO Reader Access By
Index<o:p></o:p></span></p>

</div>

</div>

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

<p class=MsoNormal><span style='color:#1F497D'>I think we will still require
these methods since we can never guarantee that all existing and future
providers will behave in the expected manner in all select scenarios. <o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Greg<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</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>Traian
Stanev<br>
<b>Sent:</b> Tuesday, September 15, 2009 10:25 AM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] RE: MOTION: FDO RFC 34 - FDO Reader Access By
Index<o:p></o:p></span></p>

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

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>How hard would it be to fix the
providers internally so that the index of the properties in the collection
returned with GetClassDefinition corresponds to the index needed for getting
the property by index? I suspect it is not too hard since it would involve the
same amount of work as implementing this new GetPropertyIndex API, but will not
add new API that one has to call before getting the properties by index.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Traian<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</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>Klain Qin<br>
<b>Sent:</b> Monday, September 14, 2009 11:02 PM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] RE: MOTION: FDO RFC 34 - FDO Reader Access By
Index<o:p></o:p></span></p>

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

<p class=MsoNormal><span style='color:#1F497D'>Hi all,<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>While this RFC is being voted,
I&#8217;ve updated it again in order to use access by index API more
efficiently and correctly. <o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Previously in order to use
access by index functions for FdoIFeatureReader or FdoIDataReader, the API
users will have to know beforehand how index is mapping to property name. And mapping
is different for different provider implementations like SqlLite/SDF and RDBMS.
E.g. with the same FDO schema definition, SqlLite and RDBMS will arrange the
property order returned from GetClassDefinition() differently:<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='color:#1F497D'><span style='mso-list:Ignore'>a.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style='color:#1F497D'>If you don&#8217;t
set selected property names be returned from an FdoISelect command <o:p></o:p></span></p>

<p class=MsoListParagraph><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoListParagraph><span style='color:#1F497D'>SqlLite provider will
arrange the properties in the order: Identity property -&gt; Geometry property
-&gt; the left will be arranged in the order of how they are added into the
class definition, like ID -&gt; geometry -&gt; datetime-&gt; double <o:p></o:p></span></p>

<p class=MsoListParagraph><span style='color:#1F497D'>For RDBMS provider the
order is: identity property -&gt; the left is ordered by the first character of
the property name like ID -&gt; datetime-&gt; double -&gt; geometry<o:p></o:p></span></p>

<p class=MsoListParagraph><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoListParagraph style='text-indent:-.25in;mso-list:l0 level1 lfo2'><![if !supportLists]><span
style='color:#1F497D'><span style='mso-list:Ignore'>b.<span style='font:7.0pt "Times New Roman"'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
</span></span></span><![endif]><span style='color:#1F497D'>If you do set
selected property names to be returned from an FdoISelect command<o:p></o:p></span></p>

<p class=MsoListParagraph><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoListParagraph><span style='color:#1F497D'>SqlLite provider will
respect the order of how they are added to selected properties. <o:p></o:p></span></p>

<p class=MsoListParagraph><span style='color:#1F497D'>SDF provider will respect
the order of corresponding properties defined in the original class
definition(without setting selected properties)<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>So to resolve this
inconvenience, RFC 34 is updated again to add another function for getting the
index of a specific property name. Now both of the property name and index
related functions are moved to FdoIReader as they are needed for both
FdoIFeatureReader and FdoIDataReader. <o:p></o:p></span></p>

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<p class=MsoNormal style='mso-margin-top-alt:12.0pt;margin-right:28.5pt;
margin-bottom:12.0pt;margin-left:28.5pt;background:#F7F7F7'><span lang=EN
style='font-size:10.0pt;font-family:"Courier New";color:black'>FdoString*
GetPropertyName(FdoInt32 index);<o:p></o:p></span></p>

<p class=MsoNormal style='mso-margin-top-alt:12.0pt;margin-right:28.5pt;
margin-bottom:12.0pt;margin-left:28.5pt;background:#F7F7F7'><span lang=EN
style='font-size:10.0pt;font-family:"Courier New";color:black'>FdoInt32
GetPropertyIndex(FdoString* propertyName);<o:p></o:p></span></p>

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<p class=MsoNormal><span lang=EN style='color:#1F497D'>Can you take a look
again at this RFC?<o:p></o:p></span></p>

<p class=MsoNormal><span lang=EN style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><a
href="http://trac.osgeo.org/fdo/wiki/FDORfc34">http://trac.osgeo.org/fdo/wiki/FDORfc34</a></span><span
lang=EN style='color:#1F497D'><o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Thanks,<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Klain<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</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> Monday, September 14, 2009 11:33 PM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] MOTION: FDO RFC 34 - FDO Reader Access By Index<o:p></o:p></span></p>

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

<p class=MsoNormal><span style='color:#1F497D'>Hi all,<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>There were no further comments
on RFC 34:</span> <span style='color:#1F497D'><a
href="http://trac.osgeo.org/fdo/wiki/FDORfc34">http://trac.osgeo.org/fdo/wiki/FDORfc34</a>
&nbsp;</span>-<span style='color:#1F497D'> </span><span style='font-size:10.0pt;
font-family:"Tahoma","sans-serif";color:#1F497D'>FDO Reader Access By Index</span><span
style='color:#1F497D'>.<o:p></o:p></span></p>

<p class=MsoNormal><span style='font-size:10.5pt;color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>I would like to motion a vote to
accept this RFC.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Thanks,<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Greg.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</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> Wednesday, September 09, 2009 12:41 PM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] RE: FDO RFC 34 - FDO Reader Access By Index<o:p></o:p></span></p>

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

<p class=MsoNormal><span style='color:#1F497D'>Hi All,<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>FDO RFC 34 &#8211; Access By
Index: </span><span style='color:#C0504D'><a
href="http://trac.osgeo.org/fdo/wiki/FDORfc34"><span style='color:#C0504D'>http://trac.osgeo.org/fdo/wiki/FDORfc34</span></a></span><span
style='color:#1F497D'> has been updated and is ready for a secondary review. <o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Please refer to the section
labeled: &#8220;<b>Provider Implementation</b>&#8221;<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Please respond with comments by
end of day, Friday September 11.<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'>Greg<o:p></o:p></span></p>

<p class=MsoNormal><span style='color:#1F497D'><o:p>&nbsp;</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, August 06, 2009 9:39 AM<br>
<b>To:</b> FDO Internals Mail List<br>
<b>Subject:</b> [fdo-internals] FDO RFC 34 - FDO Reader Access By Index<o:p></o:p></span></p>

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

<p class=MsoNormal>Hi All,<o:p></o:p></p>

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

<p class=MsoNormal>FDO RFC 34, <a href="http://trac.osgeo.org/fdo/wiki/FDORfc34">http://trac.osgeo.org/fdo/wiki/FDORfc34</a>,
is ready for review. <o:p></o:p></p>

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

<p class=MsoNormal>Please review and respond with comments.<o:p></o:p></p>

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

<p class=MsoNormal>Greg<o:p></o:p></p>

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

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

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

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

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