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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi Haris,</span></font></p>
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10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>SHP Provider implements batch insert, but
I don’t think there is much optimization there currently. The current
implementation basically allows batch insert but I don’t think it doesn’t
provide any significant advantage performance-wise over regular insert. It could
very likely be optimized but not sure how much gain you could get out of it.</span></font></p>
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10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Pierre</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><b><font size=2 face=Tahoma><span
style='font-size:10.0pt;font-family:Tahoma;font-weight:bold'>From:</span></font></b><font
size=2 face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Haris
Kurtagic [mailto:haris@sl-king.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> October 28, 2006 8:06 AM<br>
<b><span style='font-weight:bold'>To:</span></b> dev@fdo.osgeo.org<br>
<b><span style='font-weight:bold'>Subject:</span></b> [fdo-dev] FdoIInsert
Batch Insert</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Hi,</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I am trying to figure out how Batch
Insert should work. From reading documentation and looking in
implementation in providers, it is very unclear how it should be used.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Looking at shp,sdf and my sql, I see
only shp provider is implementing it.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Documentation say batch parameters
is collection of parameter values for each row.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I see from shp file that it is
matching batch parameter value to property values collection (
GetPropertValues ) using parameter name.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I see from shp implementation that
property values are supposed to be of type FdoParameterValue ( I think that
needs to be added to documentation).</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>SHP provider is implementing it
in such way that it is matching this parameters to properties for every row,
and then converting to properties value for each row. Altogether is very
inefficient.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>it also means that for every row we
need to send parameter name + value.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I think that batch insert should be
implemented in such way that batch parameters values are send as collection of
values and parameter names are sent just as one row of parameter names.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>In batch inserts, number of
parameters or their order won't changed. This would be minimum optimization
could go further.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Another thing I saw in shp
implementation is that it is accepting just FdoParameter as type for property
value (throw exception for other),</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>which would mean that it won't
accept constant values in batch insert ( I am ok with that, but also should be
documented ). </span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>If this is true for general way of
FDO batch insert implementation than batch inserts can be even more optimized.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Try to summarize:</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>I think we need to define what are
rules for batch inserts and according to that optimize batch inserts.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Batch inserts could become very
important if FDO gets wider acceptance.</span></font></p>
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<p class=MsoNormal style='margin-left:36.0pt'><font size=2 face=Arial><span
style='font-size:10.0pt;font-family:Arial'>Haris</span></font></p>
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