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I am not sure.<br>
For Oracle it seems to find the Primary Key, and use that.<br>
The same goes for MySQL and Access.<br>
I don't know about ArcSDE.<br>
<pre class="moz-signature" cols="72">Regards, Kenneth Skovhede, GEOGRAF A/S
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Crispin @ 1Spatial skrev:
<blockquote cite="mid:17122431.post@talk.nabble.com" type="cite">
<pre wrap="">Thanks Kenneth,
That helps if we have the definition of an "identity column". ie how does
FDO determine this? I assume (hope) it is not just having a FDO
"IsAutogenerated()" value as obviously a database could have a unique column
that is key but not from a sequence.
SHP and SDF generically get a "FeatId" autogenerated through the provider
but this is not the case for foreign database schemas.
Kenneth, GEOGRAF A/S wrote:
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<pre wrap="">To be able to select items the layer must be selectable (set in the
MapDefinition).
Secondly, the FeatureSource must have at least one identity column.
If not, all features on the layer are selected.
Regards, Kenneth Skovhede, GEOGRAF A/S
Crispin @ 1Spatial skrev:
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<pre wrap="">Hi,
Can someone explain how the magic of MapGuide selection works...
Of particular interest to me is a particular ArcSDE dataset that appears
fine in MapGuide but (despite correct settings in Studio) has a class of
points which when mapped as a layer do not 'select' in the map.
Using a seperate direct FDO connection I can see the class has no
columns/proprttydefinitions that are "IsAutogenerated()" - is this a
requirement for a layer to be selectable or is there another criteria?
Tooltips appear OK.
Crispin
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