[mapguide-users] Filter queries on FeatId field of SHP files giving unexpected results

[cagray]

Hi,

I have an interesting situation when applying filters to a SHP file's FeatId
field (the primary key field).

If I apply a filter of:

FeatId > 20

When you preview/save and view the layer I only get the feature with FeatId
20 showing in the layer instead of the 40 or so features that actually have
a FeatId > 20. However if I do a query on this layer using the same filter
using code such as:

MgFeatureQueryOptions queryOptions = new MgFeatureQueryOptions();
queryOptions.SetFilter("FeatId > 20");
MgFeatureReader featureReader =
featureService.SelectFeatures(layerResourceId, className, queryOptions);

the results of this filter are as expected and I get the 40 or so rows
returned that actually have a FeatId above 20.

It looks like when rendering the FeatId > 20 gets interpreted as FeatId =
20. I tried other operators such as <, <= and >= and they all behaved the
same way.

Has anyone seen this before? Is it the SHP files I am using or a generic
issue for SHP files?

Thanks for any help
Colin
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