[mapguide-users] Re: Sorting within query results

[Jackie Ng]

This gets a bit tricky because you now have to query the capabilities XML of
the underlying feature source and you have to look in the capabilities XML
for a particular element (I believe it's
<SupportsSelectOrdering>true</SupportsSelectOrdering>)

If you find this element, it means the FDO provider for that feature source
says ordering is supported, then it is safe to call SetOrderingFilter() in
the MgFeatureQueryOptions.

Also ideally from a safety standpoint, your sort ordering field in your UI
should be enabled/disabled based on this capability check, to prevent
illegal user actions like specifying sort ordering on a Feature Source that
does not support ordering.

- Jackie

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