AcMapFeatureService:: SelectAggregate Method
Selects groups of features from a feature source and applies filters to each of the groups according to the criteria set in the MgFeatureAggregateOptions argument.
virtual MgDataReader* SelectAggregate( MgResourceIdentifier* resource, string className, MgFeatureAggregateOptions* option );
Parameters |
Description |
resource |
A resource identifier for the feature source. |
className |
The name of the feature class on which the select operation is performed. |
option |
An MgFeatureAggregateOptions instance containing all the criteria and filters required for this select operation. |
Returns
Returns an MgDataReader containing the group values.
Remarks
If you want to apply the criteria to all features without grouping them, use the SelectFeatures Method.
MgXX classes belong to the OsGeo.MapGuide namespace and are descibed in the Geospatial Platform Reference.
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