ISpatialQueryDescriptor Class Reference
Inheritance diagram for ISpatialQueryDescriptor:
Public Member Functions | |
| virtual QueryOrder::Type | order () const =0 |
| virtual bool | hasKnnQuery () const =0 |
| virtual KnnQueryDescriptorHandle | getKnnQuery () const =0 |
| virtual bool | hasRegionQuery () const =0 |
| virtual GeometryHandle | getRegionQuery () const =0 |
| virtual bool | requiresSorting () const =0 |
| virtual SortOrder::Type | getSortingOrder () const =0 |
| Public Member Functions inherited from ObjectBase | |
| virtual void | Delete () |
Static Public Member Functions | |
| static ISpatialQueryDescriptor * | New (KnnQueryDescriptorHandle knnQuery, SortOrder::Type sort=SortOrder::unsorted) |
| create a new spatial query descriptor object | |
| static ISpatialQueryDescriptor * | New (GeometryHandle regionQuery, SortOrder::Type sort=SortOrder::unsorted) |
| static ISpatialQueryDescriptor * | New (KnnQueryDescriptorHandle knnQuery, GeometryHandle regionQuery, SortOrder::Type sort=SortOrder::unsorted) |
| perform knn search and than region query ( | |
| static ISpatialQueryDescriptor * | New (GeometryHandle regionQuery, KnnQueryDescriptorHandle knnQuery, SortOrder::Type sort=SortOrder::unsorted) |
| perform region query and than knn search ( | |
Member Function Documentation
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static |
create a new spatial query descriptor object
In case of knn queries the point are always sorted by the distance in ascending order (2d distances in case of 2d knn query and 3d distances in case of 3d knn query). Hence it is not necessary to speicify a sorting order parameter.
|
static |
perform knn search and than region query (
- See Also
- QueryOrder::knnFirst)
|
static |
perform region query and than knn search (
- See Also
- QueryOrder::regionQueryFirst)
