FireDAC.Phys.SQLite.TFDSQLiteRTree.OnCalculate
Delphi
property OnCalculate: TSQLiteRTreeCalculateEvent read FOnCalculate write SetOnCalculate;
C++
__property Firedac::Phys::Sqlitewrapper::TSQLiteRTreeCalculateEvent OnCalculate = {read=FOnCalculate, write=SetOnCalculate};
Properties
| Type | Visibility | Source | Unit | Parent |
|---|---|---|---|---|
| event | published | FireDAC.Phys.SQLite.pas FireDAC.Phys.SQLite.hpp |
FireDAC.Phys.SQLite | TFDSQLiteRTree |
Description
The RTree match event.
Use the OnCalculate event handler to match the coordinates to the RTree MATCH operator.
The event handler receives an array of parameters (AParams) and records coordinates in AColumns parameter. The event handler returns a result through the AResult parameter.