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.