AggregatorFunction class
SQLite base class for handling aggregate function.
Constructors
-
AggregatorFunction(AggregateHandler creator(), {int argumentsNumber = 0, int optionalArgument = 0, int? dbArgument, ArgumentConverter argConverter = sql.defaultArgumentConverter, FunctionResultConverter? resultConverter, FunctionResultHandler<
PtrContext, dynamic> ? resultHandler}) - AggregatorFunction
Properties
- argConverter → ArgumentConverter
-
The converter which read the Value and convert them into appropriate dart type.
finalinherited
- argumentsNumber → int
-
The total number of argument that dart step function accepted.
finalinherited
- creator → AggregateHandler Function()
-
Return new
sql.AggregateHandlerobjectfinal -
data
↔ Map<
int, AggregateHandler> ? -
Store the data based on context id.
getter/setter pair
- dbArgument → int?
-
A number of argument that given to database engine.
finalinherited
- dbFunctionArgsCount → int
-
Return dbArgument is not null other return argumentsNumber.
no setterinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- next ↔ int
-
next counter id
getter/setter pair
- optionalArgument → int
-
The number of optional positional argument.
finalinherited
- resultConverter → FunctionResultConverter?
-
The converter which convert non-supported data type into once of String, int, double, Uint8List or null.
finalinherited
-
resultHandler
→ FunctionResultHandler<
PtrContext, dynamic> ? -
Custom function to write result back to database engine.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
contextValue(
PtrContext ctx) → TwoResult< int, AggregateHandler> -
Return new or exist value
Dbased on the given SQLite context. -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited