org.apache.calcite.adapter.enumerable

Interface AggContext

All Known Subinterfaces:

WinAggContext

public interface AggContext

Information on the aggregate calculation context. AggAddContext provides basic static information on types of arguments and the return value of the aggregate being implemented.

Method Summary

Methods

Modifier and Type	Method and Description
SqlAggFunction	aggregation() Returns the aggregation being implemented.
List<? extends RelDataType>	parameterRelTypes() Returns the parameter types of the aggregate as RelDataType.
List<? extends Type>	parameterTypes() Returns the parameter types of the aggregate as Type.
RelDataType	returnRelType() Returns the return type of the aggregate as RelDataType.
Type	returnType() Returns the return type of the aggregate as Type.

Method Detail

aggregation

SqlAggFunction aggregation()

Returns the aggregation being implemented.

Returns:

aggregation being implemented.

returnRelType

RelDataType returnRelType()

Returns the return type of the aggregate as RelDataType. This can be helpful to test RelDataType.isNullable().

Returns:

return type of the aggregate

returnType

Type returnType()

Returns the return type of the aggregate as Type.

Returns:

return type of the aggregate as Type

parameterRelTypes

List<? extends RelDataType> parameterRelTypes()

Returns the parameter types of the aggregate as RelDataType. This can be helpful to test RelDataType.isNullable().

Returns:

Parameter types of the aggregate

parameterTypes

List<? extends Type> parameterTypes()

Returns the parameter types of the aggregate as Type.

Returns:

Parameter types of the aggregate