org.apache.calcite.adapter.enumerable

Interface AggContext

All Known Subinterfaces:

WinAggContext

All Known Implementing Classes:

EnumerableAggregate.AggContextImpl

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

Modifier and Type	Method and Description
SqlAggFunction	aggregation() Returns the aggregation being implemented.
List<ImmutableBitSet>	groupSets() Returns the grouping sets we are aggregating on.
List<Integer>	keyOrdinals() Returns the ordinals of the input fields that make up the key.
List<? extends RelDataType>	keyRelTypes() Returns the types of the group key as RelDataType.
List<? extends Type>	keyTypes() Returns the types of the group key as Type.
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

keyOrdinals

List<Integer> keyOrdinals()

Returns the ordinals of the input fields that make up the key.

keyRelTypes

List<? extends RelDataType> keyRelTypes()

Returns the types of the group key as RelDataType.

keyTypes

List<? extends Type> keyTypes()

Returns the types of the group key as Type.

groupSets

List<ImmutableBitSet> groupSets()

Returns the grouping sets we are aggregating on.