Package com.sap.cds.ql.cqn.transformation

Interface CqnGroupByTransformation

All Superinterfaces:

CqnTransformation, JSONizable

@Beta
public interface CqnGroupByTransformation
extends CqnTransformation

Transformation that groups the result set according to specified dimensions and applies given transformations to each group. The result set is the grouped input set after applying the transformations. Two scenarios are common: 1. the list of transformations is empty -> the output set contains the distinct values of the dimensions 2. a single aggregate transformation is specified -> the output set contains the aggregated values per dimension

Nested Class Summary

Nested classes/interfaces inherited from interface com.sap.cds.ql.cqn.transformation.CqnTransformation

CqnTransformation.Kind

Field Summary

Fields inherited from interface com.sap.cds.ql.cqn.transformation.CqnTransformation

IDENTITY

Method Summary

Modifier and Type	Method	Description
List<CqnElementRef>	dimensions()	Returns the dimensions by which the input set is grouped.
default CqnTransformation.Kind	kind()	Returns the kind of this transformation
default List<CqnTransformation>	transformations()	Returns the pipeline of transformations, which is applied to the grouped input set.

Methods inherited from interface com.sap.cds.ql.cqn.transformation.CqnTransformation

rowType, toJson

Method Details

dimensions

List<CqnElementRef> dimensions()

Returns the dimensions by which the input set is grouped.

Returns:

the dimensions by which the input set is grouped.

transformations

default List<CqnTransformation> transformations()

Returns the pipeline of transformations, which is applied to the grouped input set.

Returns:

the pipeline of transformations

kind

default CqnTransformation.Kind kind()

Description copied from interface: CqnTransformation

Returns the kind of this transformation

Specified by:

kind in interface CqnTransformation

Returns:

the kind of this transformation