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

Interface CqnAncestorsTransformation

All Superinterfaces:

CqnHierarchySubsetTransformation, CqnTransformation

@Beta
public interface CqnAncestorsTransformation
extends CqnHierarchySubsetTransformation

Transformation that determines ancestors of instances that belong to a recursive hierarchy. The hierarchy is defined by the hierarchy reference and the hierarchy qualifier. The transformation takes an input set consisting of instances that belong to the hierarchy. It firstly determines a subset A of the input set by applying transformations - typically filter or search - to the input set. Then it determines the set of ancestors of A that were already contained in the input set. Its output set is the ancestors set, optionally including A.

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
default CqnTransformation.Kind	kind()	Returns the kind of this transformation

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

distanceFromStart, hierarchyQualifier, hierarchyReference, keepStart, nodeProperty, transformations

Method Details

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