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

Interface CqnTransformationVisitor

@Beta
public interface CqnTransformationVisitor

A CqnToken tree visitor conform to the visitor design pattern. Classes implementing this interface operate on a tree of CqnTransformation

When a visitor is passed as an argument to a transformation's accept method, the transformation's accept method of the children is NOT called. If the deep-first behavior is required it must be implemented manually.

Method Summary

Modifier and Type	Method	Description
default void	visit(CqnAggregateTransformation aggregate)	Called for each traversed CqnAggregateTransformation transformation
default void	visit(CqnAncestorsTransformation ancestors)	Called for each traversed CqnAncestorsTransformation transformation
default void	visit(CqnComputeTransformation compute)	Called for each traversed CqnComputeTransformation transformation
default void	visit(CqnCustomTransformation custom)	Called for each traversed CqnCustomTransformation transformation
default void	visit(CqnDescendantsTransformation descendants)	Called for each traversed CqnDescendantsTransformation transformation
default void	visit(CqnFilterTransformation filter)	Called for each traversed CqnFilterTransformation transformation
default void	visit(CqnGroupByTransformation groupBy)	Called for each traversed CqnGroupByTransformation transformation
default void	visit(CqnHierarchySubsetTransformation hierarchySubset)	Called for each traversed CqnHierarchySubsetTransformation transformation: ancestors and descendants
default void	visit(CqnHierarchyTransformation hierarchy)	Called for each traversed CqnHierarchyTransformation transformation: ancestors, descendants and topLevels
default void	visit(CqnOrderByTransformation orderBy)	Called for each traversed CqnOrderByTransformation transformation
default void	visit(CqnSearchTransformation search)	Called for each traversed CqnSearchTransformation transformation
default void	visit(CqnSkipTransformation skip)	Called for each traversed CqnSkipTransformation transformation
default void	visit(CqnTopLevelsTransformation topLevels)	Called for each traversed CqnTopLevelsTransformation transformation
default void	visit(CqnTopTransformation top)	Called for each traversed CqnTopTransformation transformation

Method Details

visit

default void visit(CqnAggregateTransformation aggregate)

Called for each traversed CqnAggregateTransformation transformation

Parameters:

aggregate - the aggregate transformation

visit

default void visit(CqnAncestorsTransformation ancestors)

Called for each traversed CqnAncestorsTransformation transformation

Parameters:

ancestors - the ancestors transformation

visit

default void visit(CqnComputeTransformation compute)

Called for each traversed CqnComputeTransformation transformation

Parameters:

compute - the compute transformation

visit

default void visit(CqnCustomTransformation custom)

Called for each traversed CqnCustomTransformation transformation

Parameters:

custom - the custom transformation

visit

default void visit(CqnDescendantsTransformation descendants)

Called for each traversed CqnDescendantsTransformation transformation

Parameters:

descendants - the descendants transformation

visit

default void visit(CqnFilterTransformation filter)

Called for each traversed CqnFilterTransformation transformation

Parameters:

filter - the filter transformation

visit

default void visit(CqnGroupByTransformation groupBy)

Called for each traversed CqnGroupByTransformation transformation

Parameters:

groupBy - the group by transformation

visit

default void visit(CqnOrderByTransformation orderBy)

Called for each traversed CqnOrderByTransformation transformation

Parameters:

orderBy - the order by transformation

visit

default void visit(CqnSearchTransformation search)

Called for each traversed CqnSearchTransformation transformation

Parameters:

search - the search transformation

visit

default void visit(CqnTopTransformation top)

Called for each traversed CqnTopTransformation transformation

Parameters:

top - the top transformation

visit

default void visit(CqnSkipTransformation skip)

Called for each traversed CqnSkipTransformation transformation

Parameters:

skip - the skip transformation

visit

default void visit(CqnTopLevelsTransformation topLevels)

Called for each traversed CqnTopLevelsTransformation transformation

Parameters:

topLevels - the top levels (hierarchy generator) transformation

visit

default void visit(CqnHierarchySubsetTransformation hierarchySubset)

Called for each traversed CqnHierarchySubsetTransformation transformation: ancestors and descendants

Parameters:

hierarchySubset - the subset (hierarchy navigation) transformation

visit

default void visit(CqnHierarchyTransformation hierarchy)

Called for each traversed CqnHierarchyTransformation transformation: ancestors, descendants and topLevels

Parameters:

hierarchy - the hierarchy transformation