Package com.sap.cds.ql.cqn

Interface CqnElementRef

All Superinterfaces:

CqnReference, CqnSelectListItem, CqnSelectListValue, CqnToken, CqnValue, JSONizable, Selectable

All Known Subinterfaces:

ElementRef<T>

public interface CqnElementRef
extends CqnReference, CqnValue, CqnSelectListValue

Nested Class Summary

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

CqnReference.Segment

Field Summary

Fields

Modifier and Type	Field	Description
static String	$KEY

Method Summary

Modifier and Type	Method	Description
default void	accept(CqnVisitor visitor)	Dispatches the handling of this CqnElementRef to a given visitor.
default CqnElementRef	asRef()	Casts this value to CqnElementRef.
default CqnSelectListValue	asValue()
default boolean	isRef()	Returns true if this is a CqnElementRef.
default boolean	isValue()
default Stream<CqnElementRef>	ofRef()
default CqnValue	value()

Methods inherited from interface com.sap.cds.ql.cqn.CqnReference

alias, firstSegment, lastSegment, rootSegment, segments, targetSegment

Methods inherited from interface com.sap.cds.ql.cqn.CqnSelectListItem

asExpand, asSelectList, isExpand, isSelectList, isStar, token, unfold

Methods inherited from interface com.sap.cds.ql.cqn.CqnSelectListValue

alias, displayName, ofValue

Methods inherited from interface com.sap.cds.ql.cqn.CqnToken

tokens

Methods inherited from interface com.sap.cds.ql.cqn.CqnValue

as, asExpression, asFunction, asList, asLiteral, asNullValue, asParameter, asPlain, isExpression, isFunction, isList, isLiteral, isNullValue, isParameter, isPlain, type

Methods inherited from interface com.sap.cds.JSONizable

toJson

Field Detail

$KEY

static final String $KEY

See Also:

Constant Field Values

Method Detail

isRef

default boolean isRef()

Description copied from interface: CqnValue

Returns true if this is a CqnElementRef.

Specified by:

isRef in interface CqnSelectListItem

Specified by:

isRef in interface CqnSelectListValue

Specified by:

isRef in interface CqnValue

Returns:

true if this is an element ref, otherwise false

asRef

default CqnElementRef asRef()

Description copied from interface: CqnValue

Casts this value to CqnElementRef.

Specified by:

asRef in interface CqnSelectListItem

Specified by:

asRef in interface CqnSelectListValue

Specified by:

asRef in interface CqnValue

Returns:

this value as an element ref

ofRef

default Stream<CqnElementRef> ofRef()

Specified by:

ofRef in interface CqnSelectListItem

Specified by:

ofRef in interface CqnSelectListValue

Specified by:

ofRef in interface CqnValue

isValue

default boolean isValue()

Specified by:

isValue in interface CqnSelectListItem

Specified by:

isValue in interface CqnSelectListValue

value

default CqnValue value()

Specified by:

value in interface CqnSelectListValue

accept

default void accept(CqnVisitor visitor)

Dispatches the handling of this CqnElementRef to a given visitor. Neither the segments of this reference nor the segments' filters are traversed.

Specified by:

accept in interface CqnSelectListValue

Specified by:

accept in interface CqnToken

Parameters:

visitor - the CqnVisitor

asValue

default CqnSelectListValue asValue()

Specified by:

asValue in interface CqnSelectListItem

Specified by:

asValue in interface CqnSelectListValue