Package com.sap.cds.ql.cqn

Interface CqnSource

All Superinterfaces:

CqnToken, JSONizable

All Known Subinterfaces:

CqnJoin, CqnSelect, CqnStructuredTypeRef, Source<T>, StructuredType<T>, StructuredTypeRef

All Known Implementing Classes:

Select

public interface CqnSource
extends CqnToken

Method Summary

Modifier and Type	Method	Description
default CqnJoin	asJoin()	Casts this CQN source to a CqnJoin.
default CqnStructuredTypeRef	asRef()	Casts this CQN source to CqnSelect.
default CqnSelect	asSelect()	Casts this CQN source to a CqnSelect.
default boolean	isJoin()	Returns true if this is a CqnJoin.
default boolean	isRef()	Returns true if this is a CqnStructuredTypeRef.
default boolean	isSelect()	Returns true if this is a CqnSelect statement.

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

accept, tokens

Methods inherited from interface com.sap.cds.JSONizable

toJson

Method Details

isRef

default boolean isRef()

Returns true if this is a CqnStructuredTypeRef.

Returns:

true if this is a structured type reference, otherwise false

isSelect

default boolean isSelect()

Returns true if this is a CqnSelect statement.

Returns:

true if this is a select statement, otherwise false

isJoin

default boolean isJoin()

Returns true if this is a CqnJoin.

Returns:

true if this is a join, otherwise false

asRef

default CqnStructuredTypeRef asRef()

Casts this CQN source to CqnSelect.

Returns:

this CQN source as a CqnSelect

Throws:

ClassCastException - if this CQN source is not a select

asSelect

default CqnSelect asSelect()

Casts this CQN source to a CqnSelect.

Returns:

this CQN source as a CqnSelect

Throws:

ClassCastException - if this CQN source is not a select

asJoin

default CqnJoin asJoin()

Casts this CQN source to a CqnJoin.

Returns:

this CQN source as a CqnJoin

Throws:

ClassCastException - if this CQN source is not a join