Package com.sap.cds.ql.cqn

Interface CqnStatement

All Superinterfaces:

JSONizable

All Known Subinterfaces:

CqnDelete, CqnInsert, CqnSelect, CqnUpdate, CqnUpsert, CqnXsert, Delete<T>, Insert, Update<T>, Upsert

All Known Implementing Classes:

Select, StatementBuilder

public interface CqnStatement
extends JSONizable

Method Summary

Modifier and Type	Method	Description
default CqnDelete	asDelete()	Casts this CQN statement to CqnDelete.
default CqnInsert	asInsert()	Casts this CQN statement to CqnInsert.
default CqnSelect	asSelect()	Casts this CQN statement to CqnSelect.
default CqnUpdate	asUpdate()	Casts this CQN statement to CqnUpdate.
default CqnUpsert	asUpsert()	Casts this CQN statement to CqnUpsert.
Map<String,Object>	hints()	Returns the runtime hints of this statement.
default boolean	isDelete()	Returns true if this is a CqnDelete statement.
default boolean	isInsert()	Returns true if this is a CqnInsert statement.
default boolean	isSelect()	Returns true if this is a CqnSelect statement.
default boolean	isUpdate()	Returns true if this is a CqnUpdate statement.
default boolean	isUpsert()	Returns true if this is a CqnUpsert statement.
CqnStructuredTypeRef	ref()	Returns the reference of this statement.

Methods inherited from interface com.sap.cds.JSONizable

toJson

Method Detail

ref

CqnStructuredTypeRef ref()

Returns the reference of this statement. CqnSelect statements do not necessarily have a reference, e.g. a select from subquery. This can be checked via CqnSelect.from().

Returns:

the reference

Throws:

CdsException - if this statement does not have a reference

hints

Map<String,Object> hints()

Returns the runtime hints of this statement.

Returns:

the runtime hints

isSelect

default boolean isSelect()

Returns true if this is a CqnSelect statement.

Returns:

true if this is a select statement, otherwise false

isInsert

default boolean isInsert()

Returns true if this is a CqnInsert statement.

Returns:

true if this is an insert statement, otherwise false

isUpsert

default boolean isUpsert()

Returns true if this is a CqnUpsert statement.

Returns:

true if this is an upsert statement, otherwise false

isUpdate

default boolean isUpdate()

Returns true if this is a CqnUpdate statement.

Returns:

true if this is an update statement, otherwise false

isDelete

default boolean isDelete()

Returns true if this is a CqnDelete statement.

Returns:

true if this is a delete statement, otherwise false

asSelect

default CqnSelect asSelect()

Casts this CQN statement to CqnSelect.

Returns:

this statement as a CqnSelect

Throws:

ClassCastException - if this statement is not a select

asInsert

default CqnInsert asInsert()

Casts this CQN statement to CqnInsert.

Returns:

this statement as a CqnInsert

Throws:

ClassCastException - if this statement is not an insert

asUpsert

default CqnUpsert asUpsert()

Casts this CQN statement to CqnUpsert.

Returns:

this statement as a CqnUpsert

Throws:

ClassCastException - if this statement is not an upsert

asUpdate

default CqnUpdate asUpdate()

Casts this CQN statement to CqnUpdate.

Returns:

this statement as a CqnUpdate

Throws:

ClassCastException - if this statement is not an update

asDelete

default CqnDelete asDelete()

Casts this CQN statement to CqnDelete.

Returns:

this statement as a CqnDelete

Throws:

ClassCastException - if this statement is not a delete