Package com.sap.cds.ql.cqn

Interface CqnStatement

All Superinterfaces:
JSONizable
All Known Subinterfaces:
CqnDelete, CqnFilterableStatement, CqnInsert, CqnSelect, CqnUpdate, CqnUpsert, CqnXsert, Delete<T>, FilterableStatement<T,S>, Insert, Update<T>, Upsert
All Known Implementing Classes:
Select, StatementBuilder
public interface CqnStatement extends JSONizable

  • Method Details

    • 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