org.apache.calcite.sql.type

Interface ImplicitCastOperandTypeChecker

All Known Implementing Classes:

FamilyOperandTypeChecker, OperandMetadataImpl

public interface ImplicitCastOperandTypeChecker

An operand type checker that supports implicit type cast, see TypeCoercion.builtinFunctionCoercion(SqlCallBinding, List, List) for details.

Method Summary

Modifier and Type	Method and Description
boolean	checkOperandTypesWithoutTypeCoercion(SqlCallBinding callBinding, boolean throwOnFailure) Checks the types of an operator's all operands, but without type coercion.
SqlTypeFamily	getOperandSqlTypeFamily(int iFormalOperand) Get the operand SqlTypeFamily of formal index iFormalOperand.

Method Detail

checkOperandTypesWithoutTypeCoercion

boolean checkOperandTypesWithoutTypeCoercion(SqlCallBinding callBinding,
                                             boolean throwOnFailure)

Checks the types of an operator's all operands, but without type coercion. This is mainly used as a pre-check when this checker is included as one of the rules in CompositeOperandTypeChecker and the composite predicate is `OR`.

Parameters:

callBinding - description of the call to be checked

throwOnFailure - whether to throw an exception if check fails (otherwise returns false in that case)

Returns:

whether check succeeded

getOperandSqlTypeFamily

SqlTypeFamily getOperandSqlTypeFamily(int iFormalOperand)

Get the operand SqlTypeFamily of formal index iFormalOperand. This is mainly used to get the operand SqlTypeFamily when this checker is included as one of the rules in CompositeOperandTypeChecker and the composite predicate is `SEQUENCE`.

Parameters:

iFormalOperand - the formal operand index.

Returns:

SqlTypeFamily of the operand.