org.apache.calcite.sql.type

Interface SqlOperandMetadata

All Superinterfaces:

SqlOperandTypeChecker

All Known Implementing Classes:

OperandMetadataImpl, SqlWindowTableFunction.AbstractOperandMetadata

public interface SqlOperandMetadata
extends SqlOperandTypeChecker

Extension to SqlOperandTypeChecker that also provides names and types of particular operands.

It is intended for user-defined functions (UDFs), and therefore the number of parameters is fixed.

See Also:

OperandTypes

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.calcite.sql.type.SqlOperandTypeChecker

SqlOperandTypeChecker.Consistency

Method Summary

Modifier and Type	Method and Description
List<String>	paramNames() Returns the names of the parameters.
List<RelDataType>	paramTypes(RelDataTypeFactory typeFactory) Returns the types of the parameters.

Methods inherited from interface org.apache.calcite.sql.type.SqlOperandTypeChecker

checkOperandTypes, getAllowedSignatures, getConsistency, getOperandCountRange, isFixedParameters, isOptional, typeInference

Method Detail

paramTypes

List<RelDataType> paramTypes(RelDataTypeFactory typeFactory)

Returns the types of the parameters.

paramNames

List<String> paramNames()

Returns the names of the parameters.