org.apache.calcite.sql.type

Class OrdinalReturnTypeInference

java.lang.Object

org.apache.calcite.sql.type.OrdinalReturnTypeInference

All Implemented Interfaces:

SqlReturnTypeInference

public class OrdinalReturnTypeInference
extends Object
implements SqlReturnTypeInference

Returns the type of the operand at a particular 0-based ordinal position.

Constructor Summary

Constructors

Constructor and Description
OrdinalReturnTypeInference(int ordinal)

Method Summary

Methods

Modifier and Type	Method and Description
RelDataType	inferReturnType(SqlOperatorBinding opBinding) Infers the return type of a call to an SqlOperator.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OrdinalReturnTypeInference

public OrdinalReturnTypeInference(int ordinal)

Method Detail

inferReturnType

public RelDataType inferReturnType(SqlOperatorBinding opBinding)

Description copied from interface: SqlReturnTypeInference

Infers the return type of a call to an SqlOperator.

Specified by:

inferReturnType in interface SqlReturnTypeInference

Parameters:

opBinding - description of operator binding

Returns:

inferred type; may be null