org.apache.calcite.sql.type

Class SqlTypeTransformCascade

java.lang.Object

org.apache.calcite.sql.type.SqlTypeTransformCascade

All Implemented Interfaces:

SqlReturnTypeInference

public class SqlTypeTransformCascade
extends Object
implements SqlReturnTypeInference

Strategy to infer the type of an operator call from the type of the operands by using one SqlReturnTypeInference rule and a combination of SqlTypeTransforms

Constructor Summary

Constructors

Constructor and Description
SqlTypeTransformCascade(SqlReturnTypeInference rule, SqlTypeTransform... transforms) Creates a SqlTypeTransformCascade from a rule and an array of one or more transforms.

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

SqlTypeTransformCascade

public SqlTypeTransformCascade(SqlReturnTypeInference rule,
                       SqlTypeTransform... transforms)

Creates a SqlTypeTransformCascade from a rule and an array of one or more transforms.

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