Package org.apache.calcite.sql.type
Class SqlTypeTransformCascade
java.lang.Object
org.apache.calcite.sql.type.SqlTypeTransformCascade
- All Implemented Interfaces:
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
SqlTypeTransform
s.-
Constructor Summary
ConstructorDescriptionSqlTypeTransformCascade
(SqlReturnTypeInference rule, SqlTypeTransform... transforms) Creates a SqlTypeTransformCascade from a rule and an array of one or more transforms. -
Method Summary
Modifier and TypeMethodDescription@Nullable RelDataType
inferReturnType
(SqlOperatorBinding opBinding) Infers the return type of a call to anSqlOperator
.Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface org.apache.calcite.sql.type.SqlReturnTypeInference
andThen, orElse
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Constructor Details
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SqlTypeTransformCascade
Creates a SqlTypeTransformCascade from a rule and an array of one or more transforms.
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Method Details
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inferReturnType
Description copied from interface:SqlReturnTypeInference
Infers the return type of a call to anSqlOperator
.- Specified by:
inferReturnType
in interfaceSqlReturnTypeInference
- Parameters:
opBinding
- description of operator binding- Returns:
- inferred type; may be null
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