Package org.apache.calcite.sql.type
Class TableFunctionReturnTypeInference
java.lang.Object
org.apache.calcite.sql.type.ExplicitReturnTypeInference
org.apache.calcite.sql.type.TableFunctionReturnTypeInference
- All Implemented Interfaces:
SqlReturnTypeInference
TableFunctionReturnTypeInference implements rules for deriving table function
output row types by expanding references to cursor parameters.
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Field Summary
Fields inherited from class org.apache.calcite.sql.type.ExplicitReturnTypeInference
protoType
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Constructor Summary
ConstructorDescriptionTableFunctionReturnTypeInference
(RelProtoDataType unexpandedOutputType, List<String> paramNames, boolean isPassthrough) -
Method Summary
Modifier and TypeMethodDescription@Nullable Set<RelColumnMapping>
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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TableFunctionReturnTypeInference
public TableFunctionReturnTypeInference(RelProtoDataType unexpandedOutputType, List<String> paramNames, boolean isPassthrough)
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Method Details
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getColumnMappings
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inferReturnType
Description copied from interface:SqlReturnTypeInference
Infers the return type of a call to anSqlOperator
.- Specified by:
inferReturnType
in interfaceSqlReturnTypeInference
- Overrides:
inferReturnType
in classExplicitReturnTypeInference
- Parameters:
opBinding
- description of operator binding- Returns:
- inferred type; may be null
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