java.lang.Object
- org.apache.flink.table.types.extraction.TypeInferenceExtractor

```
@Internal
public final class TypeInferenceExtractor
extends Object
```
Reflection-based utility for extracting a TypeInference from a supported subclass of UserDefinedFunction.
The behavior of this utility can be influenced by DataTypeHints and FunctionHints which have higher precedence than the reflective information.
Note: This utility assumes that functions have been validated before regarding accessibility of class/methods and serializability.

Constructor Summary

Constructors
Constructor Description

TypeInferenceExtractor()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static TypeInference`	`forAggregateFunction(DataTypeFactory typeFactory, Class<? extends AggregateFunction<?,?>> function)`	Extracts a type inference from a `AggregateFunction`.
`static TypeInference`	`forAsyncScalarFunction(DataTypeFactory typeFactory, Class<? extends AsyncScalarFunction> function)`	Extracts a type inference from a `AsyncScalarFunction`.
`static TypeInference`	`forAsyncTableFunction(DataTypeFactory typeFactory, Class<? extends AsyncTableFunction<?>> function)`	Extracts a type inference from a `AsyncTableFunction`.
`static TypeInference`	`forProcedure(DataTypeFactory typeFactory, Class<? extends Procedure> procedure)`	Extracts a type in inference from a `Procedure`.
`static TypeInference`	`forScalarFunction(DataTypeFactory typeFactory, Class<? extends ScalarFunction> function)`	Extracts a type inference from a `ScalarFunction`.
`static TypeInference`	`forTableAggregateFunction(DataTypeFactory typeFactory, Class<? extends TableAggregateFunction<?,?>> function)`	Extracts a type inference from a `TableAggregateFunction`.
`static TypeInference`	`forTableFunction(DataTypeFactory typeFactory, Class<? extends TableFunction<?>> function)`	Extracts a type inference from a `TableFunction`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail
- TypeInferenceExtractor
```
public TypeInferenceExtractor()
```

Method Detail

forScalarFunction

public static TypeInference forScalarFunction(DataTypeFactory typeFactory,
                                              Class<? extends ScalarFunction> function)

Extracts a type inference from a ScalarFunction.

forAsyncScalarFunction

public static TypeInference forAsyncScalarFunction(DataTypeFactory typeFactory,
                                                   Class<? extends AsyncScalarFunction> function)

Extracts a type inference from a AsyncScalarFunction.

forAggregateFunction

public static TypeInference forAggregateFunction(DataTypeFactory typeFactory,
                                                 Class<? extends AggregateFunction<?,?>> function)

Extracts a type inference from a AggregateFunction.

forTableFunction

public static TypeInference forTableFunction(DataTypeFactory typeFactory,
                                             Class<? extends TableFunction<?>> function)

Extracts a type inference from a TableFunction.

forTableAggregateFunction

public static TypeInference forTableAggregateFunction(DataTypeFactory typeFactory,
                                                      Class<? extends TableAggregateFunction<?,?>> function)

Extracts a type inference from a TableAggregateFunction.

forAsyncTableFunction

public static TypeInference forAsyncTableFunction(DataTypeFactory typeFactory,
                                                  Class<? extends AsyncTableFunction<?>> function)

Extracts a type inference from a AsyncTableFunction.

forProcedure

public static TypeInference forProcedure(DataTypeFactory typeFactory,
                                         Class<? extends Procedure> procedure)

Extracts a type in inference from a Procedure.

Class TypeInferenceExtractor

Constructor Summary