BuiltInSpecializedFunction (Flink : Table : Runtime 2.0.0 API)

java.lang.Object
- org.apache.flink.table.runtime.functions.BuiltInSpecializedFunction

All Implemented Interfaces:

org.apache.flink.table.functions.FunctionDefinition, org.apache.flink.table.functions.SpecializedFunction

Direct Known Subclasses:

UnnestRowsFunction
```
@Internal
public abstract class BuiltInSpecializedFunction
extends Object
implements org.apache.flink.table.functions.SpecializedFunction
```
Base class for built-in functions that need another level of specialization via BuiltInFunctionDefinition.specialize(SpecializedContext).
Subclasses can create a specific UDF runtime implementation targeted to the given (fully known) arguments and derived output type. Subclasses must provide a default constructor.

Nested Class Summary
- Nested classes/interfaces inherited from interface org.apache.flink.table.functions.SpecializedFunction
  org.apache.flink.table.functions.SpecializedFunction.ExpressionEvaluator, org.apache.flink.table.functions.SpecializedFunction.ExpressionEvaluatorFactory, org.apache.flink.table.functions.SpecializedFunction.SpecializedContext

Constructor Summary

Constructors
Modifier Constructor Description

protected BuiltInSpecializedFunction(org.apache.flink.table.functions.BuiltInFunctionDefinition definition)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`org.apache.flink.table.functions.FunctionKind`	`getKind()`
`Set<org.apache.flink.table.functions.FunctionRequirement>`	`getRequirements()`
`org.apache.flink.table.types.inference.TypeInference`	`getTypeInference(org.apache.flink.table.catalog.DataTypeFactory typeFactory)`
`boolean`	`isDeterministic()`

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

Methods inherited from interface org.apache.flink.table.functions.FunctionDefinition
supportsConstantFolding

Methods inherited from interface org.apache.flink.table.functions.SpecializedFunction
specialize

- Constructor Detail
  - BuiltInSpecializedFunction
```
protected BuiltInSpecializedFunction(org.apache.flink.table.functions.BuiltInFunctionDefinition definition)
```
- Method Detail
  - getKind
```
public org.apache.flink.table.functions.FunctionKind getKind()
```
    Specified by:
    
    getKind in interface org.apache.flink.table.functions.FunctionDefinition
  - getTypeInference
```
public org.apache.flink.table.types.inference.TypeInference getTypeInference(org.apache.flink.table.catalog.DataTypeFactory typeFactory)
```
    Specified by:
    
    getTypeInference in interface org.apache.flink.table.functions.FunctionDefinition
  - getRequirements
```
public Set<org.apache.flink.table.functions.FunctionRequirement> getRequirements()
```
    Specified by:
    
    getRequirements in interface org.apache.flink.table.functions.FunctionDefinition
  - isDeterministic
```
public boolean isDeterministic()
```
    Specified by:
    
    isDeterministic in interface org.apache.flink.table.functions.FunctionDefinition