org.apache.flink.table.types.inference.strategies

Class NullableTypeStrategy

java.lang.Object

org.apache.flink.table.types.inference.strategies.NullableTypeStrategy

All Implemented Interfaces:

TypeStrategy

@Internal
public final class NullableTypeStrategy
extends Object
implements TypeStrategy

A type strategy that can be used to make a result type nullable if any of the selected input arguments is nullable. Otherwise the type will be not null.

Constructor Summary

Constructors

Constructor and Description
NullableTypeStrategy(ConstantArgumentCount includedArguments, TypeStrategy initialStrategy)

Method Summary

Modifier and Type	Method and Description
boolean	equals(Object o)
int	hashCode()
Optional<DataType>	inferType(CallContext callContext) Infers a type from the given function call.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NullableTypeStrategy

public NullableTypeStrategy(ConstantArgumentCount includedArguments,
                            TypeStrategy initialStrategy)

Method Detail

inferType

public Optional<DataType> inferType(CallContext callContext)

Description copied from interface: TypeStrategy

Infers a type from the given function call.

Specified by:

inferType in interface TypeStrategy

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object