org.apache.flink.util

Class OptionalFailure<T>

java.lang.Object

org.apache.flink.util.OptionalFailure<T>

All Implemented Interfaces:

Serializable

public class OptionalFailure<T>
extends Object
implements Serializable

Wrapper around an object representing either a success (with a given value) or a failure cause.

See Also:

Serialized Form

Method Summary

Modifier and Type	Method and Description
static <T> OptionalFailure<T>	createFrom(CheckedSupplier<T> valueSupplier)
boolean	equals(Object obj)
T	get()
Throwable	getFailureCause()
T	getUnchecked()
int	hashCode()
boolean	isFailure()
static <T> OptionalFailure<T>	of(T value)
static <T> OptionalFailure<T>	ofFailure(Throwable failureCause)
String	toString()

Methods inherited from class java.lang.Object

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

Method Detail

of

public static <T> OptionalFailure<T> of(T value)

ofFailure

public static <T> OptionalFailure<T> ofFailure(Throwable failureCause)

createFrom

public static <T> OptionalFailure<T> createFrom(CheckedSupplier<T> valueSupplier)

Returns:

wrapped OptionalFailure returned by valueSupplier or wrapped failure if valueSupplier has thrown an Exception.

get

public T get()
      throws FlinkException

Returns:

stored value or throw a FlinkException with failureCause.

Throws:

FlinkException

getUnchecked

public T getUnchecked()
               throws FlinkRuntimeException

Returns:

same as get() but throws a FlinkRuntimeException.

Throws:

FlinkRuntimeException

getFailureCause

public Throwable getFailureCause()

isFailure

public boolean isFailure()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

toString

public String toString()

Overrides:

toString in class Object