com.helger.commons.callback.adapter

Class AdapterRunnableToCallable<DATATYPE>

java.lang.Object

com.helger.commons.callback.adapter.AdapterRunnableToCallable<DATATYPE>

Type Parameters:

DATATYPE - The callable result type.

All Implemented Interfaces:

INonThrowingCallable<DATATYPE>, IThrowingCallable<DATATYPE>, Callable<DATATYPE>

@Immutable
public class AdapterRunnableToCallable<DATATYPE>
extends Object
implements INonThrowingCallable<DATATYPE>

A helper class that converts a Runnable into an INonThrowingCallable.

Author:

Philip Helger

Constructor Summary

Constructors

Constructor and Description
AdapterRunnableToCallable(Runnable aRunnable)
AdapterRunnableToCallable(Runnable aRunnable, DATATYPE aResult)

Method Summary

Methods

Modifier and Type	Method and Description
DATATYPE	call() The call back method to be called.
static AdapterRunnableToCallable<Object>	createAdapter(Runnable aRunnable) Create a callable that always returns null.
static <DATATYPE> AdapterRunnableToCallable<DATATYPE>	createAdapter(Runnable aRunnable, DATATYPE aResult) Create a callable that always returns the passed value.
DATATYPE	getResult()
Runnable	getRunnable()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

AdapterRunnableToCallable

public AdapterRunnableToCallable(@Nonnull
                         Runnable aRunnable)

AdapterRunnableToCallable

public AdapterRunnableToCallable(@Nonnull
                         Runnable aRunnable,
                         @Nullable
                         DATATYPE aResult)

Method Detail

getRunnable

@Nonnull
public Runnable getRunnable()

getResult

@Nullable
public DATATYPE getResult()

call

@Nullable
public DATATYPE call()

Description copied from interface: INonThrowingCallable

The call back method to be called.

Specified by:

call in interface INonThrowingCallable<DATATYPE>

Specified by:

call in interface Callable<DATATYPE>

Returns:

Anything. May be null or non- null depending on the implementation.

toString

public String toString()

Overrides:

toString in class Object

createAdapter

@Nonnull
public static AdapterRunnableToCallable<Object> createAdapter(@Nonnull
                                                      Runnable aRunnable)

Create a callable that always returns null.

Parameters:

aRunnable - The runnable to be executed.

Returns:

The created AdapterRunnableToCallable object.

createAdapter

@Nonnull
public static <DATATYPE> AdapterRunnableToCallable<DATATYPE> createAdapter(@Nonnull
                                                                   Runnable aRunnable,
                                                                   @Nullable
                                                                   DATATYPE aResult)

Create a callable that always returns the passed value.

Type Parameters:

DATATYPE - The callable result type.

Parameters:

aRunnable - The runnable to be executed.

aResult - The expected result from calling INonThrowingCallable.call() . May be null.

Returns:

The created AdapterRunnableToCallable object.