jodd.util.concurrent.Task Maven / Gradle / Ivy
// Copyright (c) 2003-present, Jodd Team (http://jodd.org)
// All rights reserved.
//
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// this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
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//
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package jodd.util.concurrent;
import jodd.exception.UncheckedException;
import java.util.concurrent.Callable;
/**
* Piece of code that that has no result and may throw an exception.
* Similar to {@code Runnable} or {@code Callable}.
*/
@FunctionalInterface
public interface Task {
/**
* Creates a Task from Runnable.
*/
public static Task of(final Runnable runnable) {
return runnable::run;
}
/**
* Creates a Task from Callable.
*/
public static Task of(final Callable callable) {
return callable::call;
}
/**
* Wraps a task into a runnable.
*/
public default Runnable toRunnable() {
return () -> {
try {
run();
} catch (Exception e) {
throw new UncheckedException(e);
}
};
}
/**
* Wraps a task into a callable that returns {@code null}.
*/
public default Callable toCallable() {
return () -> {
run();
return null;
};
}
/**
* Runs a code or throws an exception if unable to do so.
*
* @throws Exception if unable to execute task
*/
void run() throws Exception;
}