org.mule.runtime.core.api.util.func

Class Once

java.lang.Object

org.mule.runtime.core.api.util.func.Once

public class Once
extends Object

Executes a given CheckedRunnable only once.

Once the runOnce() method has been successfully executed, subsequent invocations to such method will have no effect. Notice that the key word here is successfully. If the method fails, each invocation to runOnce() WILL run the delegate until it completes successfully.

Instances are thread safe, which means that if two threads are competing for the first successful invocation, only one will prevail and the other one will get a no-op execution.

Since:

4.0

Method Summary

Modifier and Type	Method and Description
static Once	of(CheckedRunnable runnable) Creates a new instance
void	runOnce() Runs (or not) the delegate according to the behaviour described on the class javadoc

Methods inherited from class java.lang.Object

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

Method Detail

of

public static Once of(CheckedRunnable runnable)

Creates a new instance

Parameters:

runnable - the delegate to be executed only once

Returns:

a new instance

runOnce

public void runOnce()

Runs (or not) the delegate according to the behaviour described on the class javadoc