OneShotLock (Tapestry API - 5.7.2)

java.lang.Object
- org.apache.tapestry5.commons.internal.util.LockSupport
- - org.apache.tapestry5.ioc.internal.util.OneShotLock

```
public class OneShotLock
extends LockSupport
```
Logic for handling one shot semantics for classes; classes that include a method (or methods) that "locks down" the instance, to prevent it from being used again in the future.

Constructor Summary

Constructors
Constructor Description

OneShotLock()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`check()`	Checks to see if the lock has been set (via `lock()`).
`void`	`lock()`	Checks the lock, then sets it.

Methods inherited from class org.apache.tapestry5.commons.internal.util.LockSupport
acquireReadLock, downgradeWriteLockToReadLock, releaseReadLock, releaseWriteLock, takeWriteLock, upgradeReadLockToWriteLock

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - OneShotLock
```
public OneShotLock()
```
- Method Detail
  - check
```
public void check()
```
    Checks to see if the lock has been set (via lock()).
    
    Throws:
    
    IllegalStateException - if the lock is set
  - lock
```
public void lock()
```
    Checks the lock, then sets it.