Package org.apache.tapestry5.ioc.internal.util

# Class OneShotLock

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

  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 Details

  - ### OneShotLock

    public OneShotLock()

- ## Method Details

  - ### 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.