/// <summary>
/// Attempt to lock the specified item and return immediately.
/// </summary>
/// <remarks>
/// This method behaves exactly as if it simply performs the call
/// <b>Lock(key, 0)</b>.
/// </remarks>
/// <param name="key">
/// Key being locked.
/// </param>
/// <returns>
/// <b>true</b> if the item was successfully locked; <b>false</b>
/// otherwise.
/// </returns>
public virtual bool Lock(object key)
{
return(NamedCache.Lock(key));
}
/// <summary>
/// Attempt to lock the specified item within the specified period of
/// time.
/// </summary>
/// <remarks>
/// <p>
/// The item doesn't have to exist to be <i>locked</i>. While the
/// item is locked there is known to be a <i>lock holder</i> which
/// has an exclusive right to modify (calling put and remove methods)
/// that item.</p>
/// <p>
/// Lock holder is an abstract concept that depends on the
/// IConcurrentCache implementation. For example, holder could
/// be a cluster member or a thread (or both).</p>
/// <p>
/// Locking strategy may vary for concrete implementations as well.
/// Lock could have an expiration time (this lock is sometimes called
/// a "lease") or be held indefinitely (until the lock holder
/// terminates).</p>
/// <p>
/// Some implementations may allow the entire map to be locked. If
/// the map is locked in such a way, then only a lock holder is
/// allowed to perform any of the "put" or "remove" operations.</p>
/// <p>
/// Passing the special constant
/// <see cref="LockScope.LOCK_ALL"/> as the <i>key</i>
/// parameter to indicate the cache lock is not allowed for
/// WrapperNamedCache and will cause an exception to be thrown.</p>
/// </remarks>
/// <param name="key">
/// Key being locked.
/// </param>
/// <param name="waitTimeMillis">
/// The number of milliseconds to continue trying to obtain a lock;
/// pass zero to return immediately; pass -1 to block the calling
/// thread until the lock could be obtained.
/// </param>
/// <returns>
/// <b>true</b> if the item was successfully locked within the
/// specified time; <b>false</b> otherwise.
/// </returns>
public virtual bool Lock(object key, long waitTimeMillis)
{
return(NamedCache.Lock(key, waitTimeMillis));
}