NullLock

Dummy lock implementation with no real effect.

Implements: ILock

Description

The NullLock allows you to create a dummy lock with no real effect.

Important points

  • It can be used in testing or in situations when a lock is required but must be disabled.

Instance methods

acquireLock

Makes multiple attempts to acquire a lock by its key within a given time interval.

public void acquireLock(IContext context, String key, int ttl, long timeout)

  • context: IContext - (optional) a context to trace execution through call chain.
  • key: String - a unique lock key to acquire.
  • ttl: int - a lock timeout (time to live) in milliseconds.
  • timeout: long - a lock acquisition timeout.

releaseLock

Releases prevously acquired lock by its key.

public releaseLock(context: IContext, key: string)

  • context: IContext - (optional) a context to trace execution through call chain.
  • key: string - a unique lock key to release.

tryAcquireLock

Makes a single attempt to acquire a lock by its key. It returns immediately a positive or negative result.

public boolean tryAcquireLock(IContext context, String key, int ttl)

  • context: IContext - (optional) a context to trace execution through call chain.
  • key: String - a unique lock key to acquire.
  • ttl: int - a lock timeout (time to live) in milliseconds.
  • returns: boolean - lock result

See also