Package org.apache.commons.configuration2.sync

A package containing interfaces and classes related to synchronization of configurations.

Whether a configuration object has to be thread-safe or not is application-specific. Therefore, this library allows an application to adapt configuration objects to their requirements regarding thread-safety by assigning them so-called Synchronizer objects. A configuration invokes its Synchronizer every time it is accessed (in read or write mode). If configurations are not accessed concurrently by multiple threads, a simple dummy Synchronizer can be used - this is also the default setting. To ensure thread-safety, a fully functional implementation has to be set.

Interface Summary

Interface	Description
Synchronizer	An interface controlling synchronization of configuration instances.
SynchronizerSupport	Definition of an interface for objects that can be associated with a Synchronizer.

Class Summary

Class	Description
ReadWriteSynchronizer	A special implementation of Synchronizer based on the JDK's ReentrantReadWriteLock class.

Enum Summary

Enum	Description
LockMode	An enumeration used by SynchronizerSupport to specify how an object is locked.
NoOpSynchronizer	An implementation of the Synchronizer interface which does not perform any synchronization.