# Package org.eclipse.rdf4j.sail.helpers

Abstract base implementation and internal helper classes for Sail implementations.

- Class Summary
  Class | Description
  --- | ---
  AbstractNotifyingSail | A base `NotifyingSail` implementation that takes care of common sail tasks, including proper closing of active connections and a grace period for active connections during shutdown of the store.
  AbstractNotifyingSailConnection | Abstract Class offering base functionality for SailConnection implementations.
  AbstractSail | An abstract Sail implementation that takes care of common sail tasks, including proper closing of active connections and a grace period for active connections during shutdown of the store.
  AbstractSailConnection | Abstract Class offering base functionality for SailConnection implementations.
  DefaultSailChangedEvent | Default implementation of the SailChangedEvent interface.
  DirectoryLockManager | Used to create a lock in a directory.
  NotifyingSailConnectionBase | Deprecated, for removal: This API element is subject to removal in a future version. since RDF4J 4.0.
  NotifyingSailConnectionWrapper | An implementation of the `NotifyingSailConnection` interface that wraps another `NotifyingSailConnection` object and forwards any method calls to the wrapped transaction.
  NotifyingSailWrapper | An implementation of the StackableSail interface that wraps another Sail object and forwards any relevant calls to the wrapped Sail.
  SailConnectionWrapper | An implementation of the SailConnection interface that wraps another SailConnection object and forwards any method calls to the wrapped connection.
  SailUtil | Defines utility methods for working with Sails.
  SailWrapper | An implementation of the StackableSail interface that wraps another Sail object and forwards any relevant calls to the wrapped Sail.