Package org.apache.openjpa.slice

Extended OpenJPA Interfaces for distributed databases. This package contains interface definitions for distribution policy and distributed configuration.

Interface Summary

Interface	Description
DistributedBroker	Extension to Broker to allow access to virtual data store.
DistributedBrokerFactory	Extension to BrokerFactory to allow dynamically add/remove slices.
DistributedConfiguration	A configuration for multiple data stores, each referred as slice.
DistributedStoreManager	A specialized Store Manager that encapsulates multiple concrete Store Managers using Distributed Template (or Composite) Design Pattern.
DistributionPolicy	Policy to select one of the physical databases referred as slice in which a given persistent instance will be stored.
FinderTargetPolicy	Policy to select one or more of the physical databases referred as slice in which a given finder will be executed.
QueryTargetPolicy	Policy to select one or more of the physical databases referred as slice in which a given query will be executed.
ReplicationPolicy	Policy to select one or more of the physical databases referred as slice in which a given persistent instance will be persisted.

Class Summary

Class	Description
DistributedBrokerImpl	A specialized Broker to associate slice identifiers with the StateManagers as they are persisted in a cascade.
DistributedQueryImpl	Extension with slice locking policy.
DistributionPolicy.Default	Implements a default distribution policy to store the given instance to a randomly selected available slice.
ProductDerivation	Derives configuration for Slice.
ReentrantSliceLock	A reentrant lock that lets a child to work with the parent's lock.
ReplicationPolicy.Default	Implements a default replication policy to replicate the given instance across all available slices.
Slice	Represents a database slice of immutable logical name, a configuration and status.
SliceImplHelper	Utility methods to determine the target slices for a persistence capable instance by calling back to user-specified distribution policy.
SliceInfo	Holder of slice names where a persistent instance is stored.
SlicePersistence	A helper to determine the slice identifier of an instance.
SliceThread	A thread to execute operation against each database slice.

Enum Summary

Enum	Description
Slice.Status