org.hibernate.search.backend.spi

Interface Backend

All Known Implementing Classes:

BlackHoleBackend, JGroupsBackend, JGroupsMasterBackend, JGroupsSlaveBackend, JndiJMSBackend, LocalBackend, ReflectionBasedBackend

public interface Backend

Interface for different types of queue processors. Implementations need a no-arg constructor.

Author:

Yoann Rodiere

Experimental

This type is under active development. You should be prepared for incompatible changes in future releases.

Method Summary

Modifier and Type	Method and Description
default void	close() Used to shutdown and eventually release resources.
BackendQueueProcessor	createQueueProcessor(IndexManager indexManager, WorkerBuildContext context) Called exactly once for each index manager using this backend.
default void	initialize(Properties properties, WorkerBuildContext context) Used at startup, called once as first method.
default boolean	isTransactional()

Method Detail

initialize

default void initialize(Properties properties,
                        WorkerBuildContext context)

Used at startup, called once as first method.

Parameters:

properties - all configuration properties

context - context giving access to required meta data

close

default void close()

Used to shutdown and eventually release resources. No other method should be used after this one.

The produced queue processors are guaranteed to be closed before this is called.

isTransactional

default boolean isTransactional()

Returns:

true if this backend is able to enlist in ongoing transactions.

createQueueProcessor

BackendQueueProcessor createQueueProcessor(IndexManager indexManager,
                                           WorkerBuildContext context)

Called exactly once for each index manager using this backend.

Parameters:

indexManager - the IndexManager the BackendQueueProcessor will point to

context - context giving access to required meta data

Returns:

a BackendQueueProcessor that will send its works to the given index manager