org.compass.gps.device.jpa.indexer
Class OpenJPAJpaIndexEntitiesIndexer

java.lang.Object
  org.compass.gps.device.jpa.indexer.OpenJPAJpaIndexEntitiesIndexer

All Implemented Interfaces:

JpaIndexEntitiesIndexer, IndexEntitiesIndexer

public class OpenJPAJpaIndexEntitiesIndexer
extends Object
implements JpaIndexEntitiesIndexer

OpenJPA indexer that uses fetch plan to scroll the result set and index it. Performs better than JPA setFirstResult and setMaxResults especially for large result sets.

Author:

kimchy

Constructor Summary

OpenJPAJpaIndexEntitiesIndexer()

Method Summary

void	performIndex(CompassSession session, IndexEntity[] entities) Performs the actual indexing of the list of index entities.
void	setJpaGpsDevice(JpaGpsDevice jpaGpsDevice) Sets the jpa gps device for the given indexer.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

OpenJPAJpaIndexEntitiesIndexer

public OpenJPAJpaIndexEntitiesIndexer()

Method Detail

setJpaGpsDevice

public void setJpaGpsDevice(JpaGpsDevice jpaGpsDevice)

Description copied from interface: JpaIndexEntitiesIndexer

Sets the jpa gps device for the given indexer. Called once when the device starts up.

Specified by:

setJpaGpsDevice in interface JpaIndexEntitiesIndexer

performIndex

public void performIndex(CompassSession session,
                         IndexEntity[] entities)

Description copied from interface: IndexEntitiesIndexer

Performs the actual indexing of the list of index entities. Usually, an index entity represent a group of indexable content (like a certain class when using ORM, or a select statement). This method perform the fetching of the data and indexing it in Compass using the provided Compass session.

Specified by:

performIndex in interface IndexEntitiesIndexer

Parameters:

session - The compass session to index the data with

entities - A list of entities to perform the indexing by