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Java Source Code / Java Documentation » Search Engine » compass 2.0 » org.compass.gps.device.hibernate.indexer

Source Cross Reference Class Diagram Java Document (Java Doc)

java.lang .Object

org.compass.gps.device.hibernate.indexer .ScrollableHibernateIndexEntitiesIndexer

ScrollableHibernateIndexEntitiesIndexer

public class ScrollableHibernateIndexEntitiesIndexer implements HibernateIndexEntitiesIndexer(Code)

A Hibernate indexer uses Hibernate ScrollableResults to index the database instead of using setFirstResult and setMaxResults. Using scrollable results yields better performance especially for large result set.

First tries to call org.compass.gps.device.hibernate.HibernateQueryProvider.createCriteria(org.hibernate.Sessionorg.compass.gps.device.hibernate.entities.EntityInformation) in order to use Hibernate Criteria to construct the cursor. If no criteria is returned (null is returned), Hibernate Query is used by calling org.compass.gps.device.hibernate.HibernateQueryProvider.createQuery(org.hibernate.Sessionorg.compass.gps.device.hibernate.entities.EntityInformation) .

When using Criteria, by default, orders the results by entity id. This can be turned off either globablly using ScrollableHibernateIndexEntitiesIndexer.setPerformOrderById(boolean) , or per entity using ScrollableHibernateIndexEntitiesIndexer.setPerformOrderById(String,boolean) .
author:
kimchy

Method Summary
public void	performIndex(CompassSession session, IndexEntity[] entities)
public void	setHibernateGpsDevice(HibernateGpsDevice device)
public void	setPerformOrderById(boolean performOrderById) Should this indxer order by the ids when `Criteria` is available.
public void	setPerformOrderById(String entity, boolean performOrderById) Should this indxer order by the ids when `Criteria` is available for the given entity.

Method Detail

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

setHibernateGpsDevice
public void setHibernateGpsDevice(HibernateGpsDevice device)(Code)

setPerformOrderById
public void setPerformOrderById(boolean performOrderById)(Code)
	Should this indxer order by the ids when `Criteria` is available. Defaults to `true`.

setPerformOrderById
public void setPerformOrderById(String entity, boolean performOrderById)(Code)
	Should this indxer order by the ids when `Criteria` is available for the given entity. Defaults to ScrollableHibernateIndexEntitiesIndexer.setPerformOrderById(boolean) .

Methods inherited from java.lang.Object

native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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