org.hibernate.search.batchindexing.impl

Class IdentifierProducer

java.lang.Object

org.hibernate.search.batchindexing.impl.IdentifierProducer

All Implemented Interfaces:

StatelessSessionAwareRunnable

public class IdentifierProducer
extends Object
implements StatelessSessionAwareRunnable

This Runnable is going to feed the indexing queue with the identifiers of all the entities going to be indexed. This step in the indexing process is not parallel (should be done by one thread per type) so that a single transaction is used to define the group of entities to be indexed. Produced identifiers are put in the destination queue grouped in List instances: the reason for this is to load them in batches in the next step and reduce contention on the queue.

Author:

Sanne Grinovero

Constructor Summary

Constructors

Constructor and Description
IdentifierProducer(ProducerConsumerQueue<List<Serializable>> fromIdentifierListToEntities, SessionFactory sessionFactory, int objectLoadingBatchSize, Class<?> indexedType, MassIndexerProgressMonitor monitor, long objectsLimit, ErrorHandler errorHandler, int idFetchSize)

Method Summary

Methods

Modifier and Type	Method and Description
void	run(StatelessSession upperSession)

Methods inherited from class java.lang.Object

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

Constructor Detail

IdentifierProducer

public IdentifierProducer(ProducerConsumerQueue<List<Serializable>> fromIdentifierListToEntities,
                  SessionFactory sessionFactory,
                  int objectLoadingBatchSize,
                  Class<?> indexedType,
                  MassIndexerProgressMonitor monitor,
                  long objectsLimit,
                  ErrorHandler errorHandler,
                  int idFetchSize)

Parameters:

fromIdentifierListToEntities - the target queue where the produced identifiers are sent to

sessionFactory - the Hibernate SessionFactory to use to load entities

objectLoadingBatchSize - affects mostly the next consumer: IdentifierConsumerEntityProducer

indexedType - the entity type to be loaded

monitor - to monitor indexing progress

objectsLimit - if not zero

errorHandler - how to handle unexpected errors

Method Detail

run

public void run(StatelessSession upperSession)
         throws Exception

Specified by:

run in interface StatelessSessionAwareRunnable

Throws:

Exception