//$Id: LuceneBackendQueueProcessor.java 15618 2008-11-25 18:38:50Z sannegrinovero $
package org.hibernate.search.backend.impl.lucene;
import java.util.List;
import java.util.Map;
import org.hibernate.search.backend.LuceneWork;
import org.hibernate.search.engine.DocumentBuilderIndexedEntity;
import org.hibernate.search.engine.SearchFactoryImplementor;
import org.hibernate.search.store.DirectoryProvider;
import org.hibernate.search.store.IndexShardingStrategy;
import org.hibernate.search.util.LoggerFactory;
import org.slf4j.Logger;
/**
* Apply the operations to Lucene directories.
*
* @author Emmanuel Bernard
* @author Hardy Ferentschik
* @author John Griffin
* @author Sanne Grinovero
*/
class LuceneBackendQueueProcessor implements Runnable {
private final List<LuceneWork> queue;
private final SearchFactoryImplementor searchFactoryImplementor;
private final Map<DirectoryProvider,PerDPResources> resourcesMap;
private final boolean sync;
private static final DpSelectionVisitor providerSelectionVisitor = new DpSelectionVisitor();
private static final Logger log = LoggerFactory.make();
LuceneBackendQueueProcessor(List<LuceneWork> queue,
SearchFactoryImplementor searchFactoryImplementor,
Map<DirectoryProvider,PerDPResources> resourcesMap,
boolean syncMode) {
this.sync = syncMode;
this.queue = queue;
this.searchFactoryImplementor = searchFactoryImplementor;
this.resourcesMap = resourcesMap;
}
public void run() {
QueueProcessors processors = new QueueProcessors( resourcesMap );
// divide the queue in tasks, adding to QueueProcessors by affected Directory.
for ( LuceneWork work : queue ) {
final Class<?> entityType = work.getEntityClass();
DocumentBuilderIndexedEntity<?> documentBuilder = searchFactoryImplementor.getDocumentBuilderIndexedEntity( entityType );
IndexShardingStrategy shardingStrategy = documentBuilder.getDirectoryProviderSelectionStrategy();
work.getWorkDelegate( providerSelectionVisitor ).addAsPayLoadsToQueue( work, shardingStrategy, processors );
}
try {
//this Runnable splits tasks in more runnables and then runs them:
processors.runAll( sync );
} catch (InterruptedException e) {
log.error( "Index update task has been interrupted", e );
}
}
}