/* $Id: LuceneBackendQueueProcessor.java 19861 2010-06-30 13:38:13Z epbernard $
*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2009, Red Hat, Inc. and/or its affiliates or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat, Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
* for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
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;
import org.hibernate.search.exception.ErrorHandler;
import org.hibernate.search.exception.impl.ErrorContextBuilder;
/**
* 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 final ErrorHandler errorHandler;
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;
this.errorHandler = searchFactoryImplementor.getErrorHandler();
}
public void run() {
QueueProcessors processors = new QueueProcessors( resourcesMap );
// divide the queue in tasks, adding to QueueProcessors by affected Directory.
try {
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 );
}
//this Runnable splits tasks in more runnables and then runs them:
processors.runAll( sync );
} catch ( Exception e ) {
log.error( "Error in backend", e );
ErrorContextBuilder builder = new ErrorContextBuilder();
builder.errorThatOccurred( e );
errorHandler.handle( builder.createErrorContext() );
}
}
}