/*
* Hibernate Search, full-text search for your domain model
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later
* See the lgpl.txt file in the root directory or <http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
package org.hibernate.search.backend.impl.lucene.works;
import java.io.Serializable;
import java.util.Map;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.Term;
import org.hibernate.search.exception.AssertionFailure;
import org.hibernate.search.exception.SearchException;
import org.hibernate.search.backend.IndexingMonitor;
import org.hibernate.search.backend.LuceneWork;
import org.hibernate.search.bridge.util.impl.NumericFieldUtils;
import org.hibernate.search.engine.spi.DocumentBuilderIndexedEntity;
import org.hibernate.search.store.Workspace;
import org.hibernate.search.util.impl.ScopedAnalyzer;
import org.hibernate.search.util.logging.impl.Log;
import org.hibernate.search.util.logging.impl.LoggerFactory;
/**
* This applies the index update operation using the Lucene operation
* {@link org.apache.lucene.index.IndexWriter#updateDocument(Term, org.apache.lucene.document.Document, org.apache.lucene.analysis.Analyzer)}
*
* This is the most efficient way to update the index, but we can apply it only if the Document is uniquely identified
* by a single term (so no index sharing across entities or Numeric ids).
*
* @author Sanne Grinovero <sanne@hibernate.org> (C) 2012 Red Hat Inc.
*/
public final class UpdateExtWorkDelegate extends UpdateWorkDelegate {
private static final Log log = LoggerFactory.make();
private final AddWorkDelegate addDelegate;
private final Class<?> managedType;
private final DocumentBuilderIndexedEntity builder;
private final boolean idIsNumeric;
private final Workspace workspace;
UpdateExtWorkDelegate(Workspace workspace, AddWorkDelegate addDelegate) {
super( null, null );
this.workspace = workspace;
this.addDelegate = addDelegate;
this.managedType = workspace.getEntitiesInIndexManager().iterator().next();
this.builder = workspace.getDocumentBuilder( managedType );
this.idIsNumeric = DeleteWorkDelegate.isIdNumeric( builder );
}
@Override
public void performWork(LuceneWork work, IndexWriter writer, IndexingMonitor monitor) {
checkType( work );
final Serializable id = work.getId();
try {
if ( idIsNumeric ) {
log.tracef( "Deleting %s#%s by query using an IndexWriter#updateDocument as id is Numeric", managedType, id );
writer.deleteDocuments( NumericFieldUtils.createExactMatchQuery( builder.getIdKeywordName(), id ) );
// no need to log the Add operation as we'll log in the delegate
this.addDelegate.performWork( work, writer, monitor );
}
else {
log.tracef( "Updating %s#%s by id using an IndexWriter#updateDocument.", managedType, id );
Term idTerm = new Term( builder.getIdKeywordName(), work.getIdInString() );
Map<String, String> fieldToAnalyzerMap = work.getFieldToAnalyzerMap();
ScopedAnalyzer analyzer = builder.getAnalyzer();
analyzer = AddWorkDelegate.updateAnalyzerMappings( workspace, analyzer, fieldToAnalyzerMap );
writer.updateDocument( idTerm, work.getDocument(), analyzer );
}
workspace.notifyWorkApplied( work );
}
catch (Exception e) {
String message = "Unable to update " + managedType + "#" + id + " in index.";
throw new SearchException( message, e );
}
if ( monitor != null ) {
monitor.documentsAdded( 1l );
}
}
private void checkType(final LuceneWork work) {
if ( work.getEntityClass() != managedType ) {
throw new AssertionFailure( "Unexpected type: " + work.getEntityClass() + " This workspace expects: " + managedType );
}
}
}