/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other contributors
* as indicated by the @authors tag. All rights reserved.
* See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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, v. 2.1.
* This program is distributed in the hope that it will be useful, but WITHOUT A
* 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,
* v.2.1 along with this distribution; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
package org.hibernate.search.backend.impl.lucene;
import java.util.Properties;
import org.apache.lucene.index.IndexWriter;
import org.hibernate.search.backend.LuceneWork;
import org.hibernate.search.exception.impl.ErrorContextBuilder;
import org.hibernate.search.indexes.impl.DirectoryBasedIndexManager;
import org.hibernate.search.spi.WorkerBuildContext;
/**
* @author Sanne Grinovero <sanne@hibernate.org> (C) 2011 Red Hat Inc.
*/
public class SharedIndexWorkspaceImpl extends AbstractWorkspaceImpl {
private final Object lock = new Object();
private int openWriterUsers = 0;
private boolean lastExitCloses = false;
public SharedIndexWorkspaceImpl(DirectoryBasedIndexManager indexManager, WorkerBuildContext context, Properties cfg) {
super( indexManager, context, cfg );
}
@Override
public void afterTransactionApplied(boolean someFailureHappened, boolean streaming) {
synchronized ( lock ) {
openWriterUsers--;
if ( openWriterUsers == 0 ) {
if ( someFailureHappened ) {
writerHolder.forceLockRelease();
}
else {
if ( ! streaming || lastExitCloses ) {
lastExitCloses = false;
writerHolder.closeIndexWriter();
}
}
}
else {
if ( ! someFailureHappened && ! streaming ) {
writerHolder.commitIndexWriter();
}
}
}
}
@Override
public IndexWriter getIndexWriter() {
synchronized ( lock ) {
openWriterUsers++;
return super.getIndexWriter();
}
}
public IndexWriter getIndexWriter(ErrorContextBuilder errorContextBuilder) {
synchronized ( lock ) {
openWriterUsers++;
return super.getIndexWriter( errorContextBuilder );
}
}
@Override
public void flush() {
synchronized ( lock ) {
if ( openWriterUsers == 0 ) {
writerHolder.closeIndexWriter();
}
else {
lastExitCloses = true;
writerHolder.commitIndexWriter();
}
}
}
@Override
public void notifyWorkApplied(LuceneWork work) {
incrementModificationCounter();
}
}