/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, 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.store.optimization.impl;
import java.util.Properties;
import org.apache.lucene.index.IndexWriter;
import org.hibernate.search.store.Workspace;
import org.hibernate.search.store.optimization.OptimizerStrategy;
import org.hibernate.search.util.configuration.impl.ConfigurationParseHelper;
import org.hibernate.search.indexes.spi.IndexManager;
import org.hibernate.search.util.logging.impl.Log;
import org.hibernate.search.util.logging.impl.LoggerFactory;
/**
* Optimization strategy triggered after a certain amount of operations
*
* @author Emmanuel Bernard
*/
public class IncrementalOptimizerStrategy extends ExplicitOnlyOptimizerStrategy implements OptimizerStrategy {
private static final Log log = LoggerFactory.make();
private int operationMax = -1;
private int transactionMax = -1;
private volatile long operations = 0;
private volatile long transactions = 0;
private volatile long optimizationsPerformed = 0;
private final Object lockOnCounters = new Object();
@Override
public boolean performOptimization(IndexWriter writer) {
boolean done = super.performOptimization( writer );
if ( done ) {
synchronized ( lockOnCounters ) {
operations = 0;
transactions = 0;
optimizationsPerformed++;
}
}
return done;
}
private boolean needOptimization() {
return (operationMax != -1 && operations >= operationMax)
|| (transactionMax != -1 && transactions >= transactionMax);
}
@Override
public void addOperationWithinTransactionCount(long operations) {
synchronized ( lockOnCounters ) {
this.operations += operations;
this.transactions++;
}
}
@Override
public void optimize(Workspace workspace) {
if ( needOptimization() ) {
log.debugv( "Optimize {0} after {1} operations and {2} transactions",
indexName, operations, transactions );
IndexWriter writer = workspace.getIndexWriter();
try {
performOptimization( writer );
}
finally {
workspace.afterTransactionApplied( false, false );
}
}
}
@Override
public void initialize(IndexManager indexManager, Properties indexProperties) {
super.initialize( indexManager, indexProperties );
operationMax = ConfigurationParseHelper.getIntValue( indexProperties, "operation_limit.max", -1 );
transactionMax = ConfigurationParseHelper.getIntValue( indexProperties, "transaction_limit.max", -1 );
}
public long getOptimizationsPerformed() {
return optimizationsPerformed;
}
}