/*
* 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.backend;
import java.util.Map;
import java.util.Properties;
import org.hibernate.annotations.common.util.StringHelper;
import org.hibernate.search.Environment;
import org.hibernate.search.backend.impl.TransactionalWorker;
import org.hibernate.search.cfg.SearchConfiguration;
import org.hibernate.search.spi.WorkerBuildContext;
import org.hibernate.search.util.ClassLoaderHelper;
/**
* @author Emmanuel Bernard
*/
public abstract class WorkerFactory {
private static Properties getProperties(SearchConfiguration cfg) {
Properties props = cfg.getProperties();
Properties workerProperties = new Properties();
for ( Map.Entry entry : props.entrySet() ) {
String key = (String) entry.getKey();
if ( key.startsWith( Environment.WORKER_PREFIX ) ) {
workerProperties.setProperty( key, (String) entry.getValue() );
}
}
return workerProperties;
}
public static Worker createWorker(SearchConfiguration cfg, WorkerBuildContext context) {
Properties props = getProperties( cfg );
String impl = props.getProperty( Environment.WORKER_SCOPE );
Worker worker;
if ( StringHelper.isEmpty( impl ) ) {
worker = new TransactionalWorker();
}
else if ( "transaction".equalsIgnoreCase( impl ) ) {
worker = new TransactionalWorker();
}
else {
worker = ClassLoaderHelper.instanceFromName(
Worker.class,
impl, WorkerFactory.class, "worker"
);
}
worker.initialize( props, context );
return worker;
}
}