com.ucieffe.index.WikipediaMassIndexer.java Source code

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Here is the source code for com.ucieffe.index.WikipediaMassIndexer.java

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/*
 * 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 com.ucieffe.index;

import java.util.Date;

import org.hibernate.CacheMode;
import org.hibernate.search.MassIndexer;
import org.hibernate.search.batchindexing.MassIndexerProgressMonitor;
import org.hibernate.search.impl.SimpleIndexingProgressMonitor;
import org.hibernate.search.jpa.FullTextEntityManager;
import org.hibernate.search.jpa.impl.FullTextEntityManagerImpl;

import com.ucieffe.model.Text;
import com.ucieffe.util.EntityManagerUtils;

/**
 * Starts a batch operation to rebuild the Lucene index out of the database data.
 * 
 * @author Sanne Grinovero <sanne@hibernate.org>
 * @author Davide Di Somma <davide.disomma@gmail.com>
 */
public class WikipediaMassIndexer {

    public static void main(String[] args) {

        FullTextEntityManager ftEntityManager = new FullTextEntityManagerImpl(
                EntityManagerUtils.getEntityManagerInstance());

        MassIndexerProgressMonitor monitor = new SimpleIndexingProgressMonitor(1500);
        MassIndexer massIndexer = ftEntityManager.createIndexer(Text.class);
        try {
            massIndexer.purgeAllOnStart(true).optimizeAfterPurge(true).optimizeOnFinish(true)
                    .batchSizeToLoadObjects(35).threadsForSubsequentFetching(3).threadsToLoadObjects(8)
                    .threadsForIndexWriter(4).progressMonitor(monitor).cacheMode(CacheMode.IGNORE).startAndWait();
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            System.out.println("Ended at: " + new Date());
        }
    }
}