com.browseengine.bobo.service.BrowseServiceFactory.java Source code

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Here is the source code for com.browseengine.bobo.service.BrowseServiceFactory.java

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/**
 * Bobo Browse Engine - High performance faceted/parametric search implementation 
 * that handles various types of semi-structured data.  Written in Java.
 * 
 * Copyright (C) 2005-2006  John Wang
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 * 
 * To contact the project administrators for the bobo-browse project, 
 * please go to https://sourceforge.net/projects/bobo-browse/, or 
 * send mail to owner@browseengine.com.
 */

package com.browseengine.bobo.service;

import java.io.File;
import java.io.IOException;

import org.apache.log4j.Logger;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.store.Directory;

import com.browseengine.bobo.api.BoboIndexReader;
import com.browseengine.bobo.api.BrowseException;
import com.browseengine.bobo.config.FieldConfiguration;
import com.browseengine.bobo.impl.BrowseServiceImpl;
import com.browseengine.bobo.impl.DefaultBrowseServiceImpl;

public class BrowseServiceFactory {

    private static Logger logger = Logger.getLogger(BrowseServiceFactory.class);

    public static BrowseService createBrowseService(File idxDir) throws BrowseException {
        if (idxDir == null)
            throw new IllegalArgumentException("Null index dir specified");
        return new BrowseServiceImpl(idxDir);
    }

    public static BrowseService createBrowseService(BoboIndexReader bReader) {
        return new DefaultBrowseServiceImpl(bReader);
    }

    public static BoboIndexReader getBoboIndexReader(Directory idxDir) throws BrowseException {
        try {
            if (!BoboIndexReader.indexExists(idxDir)) {
                throw new BrowseException("Index does not exist at: " + idxDir);
            }
        } catch (IOException ioe) {
            throw new BrowseException(ioe.getMessage(), ioe);
        }

        IndexReader reader = null;
        try {
            reader = IndexReader.open(idxDir);
        } catch (IOException ioe) {
            throw new BrowseException(ioe.getMessage(), ioe);
        }

        BoboIndexReader bReader = null;
        try {
            bReader = BoboIndexReader.getInstance(reader);
        } catch (IOException ioe) {
            if (reader != null) {
                try {
                    reader.close();
                } catch (IOException e) {
                    logger.error(e.getMessage(), e);
                }
            }
            throw new BrowseException(ioe.getMessage(), ioe);
        }
        return bReader;
    }

    public static BrowseService createBrowseService(Directory idxDir) throws BrowseException {
        BoboIndexReader bReader = getBoboIndexReader(idxDir);

        DefaultBrowseServiceImpl bs = (DefaultBrowseServiceImpl) createBrowseService(bReader);
        bs.setCloseReaderOnCleanup(true);
        return bs;
    }
}