/**
* 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.impl;
import java.io.File;
import java.io.IOException;
import org.apache.log4j.Logger;
import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import com.browseengine.bobo.api.BoboMultiReader;
import com.browseengine.bobo.api.BrowseException;
import com.browseengine.bobo.api.BrowseRequest;
import com.browseengine.bobo.api.BrowseResult;
import com.browseengine.bobo.service.BrowseService;
import com.browseengine.bobo.service.BrowseServiceFactory;
public class BrowseServiceImpl implements BrowseService {
private static final Logger logger = Logger.getLogger(BrowseServiceImpl.class);
private final File _idxDir;
private BoboMultiReader _reader;
public BrowseServiceImpl(File idxDir) {
super();
_idxDir = idxDir;
try {
_reader = newIndexReader();
} catch (IOException e) {
logger.error(e.getMessage(), e);
}
}
public BrowseServiceImpl() {
this(new File(System.getProperty("index.directory")));
}
private BoboMultiReader newIndexReader() throws IOException {
Directory idxDir = FSDirectory.open(_idxDir);
return newIndexReader(idxDir);
}
public static BoboMultiReader newIndexReader(Directory idxDir) throws IOException {
if (!DirectoryReader.indexExists(idxDir)) {
return null;
}
long start = System.currentTimeMillis();
DirectoryReader directoryReader = DirectoryReader.open(idxDir);
BoboMultiReader reader;
try {
reader = BoboMultiReader.getInstance(directoryReader);
} catch (IOException ioe) {
throw ioe;
} finally {
directoryReader.close();
}
long end = System.currentTimeMillis();
if (logger.isDebugEnabled()) {
logger.debug("New index loading took: " + (end - start));
}
return reader;
}
@Override
public synchronized void close() throws BrowseException {
try {
if (_reader != null) {
_reader.close();
}
} catch (IOException e) {
throw new BrowseException(e.getMessage(), e);
}
}
@Override
public BrowseResult browse(BrowseRequest req) throws BrowseException {
return BrowseServiceFactory.createBrowseService(_reader).browse(req);
}
}