/**
* 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.IndexReader;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import com.browseengine.bobo.api.BoboIndexReader;
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 BoboIndexReader _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 BoboIndexReader newIndexReader() throws IOException {
Directory idxDir=FSDirectory.open(_idxDir);
return newIndexReader(idxDir);
}
public static BoboIndexReader newIndexReader(Directory idxDir) throws IOException{
if (!IndexReader.indexExists(idxDir)) {
return null;
}
long start=System.currentTimeMillis();
IndexReader ir = IndexReader.open(idxDir,true);
BoboIndexReader reader;
try {
reader = BoboIndexReader.getInstance(ir);
} catch (IOException ioe) {
try { ir.close(); } catch (IOException ioe2) {}
throw ioe;
}
long end=System.currentTimeMillis();
if (logger.isDebugEnabled()){
logger.debug("New index loading took: "+(end-start));
}
return reader;
}
public synchronized void close() throws BrowseException{
try {
if (_reader!=null)
{
_reader.close();
}
} catch (IOException e) {
throw new BrowseException(e.getMessage(),e);
}
}
public BrowseResult browse(BrowseRequest req) throws BrowseException{
return BrowseServiceFactory.createBrowseService(_reader).browse(req);
}
}