/*
* Copyright (C) 2011 eXo Platform SAS.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.exoplatform.services.jcr.impl.core.query.lucene;
import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.Similarity;
import org.exoplatform.services.jcr.impl.core.query.IndexerIoModeHandler;
import org.exoplatform.services.jcr.impl.core.query.lucene.directory.DirectoryManager;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
/**
* Class extends {@link PersistentIndex} and designed to be used while Index is not yet started
* due to long running jobs, but since it is launched in clustered environment some concurrent
* repository operations can be performed (add, delete).
*
* @author <a href="mailto:nikolazius@gmail.com">Nikolay Zamosenchuk</a>
* @version $Id: OfflinePersistentIndex.java 34360 2009-07-22 23:58:59Z nzamosenchuk $
*
*/
public class OfflinePersistentIndex extends PersistentIndex
{
public static final String NAME = "offline";
private List<String> processedIDs;
/**
* Creates a new <code>OfflinePersistentIndex</code>.
*
* @param analyzer the analyzer for text tokenizing.
* @param similarity the similarity implementation.
* @param cache the document number cache
* @param directoryManager the directory manager.
* @throws IOException if an error occurs while opening / creating the
* index.
*/
OfflinePersistentIndex(Analyzer analyzer, Similarity similarity, DocNumberCache cache,
DirectoryManager directoryManager, IndexerIoModeHandler modeHandler) throws IOException
{
super(NAME, analyzer, similarity, cache, directoryManager, modeHandler);
this.processedIDs = new ArrayList<String>();
}
@Override
int getNumDocuments() throws IOException
{
return super.getNumDocuments();
}
@Override
int removeDocument(Term idTerm) throws IOException
{
int count = super.removeDocument(idTerm);
processedIDs.add(idTerm.text());
return count;
}
@Override
void addDocuments(Document[] docs) throws IOException
{
super.addDocuments(docs);
for (Document doc : docs)
{
processedIDs.add(doc.get(FieldNames.UUID));
}
}
@Override
synchronized void close()
{
processedIDs.clear();
super.close();
}
/**
* @return the list of UUIDs that where processed by this index. They are both added and removed nodes.
*/
public List<String> getProcessedIDs()
{
return Collections.unmodifiableList(processedIDs);
}
}