/*
* JBoss, Home of Professional Open Source
* Copyright 2010 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* 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.infinispan.lucene.profiling;
import java.io.IOException;
import java.util.HashSet;
import java.util.Set;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
/**
* LuceneReaderThread is going to perform searches on the Directory until it's interrupted.
* Good for performance comparisons and stress tests.
* It needs a SharedState object to be shared with other readers and writers on the same directory to
* be able to throw exceptions in case it's able to detect an illegal state.
*
* @author Sanne Grinovero
* @since 4.0
*/
public class LuceneReaderThread extends LuceneUserThread {
protected IndexSearcher searcher;
protected IndexReader indexReader;
LuceneReaderThread(Directory dir, SharedState state) {
super(dir, state);
}
@Override
protected void testLoop() throws IOException {
// take ownership of some strings, so that no other thread will change status for these:
Set<String> strings = new HashSet<String>();
int numElements = state.stringsInIndex.drainTo(strings, 50);
refreshIndexReader();
for (String term : strings) {
Query query = new TermQuery(new Term("main", term));
TopDocs docs = searcher.search(query, null, 1);
if (docs.totalHits != 1) {
throw new RuntimeException("String '" + term + "' should exist but was not found in index");
}
}
// put the strings back at their place:
state.stringsInIndex.addAll(strings);
state.incrementIndexSearchesCount(numElements);
}
protected void refreshIndexReader() throws CorruptIndexException, IOException {
if (indexReader == null) {
indexReader = IndexReader.open(directory, true);
}
else {
IndexReader before = indexReader;
indexReader = indexReader.reopen();
if (before != indexReader) {
before.close();
}
}
if (searcher != null) {
searcher.close();
}
searcher = new IndexSearcher(indexReader);
}
@Override
protected void cleanup() throws IOException {
if (indexReader != null)
indexReader.close();
}
}