package org.apache.lucene.benchmark.byTask.tasks;

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import java.io.IOException;

import org.apache.lucene.benchmark.byTask.PerfRunData;
import org.apache.lucene.index.IndexReader;

/**
 * Close index reader.
 * <br>Other side effects: index reader in perfRunData is nullified.
 * <br>This would cause read related tasks to reopen their own reader. 
 */
public class CloseReaderTask extends PerfTask {

  public CloseReaderTask(PerfRunData runData) {
    super(runData);
  }

  @Override
  public int doLogic() throws IOException {
    IndexReader reader = getRunData().getIndexReader();
    getRunData().setIndexReader(null);
    if (reader.getRefCount() != 1) {
      System.out.println("WARNING: CloseReader: reference count is currently " + reader.getRefCount());
    }
    reader.decRef();
    return 1;
  }

}
