RollbackIndexTask.java

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 java.io.PrintStream;

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

/**
 * Rollback the index writer.
 */
public class RollbackIndexTask extends PerfTask {

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

  boolean doWait = true;

  @Override
  public int doLogic() throws IOException {
    IndexWriter iw = getRunData().getIndexWriter();
    if (iw != null) {
      // If infoStream was set to output to a file, close it.
      PrintStream infoStream = iw.getInfoStream();
      if (infoStream != null && infoStream != System.out
          && infoStream != System.err) {
        infoStream.close();
      }
      iw.rollback();
      getRunData().setIndexWriter(null);
    }
    return 1;
  }
}