package org.apache.blur.lucene.search;

/**
 * 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.util.concurrent.TimeUnit;

import org.apache.lucene.index.AtomicReaderContext;
import org.apache.lucene.search.Collector;
import org.apache.lucene.search.Scorer;

public class SlowCollector extends Collector {

  private static final long DELAY = TimeUnit.MILLISECONDS.toMillis(250);
  private Collector _collector;

  public SlowCollector(Collector collector) {
    _collector = collector;
  }

  @Override
  public void setScorer(Scorer scorer) throws IOException {
    _collector.setScorer(scorer);
  }

  @Override
  public void collect(int doc) throws IOException {
    _collector.collect(doc);
    try {
      Thread.sleep(DELAY);
    } catch (InterruptedException e) {
      return;
    }
  }

  @Override
  public void setNextReader(AtomicReaderContext context) throws IOException {
    _collector.setNextReader(context);
  }

  @Override
  public boolean acceptsDocsOutOfOrder() {
    return _collector.acceptsDocsOutOfOrder();
  }

  public Collector getCollector() {
    return _collector;
  }

}