content: /*
   * 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.
   */
  package org.apache.beam.sdk.nexmark.queries;
  
  import java.io.Serializable;
  import java.util.Collection;
  import java.util.Iterator;
  import org.apache.beam.sdk.nexmark.NexmarkConfiguration;
  import org.apache.beam.sdk.nexmark.NexmarkUtils;
  import org.apache.beam.sdk.nexmark.model.Bid;
  import org.apache.beam.sdk.nexmark.model.Event;
  import org.apache.beam.sdk.values.TimestampedValue;
  
  /** A direct implementation of {@link Query1}. */
  public class Query1Model extends NexmarkQueryModel<Bid> implements Serializable {
    /** Simulator for query 1. */
    private static class Simulator extends AbstractSimulator<Event, Bid> {
      public Simulator(NexmarkConfiguration configuration) {
        super(NexmarkUtils.standardEventIterator(configuration));
      }
  
      @Override
      protected void run() {
        TimestampedValue<Event> timestampedEvent = nextInput();
        if (timestampedEvent == null) {
          allDone();
          return;
        }
        Event event = timestampedEvent.getValue();
        if (event.bid == null) {
          // Ignore non-bid events.
          return;
        }
        Bid bid = event.bid;
        Bid resultBid =
            new Bid(bid.auction, bid.bidder, bid.price * 89 / 100, bid.dateTime, bid.extra);
        TimestampedValue<Bid> result =
            TimestampedValue.of(resultBid, timestampedEvent.getTimestamp());
        addResult(result);
      }
    }
  
    public Query1Model(NexmarkConfiguration configuration) {
      super(configuration);
    }
  
    @Override
    public AbstractSimulator<?, Bid> simulator() {
      return new Simulator(configuration);
    }
  
    @Override
    protected Collection<String> toCollection(Iterator<TimestampedValue<Bid>> itr) {
      return toValueTimestamp(itr);
    }
  }
  