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 org.apache.beam.sdk.nexmark.NexmarkConfiguration;
  import org.apache.beam.sdk.nexmark.model.AuctionBid;
  import org.apache.beam.sdk.nexmark.model.Event;
  import org.apache.beam.sdk.transforms.Filter;
  import org.apache.beam.sdk.values.PCollection;
  
  /**
   * Query "9", 'Winning bids'. Select just the winning bids. Not in original NEXMark suite, but handy
   * for testing. See {@link WinningBids} for the details.
   */
  @SuppressWarnings({
    "nullness" // TODO(https://github.com/apache/beam/issues/20497)
  })
  public class Query9 extends NexmarkQueryTransform<AuctionBid> {
    private final NexmarkConfiguration configuration;
  
    public Query9(NexmarkConfiguration configuration) {
      super("Query9");
      this.configuration = configuration;
    }
  
    @Override
    public PCollection<AuctionBid> expand(PCollection<Event> events) {
      return events.apply(Filter.by(new AuctionOrBid())).apply(new WinningBids(name, configuration));
    }
  }
  