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.runners.dataflow.util;
  
  import static org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkNotNull;
  
  import com.google.api.client.json.GenericJson;
  import com.google.api.client.util.Key;
  import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
  import java.util.Objects;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  /**
   * A representation used by {@link com.google.api.services.dataflow.model.Step}s to reference the
   * output of other {@code Step}s.
   */
  public final class OutputReference extends GenericJson {
    @Key("@type")
    @SuppressFBWarnings("SS_SHOULD_BE_STATIC") // read via reflection so must be Field just like this
    public final String type = "OutputReference";
  
    @Key("step_name")
    private final String stepName;
  
    @Key("output_name")
    private final String outputName;
  
    public OutputReference(String stepName, String outputName) {
      this.stepName = checkNotNull(stepName);
      this.outputName = checkNotNull(outputName);
    }
  
    @Override
    public boolean equals(@Nullable Object otherObject) {
      if (!(otherObject instanceof OutputReference)) {
        return false;
      }
      OutputReference other = (OutputReference) otherObject;
      return Objects.equals(type, other.type)
          && Objects.equals(stepName, other.stepName)
          && Objects.equals(outputName, other.outputName)
          && super.equals(other);
    }
  
    @Override
    public int hashCode() {
      return Objects.hash(type, stepName, outputName, super.hashCode());
    }
  }
  