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.kafka.streams.kstream.internals.foreignkeyjoin;
  
  import java.util.Objects;
  
  public class CombinedKey<KRight, KLeft> {
      private final KRight foreignKey;
      private final KLeft primaryKey;
  
      CombinedKey(final KRight foreignKey, final KLeft primaryKey) {
          Objects.requireNonNull(primaryKey, "primaryKey can't be null");
          this.foreignKey = foreignKey;
          this.primaryKey = primaryKey;
      }
  
      public KRight foreignKey() {
          return foreignKey;
      }
  
      public KLeft primaryKey() {
          return primaryKey;
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(foreignKey, primaryKey);
      }
  
      @Override
      public boolean equals(final Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
          final CombinedKey<?, ?> that = (CombinedKey<?, ?>) o;
          return Objects.equals(foreignKey, that.foreignKey) && Objects.equals(
              primaryKey, that.primaryKey);
      }
  
      @Override
      public String toString() {
          return "CombinedKey{" +
                  "foreignKey=" + foreignKey +
                  ", primaryKey=" + primaryKey +
                  '}';
      }
  }
  