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.processor.internals;
  
  import org.apache.kafka.streams.processor.RecordContext;
  import org.apache.kafka.streams.processor.TopicNameExtractor;
  
  import java.util.Objects;
  
  /**
   * Static topic name extractor
   */
  public class StaticTopicNameExtractor<K, V> implements TopicNameExtractor<K, V> {
  
      public final String topicName;
  
      public StaticTopicNameExtractor(final String topic) {
          Objects.requireNonNull(topic, "topic cannot be null");
          this.topicName = topic;
      }
  
      public String extract(final K key, final V value, final RecordContext recordContext) {
          return topicName;
      }
  
      @Override
      public String toString() {
          return "StaticTopicNameExtractor(" + topicName + ")";
      }
  
      @Override
      public boolean equals(final Object o) {
          if (this == o) {
              return true;
          }
          if (o == null || getClass() != o.getClass()) {
              return false;
          }
          final StaticTopicNameExtractor<?, ?> that = (StaticTopicNameExtractor<?, ?>) o;
          return Objects.equals(topicName, that.topicName);
      }
  
      @Override
      public int hashCode() {
          return Objects.hash(topicName);
      }
  }
  