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.graph;
  
  import org.apache.kafka.common.serialization.Serde;
  import org.apache.kafka.streams.kstream.internals.ConsumedInternal;
  
  import java.util.Collection;
  import java.util.Collections;
  import java.util.HashSet;
  import java.util.Optional;
  import java.util.Set;
  import java.util.regex.Pattern;
  
  public abstract class SourceGraphNode<K, V> extends GraphNode {
  
      private final Set<String> topicNames;
      private final Pattern topicPattern;
      private final ConsumedInternal<K, V> consumedInternal;
  
      public SourceGraphNode(final String nodeName,
                             final Collection<String> topicNames,
                             final ConsumedInternal<K, V> consumedInternal) {
          super(nodeName);
  
          this.topicNames = new HashSet<>(topicNames);
          this.topicPattern = null;
          this.consumedInternal = consumedInternal;
      }
  
      public SourceGraphNode(final String nodeName,
                             final Pattern topicPattern,
                             final ConsumedInternal<K, V> consumedInternal) {
  
          super(nodeName);
  
          this.topicNames = null;
          this.topicPattern = topicPattern;
          this.consumedInternal = consumedInternal;
      }
  
      public Optional<Set<String>> topicNames() {
          return topicNames == null ? Optional.empty() : Optional.of(Collections.unmodifiableSet(topicNames));
      }
  
      public Optional<Pattern> topicPattern() {
          return Optional.ofNullable(topicPattern);
      }
  
      public ConsumedInternal<K, V> consumedInternal() {
          return consumedInternal;
      }
  
      public Serde<K> keySerde() {
          return consumedInternal.keySerde();
      }
  
      public Serde<V> valueSerde() {
          return consumedInternal.valueSerde();
      }
  
  }
  