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;
  
  import org.apache.kafka.common.utils.Bytes;
  import org.apache.kafka.streams.kstream.Aggregator;
  import org.apache.kafka.streams.kstream.EmitStrategy;
  import org.apache.kafka.streams.kstream.Initializer;
  import org.apache.kafka.streams.kstream.KTable;
  import org.apache.kafka.streams.kstream.Materialized;
  import org.apache.kafka.streams.kstream.Merger;
  import org.apache.kafka.streams.kstream.Named;
  import org.apache.kafka.streams.kstream.SessionWindowedCogroupedKStream;
  import org.apache.kafka.streams.kstream.SessionWindows;
  import org.apache.kafka.streams.kstream.Windowed;
  import org.apache.kafka.streams.kstream.WindowedSerdes;
  import org.apache.kafka.streams.kstream.internals.graph.GraphNode;
  import org.apache.kafka.streams.state.SessionStore;
  
  import java.util.Map;
  import java.util.Objects;
  import java.util.Set;
  
  public class SessionWindowedCogroupedKStreamImpl<K, V> extends
      AbstractStream<K, V> implements SessionWindowedCogroupedKStream<K, V> {
  
      private final SessionWindows sessionWindows;
      private final CogroupedStreamAggregateBuilder<K, V> aggregateBuilder;
      private final Map<KGroupedStreamImpl<K, ?>, Aggregator<? super K, ? super Object, V>> groupPatterns;
  
      SessionWindowedCogroupedKStreamImpl(final SessionWindows sessionWindows,
                                          final InternalStreamsBuilder builder,
                                          final Set<String> subTopologySourceNodes,
                                          final String name,
                                          final CogroupedStreamAggregateBuilder<K, V> aggregateBuilder,
                                          final GraphNode graphNode,
                                          final Map<KGroupedStreamImpl<K, ?>, Aggregator<? super K, ? super Object, V>> groupPatterns) {
          super(name, null, null, subTopologySourceNodes, graphNode, builder);
          //keySerde and valueSerde are null because there are many different groupStreams that they could be from
          this.sessionWindows = sessionWindows;
          this.aggregateBuilder = aggregateBuilder;
          this.groupPatterns = groupPatterns;
      }
  
      @Override
      public KTable<Windowed<K>, V> aggregate(final Initializer<V> initializer,
                                              final Merger<? super K, V> sessionMerger) {
          return aggregate(initializer, sessionMerger, Materialized.with(null, null));
      }
  
      @Override
      public KTable<Windowed<K>, V> aggregate(final Initializer<V> initializer,
                                              final Merger<? super K, V> sessionMerger,
                                              final Materialized<K, V, SessionStore<Bytes, byte[]>> materialized) {
          return aggregate(initializer, sessionMerger, NamedInternal.empty(), materialized);
      }
  
      @Override
      public KTable<Windowed<K>, V> aggregate(final Initializer<V> initializer,
                                              final Merger<? super K, V> sessionMerger, final Named named) {
          return aggregate(initializer, sessionMerger, named, Materialized.with(null, null));
      }
  
      @Override
      public KTable<Windowed<K>, V> aggregate(final Initializer<V> initializer,
                                              final Merger<? super K, V> sessionMerger, final Named named,
                                              final Materialized<K, V, SessionStore<Bytes, byte[]>> materialized) {
          Objects.requireNonNull(initializer, "initializer can't be null");
          Objects.requireNonNull(sessionMerger, "sessionMerger can't be null");
          Objects.requireNonNull(materialized, "materialized can't be null");
          Objects.requireNonNull(named, "named can't be null");
          final MaterializedInternal<K, V, SessionStore<Bytes, byte[]>> materializedInternal = new MaterializedInternal<>(
              materialized,
              builder,
              CogroupedKStreamImpl.AGGREGATE_NAME);
          return aggregateBuilder.build(
              groupPatterns,
              initializer,
              new NamedInternal(named),
              new SessionStoreMaterializer<>(
                      materializedInternal,
                      sessionWindows,
                      EmitStrategy.onWindowUpdate()),
              materializedInternal.keySerde() != null ?
                  new WindowedSerdes.SessionWindowedSerde<>(
                      materializedInternal.keySerde()) :
                  null,
              materializedInternal.valueSerde(),
              materializedInternal.queryableStoreName(),
              sessionWindows,
              sessionMerger);
      }
  
  }
  