/*
 * Copyright 2018 Confluent Inc.
 *
 * Licensed under the Confluent Community License (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.confluent.io/confluent-community-license
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OF ANY KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations under the License.
 */

package io.confluent.ksql.parser.tree;

import io.confluent.ksql.GenericRow;
import io.confluent.ksql.function.UdafAggregator;
import java.util.Optional;
import org.apache.kafka.common.serialization.Serde;
import org.apache.kafka.streams.kstream.Initializer;
import org.apache.kafka.streams.kstream.KGroupedStream;
import org.apache.kafka.streams.kstream.KTable;
import org.apache.kafka.streams.kstream.Materialized;
import org.apache.kafka.streams.kstream.Windowed;

public abstract class KsqlWindowExpression extends Node {

  protected KsqlWindowExpression(final Optional<NodeLocation> location) {
    super(location);
  }

  public abstract KTable applyAggregate(KGroupedStream groupedStream,
                                        Initializer initializer,
                                        UdafAggregator aggregator,
                                        Materialized<String, GenericRow, ?> materialized);

  public abstract <K> Serde<Windowed<K>> getKeySerde(Class<K> innerType);
}
