/*
 * 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.flink.streaming.api.functions.windowing;

import org.apache.flink.annotation.PublicEvolving;
import org.apache.flink.streaming.api.windowing.windows.Window;

/**
 * Base rich abstract class for functions that are evaluated over keyed (grouped) windows using a
 * context for passing extra information.
 *
 * @param <IN> The type of the input value.
 * @param <OUT> The type of the output value.
 * @param <KEY> The type of the key.
 * @param <W> The type of {@code Window} that this window function can be applied on.
 * @deprecated use {@link ProcessWindowFunction} instead
 */
@PublicEvolving
@Deprecated
public abstract class RichProcessWindowFunction<IN, OUT, KEY, W extends Window>
        extends ProcessWindowFunction<IN, OUT, KEY, W> {

    private static final long serialVersionUID = 1L;
}
