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.beam.runners.flink.translation.wrappers.streaming;
  
  import java.util.Collections;
  import org.apache.beam.runners.core.KeyedWorkItem;
  import org.apache.beam.runners.core.TimerInternals;
  import org.apache.beam.sdk.values.WindowedValue;
  
  /** Singleton keyed word item. */
  public class SingletonKeyedWorkItem<K, ElemT> implements KeyedWorkItem<K, ElemT> {
  
    private final K key;
    private final WindowedValue<ElemT> value;
  
    public SingletonKeyedWorkItem(K key, WindowedValue<ElemT> value) {
      this.key = key;
      this.value = value;
    }
  
    @Override
    public K key() {
      return key;
    }
  
    public WindowedValue<ElemT> value() {
      return value;
    }
  
    @Override
    public Iterable<TimerInternals.TimerData> timersIterable() {
      return Collections.emptyList();
    }
  
    @Override
    public Iterable<WindowedValue<ElemT>> elementsIterable() {
      return Collections.singletonList(value);
    }
  
    @Override
    public String toString() {
      return String.format("{%s, [%s]}", key, value);
    }
  }
  