/*
* 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.util.WindowedValue;
/**
* Singleton keyed word item.
*/
public class SingletonKeyedWorkItem<K, ElemT> implements KeyedWorkItem<K, ElemT> {
final K key;
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.EMPTY_LIST;
}
@Override
public Iterable<WindowedValue<ElemT>> elementsIterable() {
return Collections.singletonList(value);
}
}