org.apache.flink.streaming.api.windowing.assigners.BaseAlignedWindowAssigner Maven / Gradle / Ivy
/*
* 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.windowing.assigners;
import org.apache.flink.api.common.ExecutionConfig;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment;
import org.apache.flink.streaming.api.windowing.triggers.Trigger;
import org.apache.flink.streaming.api.windowing.windows.TimeWindow;
import java.util.Collection;
/**
* A base {@link WindowAssigner} used to instantiate one of the deprecated
* {@link org.apache.flink.streaming.runtime.operators.windowing.AccumulatingProcessingTimeWindowOperator
* AccumulatingProcessingTimeWindowOperator} and
* {@link org.apache.flink.streaming.runtime.operators.windowing.AggregatingProcessingTimeWindowOperator
* AggregatingProcessingTimeWindowOperator}.
*
* For assigner that extend this one, the user can check the
* {@link TumblingAlignedProcessingTimeWindows} and the {@link SlidingAlignedProcessingTimeWindows}.
* */
public class BaseAlignedWindowAssigner extends WindowAssigner {
private static final long serialVersionUID = -6214980179706960234L;
private final long size;
protected BaseAlignedWindowAssigner(long size) {
this.size = size;
}
public long getSize() {
return size;
}
@Override
public Collection assignWindows(Object element, long timestamp, WindowAssignerContext context) {
throw new UnsupportedOperationException("This assigner should not be used with the WindowOperator.");
}
@Override
public Trigger getDefaultTrigger(StreamExecutionEnvironment env) {
return null;
}
@Override
public TypeSerializer getWindowSerializer(ExecutionConfig executionConfig) {
throw new UnsupportedOperationException("This assigner should not be used with the WindowOperator.");
}
@Override
public boolean isEventTime() {
throw new UnsupportedOperationException("This assigner should not be used with the WindowOperator.");
}
}