org.apache.flink.streaming.api.windowing.triggers.ContinuousEventTimeTrigger Maven / Gradle / Ivy
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* 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,
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* See the License for the specific language governing permissions and
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*/
package org.apache.flink.streaming.api.windowing.triggers;
import org.apache.flink.annotation.PublicEvolving;
import org.apache.flink.annotation.VisibleForTesting;
import org.apache.flink.api.common.functions.ReduceFunction;
import org.apache.flink.api.common.state.ReducingState;
import org.apache.flink.api.common.state.ReducingStateDescriptor;
import org.apache.flink.api.common.typeutils.base.LongSerializer;
import org.apache.flink.streaming.api.windowing.time.Time;
import org.apache.flink.streaming.api.windowing.windows.Window;
/**
* A {@link Trigger} that continuously fires based on a given time interval. This fires based
* on {@link org.apache.flink.streaming.api.watermark.Watermark Watermarks}.
*
* @see org.apache.flink.streaming.api.watermark.Watermark
*
* @param The type of {@link Window Windows} on which this trigger can operate.
*/
@PublicEvolving
public class ContinuousEventTimeTrigger extends Trigger