org.apache.flink.table.planner.plan.logical.WindowSpec 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
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package org.apache.flink.table.planner.plan.logical;
import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.annotation.JsonSubTypes;
import org.apache.flink.shaded.jackson2.com.fasterxml.jackson.annotation.JsonTypeInfo;
/** Logical representation of a window specification. */
@JsonTypeInfo(use = JsonTypeInfo.Id.NAME, include = JsonTypeInfo.As.PROPERTY, property = "type")
@JsonSubTypes({
@JsonSubTypes.Type(value = TumblingWindowSpec.class),
@JsonSubTypes.Type(value = HoppingWindowSpec.class),
@JsonSubTypes.Type(value = CumulativeWindowSpec.class)
})
public interface WindowSpec {
String toSummaryString(String windowing);
}