forked from apache/flink
-
Notifications
You must be signed in to change notification settings - Fork 1
/
LogicalWatermarkAssigner.scala
43 lines (37 loc) · 1.58 KB
/
LogicalWatermarkAssigner.scala
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
/*
* 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.table.plan.nodes.calcite
import org.apache.calcite.plan._
import org.apache.calcite.rel.RelNode
import java.util
/**
* Sub-class of [[WatermarkAssigner]] that is a relational operator
* which generates [[org.apache.flink.streaming.api.watermark.Watermark]].
* This class corresponds to Calcite logical rel.
*/
final class LogicalWatermarkAssigner(
cluster: RelOptCluster,
traits: RelTraitSet,
input: RelNode,
rowtimeFieldIndex: Option[Int],
watermarkDelay: Option[Long])
extends WatermarkAssigner(cluster, traits, input, rowtimeFieldIndex, watermarkDelay) {
override def copy(traitSet: RelTraitSet, inputs: util.List[RelNode]): RelNode = {
new LogicalWatermarkAssigner(cluster, traits, inputs.get(0), rowtimeFieldIndex, watermarkDelay)
}
}