hequn8128 commented on a change in pull request #6787: [FLINK-8577][table] Implement proctime DataStream to Table upsert conversion URL: https://github.com/apache/flink/pull/6787#discussion_r252105308
########## File path: flink-libraries/flink-table/src/main/scala/org/apache/flink/table/plan/nodes/logical/FlinkLogicalUpsertToRetraction.scala ########## @@ -0,0 +1,74 @@ +/* + * 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.logical + +import java.util.{List => JList} + +import org.apache.calcite.plan._ +import org.apache.calcite.rel.{RelNode, SingleRel} +import org.apache.calcite.rel.convert.ConverterRule +import org.apache.calcite.rel.metadata.RelMetadataQuery +import org.apache.flink.table.plan.logical.rel.LogicalUpsertToRetraction +import org.apache.flink.table.plan.nodes.FlinkConventions + +class FlinkLogicalUpsertToRetraction( Review comment: Hmm, maybe I think it is safe to use the default accept method since there is nothing in `FlinkLogicalUpsertToRetraction` need to be processed by a `RexShuttle`. However, if we throw an exception in it, there are some cases would not working. For example, a `RelShuttleImpl` may be used to process the whole plan and use `RexShuttle` to process RexNodes for a RelNode. What do you think? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
