JingsongLi commented on a change in pull request #8035: [FLINK-11975][table-planner-blink] Support to run a sql query : 'SELECT * FROM (VALUES (1, 2, 3)) T(a, b, c)' URL: https://github.com/apache/flink/pull/8035#discussion_r268476188
########## File path: flink-table/flink-table-planner-blink/src/main/scala/org/apache/flink/table/sinks/BaseUpsertStreamTableSink.scala ########## @@ -0,0 +1,64 @@ +/* + * 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.sinks + +import org.apache.flink.streaming.api.datastream.{DataStream, DataStreamSink} +import org.apache.flink.table.api.Table + +import java.lang.{Boolean => JBool} + +/** + * Defines an external [[TableSink]] to emit a streaming [[Table]] with insert, update, and delete + * changes. The [[Table]] must be have unique key fields (atomic or composite) or be append-only. + * + * If the [[Table]] does not have a unique key and is not append-only, a + * [[org.apache.flink.table.api.TableException]] will be thrown. + * + * The unique key of the table is configured by the [[BaseUpsertStreamTableSink#setKeyFields()]] + * method. + * + * If the table is append-only, all messages will have a true flag and must be interpreted + * as insertions. + * + * @tparam T Type of records that this [[TableSink]] expects and supports. + */ +trait BaseUpsertStreamTableSink[T] extends StreamTableSink[T] { Review comment: Modify it to java Interface? ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to 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
