sryza commented on code in PR #51003: URL: https://github.com/apache/spark/pull/51003#discussion_r2110921173
########## sql/pipelines/src/main/scala/org/apache/spark/sql/pipelines/graph/Flow.scala: ########## @@ -0,0 +1,230 @@ +/* + * 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.spark.sql.pipelines.graph + +import scala.util.Try + +import org.apache.spark.internal.Logging +import org.apache.spark.sql.catalyst.{AliasIdentifier, TableIdentifier} +import org.apache.spark.sql.classic.DataFrame +import org.apache.spark.sql.pipelines.AnalysisWarning +import org.apache.spark.sql.pipelines.util.InputReadOptions +import org.apache.spark.sql.types.StructType + +/** + * A [[Flow]] is a node of data transformation in a dataflow graph. It describes the movement + * of data into a particular dataset. + */ +trait Flow extends GraphElement with Logging { + + /** The [[FlowFunction]] containing the user's query. */ + def func: FlowFunction + + val identifier: TableIdentifier + + /** + * The dataset that this Flow represents a write to. Since the DataflowGraph doesn't have a first- + * class concept of views, writing to a destination that isn't a Table or a Sink represents a + * view. + */ + val destinationIdentifier: TableIdentifier + + /** + * Whether this is a ONCE flow. ONCE flows should run only once per full refresh. + */ + def once: Boolean = false + + /** The current catalog in the execution context when the query is defined. */ + def currentCatalog: Option[String] + + /** The current database in the execution context when the query is defined. */ + def currentDatabase: Option[String] Review Comment: I think this is a good idea -- 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. To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: reviews-unsubscr...@spark.apache.org For additional commands, e-mail: reviews-h...@spark.apache.org
