jzhuge commented on code in PR #37556: URL: https://github.com/apache/spark/pull/37556#discussion_r1028346195
########## sql/catalyst/src/main/java/org/apache/spark/sql/connector/catalog/View.java: ########## @@ -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.spark.sql.connector.catalog; + +import java.util.Map; + +import org.apache.spark.annotation.DeveloperApi; +import org.apache.spark.sql.types.StructType; + +/** + * An interface representing a persisted view. + */ +@DeveloperApi +public interface View { + /** + * A name to identify this view. + */ + String name(); + + /** + * The view query SQL text. + */ + String query(); + + /** + * The current catalog when the view is created. + */ + String currentCatalog(); + + /** + * The current namespace when the view is created. + */ + String[] currentNamespace(); + + /** + * The schema for the view when the view is created after applying column aliases. + */ + StructType schema(); + + /** + * The output column names of the query that creates this view. + */ + String[] queryColumnNames(); + + /** + * The view column aliases. + */ + String[] columnAliases(); + + /** + * The view column comments. + */ + String[] columnComments(); + + /** + * The view properties. Review Comment: Thanks for the feedback! The goal is to capture the entire CREATE VIEW syntax in API. Leave the choice to catalog plugin developers on whether to use properties to implement the APIs. I'd expect HMS-backed view catalog implementation will continue to do so the same as the current v1 implementation. On the other hand, view catalog plugins that support more free-form storage formats such as JSON can choose a different approach. -- 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
