pan3793 commented on code in PR #50541: URL: https://github.com/apache/spark/pull/50541#discussion_r2034508270
########## sql/catalyst/src/main/java/org/apache/spark/sql/connector/catalog/DefaultValue.java: ########## @@ -0,0 +1,95 @@ +/* + * 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 java.util.Objects; +import javax.annotation.Nullable; + +import org.apache.spark.SparkIllegalArgumentException; +import org.apache.spark.annotation.Evolving; +import org.apache.spark.sql.connector.expressions.Expression; + +/** + * A class that represents default values. + * <p> + * Connectors can define default values using either a SQL string (Spark SQL dialect) or an + * {@link Expression expression} if the default value can be expressed as a supported connector + * expression. If both the SQL string and the expression are provided, Spark first attempts to + * convert the given expression to its internal representation. If the expression cannot be + * converted, and a SQL string is provided, Spark will fall back to parsing the SQL string. + * + * @since 4.1.0 Review Comment: might be since 4.0.0 -- 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
