twalthr commented on a change in pull request #8335: [FLINK-12253][table-common] Setup a class hierarchy for the new logical type system URL: https://github.com/apache/flink/pull/8335#discussion_r281087051
########## File path: flink-table/flink-table-common/src/main/java/org/apache/flink/table/types/logical/YearMonthIntervalType.java ########## @@ -0,0 +1,191 @@ +/* + * 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.types.logical; + +import org.apache.flink.annotation.PublicEvolving; +import org.apache.flink.table.api.ValidationException; +import org.apache.flink.util.Preconditions; + +import java.util.Collections; +import java.util.List; +import java.util.Objects; +import java.util.Set; + +/** + * Logical type for a group of year-month interval types. The type must be parameterized to one of + * the following resolutions: interval of years, interval of years to months, or interval of months. + * + * <p>An interval of year-month consists of {@code +years-months} with values ranging from {@code -9999-11} + * to {@code +9999-11}. The value is the same for all resolutions of this group (for example, an Review comment: How about? ``` An interval of year-month consists of {@code +years-months} with values ranging from {@code -9999-11} * to {@code +9999-11}. A value representation is looks the same for all resolutions. For example, an * interval of months of 50 is always represented in an interval of year to month format: {@code +04-02}. ``` ---------------------------------------------------------------- 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
