@@ -0,0 +1,3093 @@
+/*%0A * Licensed to the Apache Software Foundation (ASF) under one%0A * or more contributor license agreements.  See the NOTICE file%0A * distributed with this work for additional information%0A * regarding copyright ownership.  The ASF licenses this file%0A * to you under the Apache License, Version 2.0 (the%0A * %22License%22); you may not use this file except in compliance%0A * with the License.  You may obtain a copy of the License at%0A *%0A *     http://www.apache.org/licenses/LICENSE-2.0%0A *%0A * Unless required by applicable law or agreed to in writing, software%0A * distributed under the License is distributed on an %22AS IS%22 BASIS,%0A * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.%0A * See the License for the specific language governing permissions and%0A * limitations under the License.%0A */%0A%0Apackage org.apache.flink.table.types.logical.utils;%0A%0Aimport org.apache.flink.annotation.Internal;%0Aimport org.apache.flink.table.types.logical.LocalZonedTimestampType;%0Aimport org.apache.flink.table.types.logical.LogicalType;%0Aimport org.apache.flink.table.types.logical.LogicalTypeFamily;%0Aimport org.apache.flink.table.types.logical.LogicalTypeRoot;%0Aimport org.apache.flink.table.types.logical.TimestampKind;%0Aimport org.apache.flink.table.types.logical.TimestampType;%0Aimport org.apache.flink.table.types.logical.ZonedTimestampType;%0A%0A/**%0A * Utilities for checking %7B@link LogicalType%7D.%0A */%0A@Internal%0Apublic final class LogicalTypeChecks %7B%0A%0A%09private static final TimeAttributeChecker TIME_ATTRIBUTE_CHECKER = new TimeAttributeChecker();%0A%0A%09public static boolean hasRoot(LogicalType logicalType, LogicalTypeRoot typeRoot) %7B%0A%09%09return logicalType.getTypeRoot() == typeRoot;%0A%09%7D%0A%0A%09public static boolean hasFamily(LogicalType logicalType, LogicalTypeFamily family) %7B%0A%09%09return logicalType.getTypeRoot().getFamilies().contains(family);%0A%09%7D%0A%0A%09public static boolean isTimeAttribute(LogicalType logicalType) %7B%0A%09%09return logicalType.accept(TIME_ATTRIBUTE_CHECKER) != TimestampKind.REGULAR;%0A%09%7D%0A%0A%09public static boolean isRowtimeAttribute(LogicalType logicalType) %7B%0A%09%09return logicalType.accept(TIME_ATTRIBUTE_CHECKER) == TimestampKind.ROWTIME;%0A%09%7D%0A%0A%09public static boolean isProctimeAttribute(LogicalType logicalType) %7B%0A%09%09return logicalType.accept(TIME_ATTRIBUTE_CHECKER) == TimestampKind.PROCTIME;%0A%09%7D%0A%0A%09private LogicalTypeChecks() %7B%0A%09%09// no instantiation%0A%09%7D%0A%0A%09// --------------------------------------------------------------------------------------------%0A%0A%09private static class TimeAttributeChecker extends LogicalTypeDefaultVisitor%3CTimestampKind%3E %7B%0A%0A%09%09@Override%0A%09%09public TimestampKind visit(TimestampType timestampType) %7B%0A%09%09%09return timestampType.getKind();%0A%09%09%7D%0A%0A%09%09@Override%0A%09%09public TimestampKind visit(ZonedTimestampType zonedTimestampType) %7B%0A%09%09%09return zonedTimestampType.getKind();%0A%09%09%7D%0A%0A%09%09@Override%0A%09%09public TimestampKind visit(LocalZonedTimestampType localZonedTimestampType) %7B%0A%09%09%09return localZonedTimestampType.getKind();%0A%09%09%7D%0A%0A%09%09@Override%0A%09%09protected TimestampKind defaultMethod(LogicalType logicalType) %7B%0A%09%09%09// we don't verify that type is actually a timestamp%0A%09%09%09return TimestampKind.REGULAR;%0A%09%09%7D%0A%09%7D%0A%7D%0A

Add logical type check utilities