ygerzhedovich commented on a change in pull request #721: URL: https://github.com/apache/ignite-3/pull/721#discussion_r826057436
########## File path: modules/schema/src/main/java/org/apache/ignite/internal/util/ColocationUtils.java ########## @@ -0,0 +1,126 @@ +/* + * 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.ignite.internal.util; + +import java.math.BigDecimal; +import java.math.BigInteger; +import java.time.Instant; +import java.time.LocalDate; +import java.time.LocalDateTime; +import java.time.LocalTime; +import java.util.BitSet; +import java.util.UUID; +import org.apache.ignite.internal.schema.Column; +import org.apache.ignite.internal.schema.NativeTypeSpec; +import org.apache.ignite.internal.schema.row.Row; + +/** + * Colocation hash utilities. + */ +public class ColocationUtils { + /** + * Disallow to construct instance. + */ + private ColocationUtils() { + // No-op. + } + + /** + * Calculate colocation hash of the specified row. + * + * @param r Row to calculate row's colocation hash. + * @return Row's colocation hash. + */ + public static int colocationHash(Row r) { + HashCalculator hashCalc = new HashCalculator(); + + for (Column c : r.schema().colocationColumns()) { + append(hashCalc, r.value(c.schemaIndex()), c.type().spec()); + } + + return hashCalc.hash(); + } + + + /** + * Append value to the hash calculation. + * + * @param calc Hash calculator. + * @param v Value to update hash. + * @param typeSpec Value type. + */ + public static void append(HashCalculator calc, Object v, NativeTypeSpec typeSpec) { + if (v == null) { Review comment: the same case alreay implemented inside HashCalculator -- 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: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
