| /* |
| * 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.runtime.join.batch; |
| |
| import org.apache.flink.table.dataformat.BinaryRow; |
| |
| import org.apache.commons.lang3.ArrayUtils; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import static org.apache.flink.util.Preconditions.checkArgument; |
| |
| /** |
| * Helper for null aware join. |
| */ |
| public class NullAwareJoinHelper { |
| |
| public static int[] getNullFilterKeys(boolean[] filterNulls) { |
| checkArgument(filterNulls.length > 0); |
| List<Integer> nullFilterKeyList = new ArrayList<>(); |
| for (int i = 0; i < filterNulls.length; i++) { |
| if (filterNulls[i]) { |
| nullFilterKeyList.add(i); |
| } |
| } |
| return ArrayUtils.toPrimitive(nullFilterKeyList.toArray(new Integer[0])); |
| } |
| |
| public static boolean shouldFilter( |
| boolean nullSafe, boolean filterAllNulls, |
| int[] nullFilterKeys, BinaryRow key) { |
| return !nullSafe && (filterAllNulls ? key.anyNull() : key.anyNull(nullFilterKeys)); |
| } |
| } |
