rdblue commented on a change in pull request #1893: URL: https://github.com/apache/iceberg/pull/1893#discussion_r546048747
########## File path: flink/src/main/java/org/apache/iceberg/flink/FlinkFilters.java ########## @@ -0,0 +1,183 @@ +/* + * 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.iceberg.flink; + +import java.util.List; +import java.util.Map; +import java.util.Optional; +import java.util.function.BiFunction; +import java.util.stream.Collectors; +import org.apache.flink.table.expressions.CallExpression; +import org.apache.flink.table.expressions.FieldReferenceExpression; +import org.apache.flink.table.expressions.ResolvedExpression; +import org.apache.flink.table.expressions.ValueLiteralExpression; +import org.apache.flink.table.functions.BuiltInFunctionDefinition; +import org.apache.flink.table.functions.BuiltInFunctionDefinitions; +import org.apache.iceberg.expressions.Expression; +import org.apache.iceberg.expressions.Expression.Operation; +import org.apache.iceberg.expressions.Expressions; +import org.apache.iceberg.relocated.com.google.common.base.Preconditions; +import org.apache.iceberg.relocated.com.google.common.collect.ImmutableMap; +import org.apache.iceberg.util.NaNUtil; + +public class FlinkFilters { Review comment: This class needs an extensive test suite that checks the conversion from expected Flink expressions, not just a test for the source. The conversion needs to cover at least these cases: * Equals with null * Not equals with null * In with null * Not in with null * Equals with NaN * Not equals with NaN * In with NaN * Not in with NaN * All inequalities with null * All inequalities with NaN * All expressions with a non-null and non-Nan value (preferably one string and one numeric) * Each data type that is supposed by Iceberg/Flink ---------------------------------------------------------------- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
