yupeng9 commented on a change in pull request #7542: URL: https://github.com/apache/pinot/pull/7542#discussion_r724611951
########## File path: pinot-core/src/main/java/org/apache/pinot/core/operator/transform/function/InTransformFunction.java ########## @@ -0,0 +1,161 @@ +/** + * 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.pinot.core.operator.transform.function; + +import com.google.common.base.Preconditions; +import java.util.List; +import java.util.Map; +import org.apache.pinot.common.function.TransformFunctionType; +import org.apache.pinot.core.operator.blocks.ProjectionBlock; +import org.apache.pinot.core.operator.transform.TransformResultMetadata; +import org.apache.pinot.core.plan.DocIdSetPlanNode; +import org.apache.pinot.segment.spi.datasource.DataSource; +import org.apache.pinot.spi.data.FieldSpec; +import org.apache.pinot.spi.utils.ByteArray; + + +/** + * The IN transform function takes more than 1 arguments: + * <ul> + * <li>Expression: a single-value expression</li> + * <li>values: a set of literal strings</li> + * </ul> + * <p>For each docId, the function returns {@code 1} if the set of values contains the value of the expression, + * {code 0} if not. + * <p>E.g. {@code SELECT col IN ('a','b','c') FROM myTable)} + */ +public class InTransformFunction extends BaseTransformFunction { + private TransformFunction _transformFunction; + private TransformFunction[] _valueTransformFunctions; + private int[] _results; + + @Override + public String getName() { + return TransformFunctionType.IN.getName(); + } + + @Override + public void init(List<TransformFunction> arguments, Map<String, DataSource> dataSourceMap) { + Preconditions.checkArgument(arguments.size() >= 2, + "at least 2 arguments are required for IN transform function: expression, values"); + Preconditions.checkArgument(arguments.get(0).getResultMetadata().isSingleValue(), + "First argument for IN transform function must be a single-value expression"); Review comment: there's a `valueIn` function for this purpose -- 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] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
