xiangfu0 commented on code in PR #13146: URL: https://github.com/apache/pinot/pull/13146#discussion_r1607570719
########## pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/array/ListAggFunction.java: ########## @@ -0,0 +1,176 @@ +/** + * 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.query.aggregation.function.array; + +import it.unimi.dsi.fastutil.objects.ObjectArrayList; +import it.unimi.dsi.fastutil.objects.ObjectOpenHashSet; +import java.util.Map; +import org.apache.commons.lang3.StringUtils; +import org.apache.pinot.common.request.context.ExpressionContext; +import org.apache.pinot.common.utils.DataSchema; +import org.apache.pinot.core.common.BlockValSet; +import org.apache.pinot.core.query.aggregation.AggregationResultHolder; +import org.apache.pinot.core.query.aggregation.ObjectAggregationResultHolder; +import org.apache.pinot.core.query.aggregation.function.NullableSingleInputAggregationFunction; +import org.apache.pinot.core.query.aggregation.groupby.GroupByResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.ObjectGroupByResultHolder; +import org.apache.pinot.segment.spi.AggregationFunctionType; + + +public class ListAggFunction + extends NullableSingleInputAggregationFunction<ObjectArrayList<String>, String> { + + private final String _separator; + private final boolean _isDistinct; + + public ListAggFunction(ExpressionContext expression, String separator, boolean isDistinct, + boolean nullHandlingEnabled) { + super(expression, nullHandlingEnabled); + _separator = separator; + _isDistinct = isDistinct; + } + + @Override + public AggregationFunctionType getType() { + return AggregationFunctionType.LISTAGG; + } + + @Override + public AggregationResultHolder createAggregationResultHolder() { + return new ObjectAggregationResultHolder(); + } + + @Override + public GroupByResultHolder createGroupByResultHolder(int initialCapacity, int maxCapacity) { + return new ObjectGroupByResultHolder(initialCapacity, maxCapacity); + } + + @Override + public void aggregate(int length, AggregationResultHolder aggregationResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + ObjectArrayList<String> valueSet = getObjectArrayList(aggregationResultHolder); + BlockValSet blockValSet = blockValSetMap.get(_expression); + String[] values = blockValSet.getStringValuesSV(); + forEachNotNull(length, blockValSet, (from, to) -> { + ObjectOpenHashSet<String> distinctValueSet = new ObjectOpenHashSet<>(); Review Comment: Moved to another class to handle distinct -- 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]
