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Support array sum aggregation function
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155 changes: 155 additions & 0 deletions
155
...apache/pinot/core/query/aggregation/function/array/SumArrayDoubleAggregationFunction.java
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| /** | ||
| * 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; | ||
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| import it.unimi.dsi.fastutil.doubles.DoubleArrayList; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| 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.BaseSingleInputAggregationFunction; | ||
| 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; | ||
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| public class SumArrayDoubleAggregationFunction | ||
| extends BaseSingleInputAggregationFunction<double[], DoubleArrayList> { | ||
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| public SumArrayDoubleAggregationFunction(List<ExpressionContext> arguments) { | ||
| super(verifySingleArgument(arguments, "SUM_ARRAY")); | ||
| } | ||
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| @Override | ||
| public AggregationFunctionType getType() { | ||
| return AggregationFunctionType.SUMARRAYDOUBLE; | ||
| } | ||
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| @Override | ||
| public AggregationResultHolder createAggregationResultHolder() { | ||
| return new ObjectAggregationResultHolder(); | ||
| } | ||
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| @Override | ||
| public GroupByResultHolder createGroupByResultHolder(int initialCapacity, int maxCapacity) { | ||
| return new ObjectGroupByResultHolder(initialCapacity, maxCapacity); | ||
| } | ||
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| @Override | ||
| public void aggregate(int length, AggregationResultHolder aggregationResultHolder, | ||
| Map<ExpressionContext, BlockValSet> blockValSetMap) { | ||
| double[][] values = blockValSetMap.get(_expression).getDoubleValuesMV(); | ||
| if (aggregationResultHolder.getResult() == null) { | ||
| aggregationResultHolder.setValue(new DoubleArrayList()); | ||
| } | ||
| DoubleArrayList result = aggregationResultHolder.getResult(); | ||
| for (int i = 0; i < length; i++) { | ||
| double[] value = values[i]; | ||
| aggregateMerge(value, result); | ||
| } | ||
| } | ||
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| @Override | ||
| public void aggregateGroupBySV(int length, int[] groupKeyArray, GroupByResultHolder groupByResultHolder, | ||
| Map<ExpressionContext, BlockValSet> blockValSetMap) { | ||
| double[][] valuesArray = blockValSetMap.get(_expression).getDoubleValuesMV(); | ||
| for (int i = 0; i < length; i++) { | ||
| double[] values = valuesArray[i]; | ||
| int groupKey = groupKeyArray[i]; | ||
| setGroupByResult(groupByResultHolder, values, groupKey); | ||
| } | ||
| } | ||
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| @Override | ||
| public void aggregateGroupByMV(int length, int[][] groupKeysArray, GroupByResultHolder groupByResultHolder, | ||
| Map<ExpressionContext, BlockValSet> blockValSetMap) { | ||
| double[][] valuesArray = blockValSetMap.get(_expression).getDoubleValuesMV(); | ||
| for (int i = 0; i < length; i++) { | ||
| double[] values = valuesArray[i]; | ||
| int[] groupKeys = groupKeysArray[i]; | ||
| for (int groupKey : groupKeys) { | ||
| setGroupByResult(groupByResultHolder, values, groupKey); | ||
| } | ||
| } | ||
| } | ||
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| private void setGroupByResult(GroupByResultHolder groupByResultHolder, double[] values, int groupKey) { | ||
| DoubleArrayList sumList = groupByResultHolder.getResult(groupKey); | ||
| if (sumList == null) { | ||
| sumList = new DoubleArrayList(); | ||
| groupByResultHolder.setValueForKey(groupKey, sumList); | ||
| } | ||
| aggregateMerge(values, sumList); | ||
| } | ||
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| private void aggregateMerge(double[] values, DoubleArrayList sumList) { | ||
| for (int j = sumList.size(); j < values.length; j++) { | ||
| sumList.add(0L); | ||
| } | ||
| for (int j = 0; j < values.length; j++) { | ||
| sumList.set(j, sumList.getDouble(j) + values[j]); | ||
| } | ||
| } | ||
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| @Override | ||
| public double[] extractAggregationResult(AggregationResultHolder aggregationResultHolder) { | ||
| return ((DoubleArrayList) aggregationResultHolder.getResult()).toDoubleArray(); | ||
| } | ||
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| @Override | ||
| public double[] extractGroupByResult(GroupByResultHolder groupByResultHolder, int groupKey) { | ||
| return ((DoubleArrayList) groupByResultHolder.getResult(groupKey)).toDoubleArray(); | ||
| } | ||
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| @Override | ||
| public double[] merge(double[] intermediateResult1, double[] intermediateResult2) { | ||
| if (intermediateResult1.length < intermediateResult2.length) { | ||
| for (int i = 0; i < intermediateResult1.length; i++) { | ||
| intermediateResult2[i] = intermediateResult1[i] + intermediateResult2[i]; | ||
| } | ||
| return intermediateResult2; | ||
| } | ||
| for (int i = 0; i < intermediateResult2.length; i++) { | ||
| intermediateResult1[i] = intermediateResult1[i] + intermediateResult2[i]; | ||
| } | ||
| return intermediateResult1; | ||
| } | ||
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| @Override | ||
| public DataSchema.ColumnDataType getIntermediateResultColumnType() { | ||
| return DataSchema.ColumnDataType.DOUBLE_ARRAY; | ||
| } | ||
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| @Override | ||
| public DataSchema.ColumnDataType getFinalResultColumnType() { | ||
| return DataSchema.ColumnDataType.DOUBLE_ARRAY; | ||
| } | ||
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| @Override | ||
| public DoubleArrayList extractFinalResult(double[] longs) { | ||
| DoubleArrayList result = new DoubleArrayList(longs.length); | ||
| for (double value : longs) { | ||
| result.add(value); | ||
| } | ||
| return result; | ||
| } | ||
| } |
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