Jackie-Jiang commented on a change in pull request #5744: URL: https://github.com/apache/incubator-pinot/pull/5744#discussion_r462487384
########## File path: pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/StUnionAggregationFunction.java ########## @@ -0,0 +1,137 @@ +/** + * 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; + +import java.util.Map; +import org.apache.pinot.common.function.AggregationFunctionType; +import org.apache.pinot.common.utils.DataSchema; +import org.apache.pinot.core.common.BlockValSet; +import org.apache.pinot.core.geospatial.serde.GeometrySerializer; +import org.apache.pinot.core.query.aggregation.AggregationResultHolder; +import org.apache.pinot.core.query.aggregation.ObjectAggregationResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.GroupByResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.ObjectGroupByResultHolder; +import org.apache.pinot.core.query.request.context.ExpressionContext; +import org.apache.pinot.spi.utils.ByteArray; +import org.locationtech.jts.geom.Geometry; + + +public class StUnionAggregationFunction extends BaseSingleInputAggregationFunction<Geometry, ByteArray> { + + /** + * Constructor for the class. + * + * @param expression Expression to aggregate on. + */ + public StUnionAggregationFunction(ExpressionContext expression) { + super(expression); + } + + @Override + public AggregationFunctionType getType() { + return AggregationFunctionType.ST_UNION; + } + + @Override + public void accept(AggregationFunctionVisitorBase visitor) { + visitor.visit(this); + } + + @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) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + Geometry geometry = aggregationResultHolder.getResult(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + geometry = geometry == null ? value : geometry.union(value); + } + aggregationResultHolder.setValue(geometry); + } + + @Override + public void aggregateGroupBySV(int length, int[] groupKeyArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + int groupKey = groupKeyArray[i]; + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + + @Override + public void aggregateGroupByMV(int length, int[][] groupKeysArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + for (int groupKey : groupKeysArray[i]) { + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + } + + @Override + public Geometry extractAggregationResult(AggregationResultHolder aggregationResultHolder) { + return aggregationResultHolder.getResult(); + } + + @Override + public Geometry extractGroupByResult(GroupByResultHolder groupByResultHolder, int groupKey) { + return groupByResultHolder.getResult(groupKey); + } + + @Override + public Geometry merge(Geometry intermediateResult1, Geometry intermediateResult2) { + return intermediateResult1.union(intermediateResult2); + } + + @Override + public boolean isIntermediateResultComparable() { + return true; Review comment: This is not the same comparison logic as the final result, so we should put `false` here. This is for ordering the union geometry for group-by queries, which will use the final result `ByteArray` order. It does not make a lot of sense to order them though ########## File path: pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/StUnionAggregationFunction.java ########## @@ -0,0 +1,137 @@ +/** + * 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; + +import java.util.Map; +import org.apache.pinot.common.function.AggregationFunctionType; +import org.apache.pinot.common.utils.DataSchema; +import org.apache.pinot.core.common.BlockValSet; +import org.apache.pinot.core.geospatial.serde.GeometrySerializer; +import org.apache.pinot.core.query.aggregation.AggregationResultHolder; +import org.apache.pinot.core.query.aggregation.ObjectAggregationResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.GroupByResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.ObjectGroupByResultHolder; +import org.apache.pinot.core.query.request.context.ExpressionContext; +import org.apache.pinot.spi.utils.ByteArray; +import org.locationtech.jts.geom.Geometry; + + +public class StUnionAggregationFunction extends BaseSingleInputAggregationFunction<Geometry, ByteArray> { + + /** + * Constructor for the class. + * + * @param expression Expression to aggregate on. + */ + public StUnionAggregationFunction(ExpressionContext expression) { + super(expression); + } + + @Override + public AggregationFunctionType getType() { + return AggregationFunctionType.ST_UNION; + } + + @Override + public void accept(AggregationFunctionVisitorBase visitor) { + visitor.visit(this); + } + + @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) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + Geometry geometry = aggregationResultHolder.getResult(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + geometry = geometry == null ? value : geometry.union(value); + } + aggregationResultHolder.setValue(geometry); + } + + @Override + public void aggregateGroupBySV(int length, int[] groupKeyArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + int groupKey = groupKeyArray[i]; + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + + @Override + public void aggregateGroupByMV(int length, int[][] groupKeysArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + for (int groupKey : groupKeysArray[i]) { + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + } + + @Override + public Geometry extractAggregationResult(AggregationResultHolder aggregationResultHolder) { + return aggregationResultHolder.getResult(); Review comment: It won't work because `DataTable` does not support `null` as input (for sending back response from server to broker) ########## File path: pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/StUnionAggregationFunction.java ########## @@ -0,0 +1,137 @@ +/** + * 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; + +import java.util.Map; +import org.apache.pinot.common.function.AggregationFunctionType; +import org.apache.pinot.common.utils.DataSchema; +import org.apache.pinot.core.common.BlockValSet; +import org.apache.pinot.core.geospatial.serde.GeometrySerializer; +import org.apache.pinot.core.query.aggregation.AggregationResultHolder; +import org.apache.pinot.core.query.aggregation.ObjectAggregationResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.GroupByResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.ObjectGroupByResultHolder; +import org.apache.pinot.core.query.request.context.ExpressionContext; +import org.apache.pinot.spi.utils.ByteArray; +import org.locationtech.jts.geom.Geometry; + + +public class StUnionAggregationFunction extends BaseSingleInputAggregationFunction<Geometry, ByteArray> { + + /** + * Constructor for the class. + * + * @param expression Expression to aggregate on. + */ + public StUnionAggregationFunction(ExpressionContext expression) { + super(expression); + } + + @Override + public AggregationFunctionType getType() { + return AggregationFunctionType.ST_UNION; + } + + @Override + public void accept(AggregationFunctionVisitorBase visitor) { + visitor.visit(this); + } + + @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) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + Geometry geometry = aggregationResultHolder.getResult(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + geometry = geometry == null ? value : geometry.union(value); + } + aggregationResultHolder.setValue(geometry); + } + + @Override + public void aggregateGroupBySV(int length, int[] groupKeyArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + int groupKey = groupKeyArray[i]; + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + + @Override + public void aggregateGroupByMV(int length, int[][] groupKeysArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + for (int groupKey : groupKeysArray[i]) { + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + } + + @Override + public Geometry extractAggregationResult(AggregationResultHolder aggregationResultHolder) { + return aggregationResultHolder.getResult(); + } + + @Override + public Geometry extractGroupByResult(GroupByResultHolder groupByResultHolder, int groupKey) { + return groupByResultHolder.getResult(groupKey); Review comment: SELECT ... WHERE col = "no_match_ value" ########## File path: pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/StUnionAggregationFunction.java ########## @@ -0,0 +1,137 @@ +/** + * 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; + +import java.util.Map; +import org.apache.pinot.common.function.AggregationFunctionType; +import org.apache.pinot.common.utils.DataSchema; +import org.apache.pinot.core.common.BlockValSet; +import org.apache.pinot.core.geospatial.serde.GeometrySerializer; +import org.apache.pinot.core.query.aggregation.AggregationResultHolder; +import org.apache.pinot.core.query.aggregation.ObjectAggregationResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.GroupByResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.ObjectGroupByResultHolder; +import org.apache.pinot.core.query.request.context.ExpressionContext; +import org.apache.pinot.spi.utils.ByteArray; +import org.locationtech.jts.geom.Geometry; + + +public class StUnionAggregationFunction extends BaseSingleInputAggregationFunction<Geometry, ByteArray> { + + /** + * Constructor for the class. + * + * @param expression Expression to aggregate on. + */ + public StUnionAggregationFunction(ExpressionContext expression) { + super(expression); + } + + @Override + public AggregationFunctionType getType() { + return AggregationFunctionType.ST_UNION; + } + + @Override + public void accept(AggregationFunctionVisitorBase visitor) { + visitor.visit(this); + } + + @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) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + Geometry geometry = aggregationResultHolder.getResult(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + geometry = geometry == null ? value : geometry.union(value); + } + aggregationResultHolder.setValue(geometry); + } + + @Override + public void aggregateGroupBySV(int length, int[] groupKeyArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + int groupKey = groupKeyArray[i]; + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + + @Override + public void aggregateGroupByMV(int length, int[][] groupKeysArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + for (int groupKey : groupKeysArray[i]) { + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + } + + @Override + public Geometry extractAggregationResult(AggregationResultHolder aggregationResultHolder) { + return aggregationResultHolder.getResult(); + } + + @Override + public Geometry extractGroupByResult(GroupByResultHolder groupByResultHolder, int groupKey) { + return groupByResultHolder.getResult(groupKey); Review comment: `SELECT ... WHERE col = "no_match_value"` ########## File path: pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/StUnionAggregationFunction.java ########## @@ -0,0 +1,137 @@ +/** + * 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; + +import java.util.Map; +import org.apache.pinot.common.function.AggregationFunctionType; +import org.apache.pinot.common.utils.DataSchema; +import org.apache.pinot.core.common.BlockValSet; +import org.apache.pinot.core.geospatial.serde.GeometrySerializer; +import org.apache.pinot.core.query.aggregation.AggregationResultHolder; +import org.apache.pinot.core.query.aggregation.ObjectAggregationResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.GroupByResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.ObjectGroupByResultHolder; +import org.apache.pinot.core.query.request.context.ExpressionContext; +import org.apache.pinot.spi.utils.ByteArray; +import org.locationtech.jts.geom.Geometry; + + +public class StUnionAggregationFunction extends BaseSingleInputAggregationFunction<Geometry, ByteArray> { + + /** + * Constructor for the class. + * + * @param expression Expression to aggregate on. + */ + public StUnionAggregationFunction(ExpressionContext expression) { + super(expression); + } + + @Override + public AggregationFunctionType getType() { + return AggregationFunctionType.ST_UNION; + } + + @Override + public void accept(AggregationFunctionVisitorBase visitor) { + visitor.visit(this); + } + + @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) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + Geometry geometry = aggregationResultHolder.getResult(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + geometry = geometry == null ? value : geometry.union(value); + } + aggregationResultHolder.setValue(geometry); + } + + @Override + public void aggregateGroupBySV(int length, int[] groupKeyArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + int groupKey = groupKeyArray[i]; + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + + @Override + public void aggregateGroupByMV(int length, int[][] groupKeysArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + for (int groupKey : groupKeysArray[i]) { + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + } + + @Override + public Geometry extractAggregationResult(AggregationResultHolder aggregationResultHolder) { + return aggregationResultHolder.getResult(); + } + + @Override + public Geometry extractGroupByResult(GroupByResultHolder groupByResultHolder, int groupKey) { + return groupByResultHolder.getResult(groupKey); + } + + @Override + public Geometry merge(Geometry intermediateResult1, Geometry intermediateResult2) { + return intermediateResult1.union(intermediateResult2); + } + + @Override + public boolean isIntermediateResultComparable() { + return true; Review comment: Yes, because they are for the same purpose ########## File path: pinot-core/src/main/java/org/apache/pinot/core/query/aggregation/function/StUnionAggregationFunction.java ########## @@ -0,0 +1,137 @@ +/** + * 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; + +import java.util.Map; +import org.apache.pinot.common.function.AggregationFunctionType; +import org.apache.pinot.common.utils.DataSchema; +import org.apache.pinot.core.common.BlockValSet; +import org.apache.pinot.core.geospatial.serde.GeometrySerializer; +import org.apache.pinot.core.query.aggregation.AggregationResultHolder; +import org.apache.pinot.core.query.aggregation.ObjectAggregationResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.GroupByResultHolder; +import org.apache.pinot.core.query.aggregation.groupby.ObjectGroupByResultHolder; +import org.apache.pinot.core.query.request.context.ExpressionContext; +import org.apache.pinot.spi.utils.ByteArray; +import org.locationtech.jts.geom.Geometry; + + +public class StUnionAggregationFunction extends BaseSingleInputAggregationFunction<Geometry, ByteArray> { + + /** + * Constructor for the class. + * + * @param expression Expression to aggregate on. + */ + public StUnionAggregationFunction(ExpressionContext expression) { + super(expression); + } + + @Override + public AggregationFunctionType getType() { + return AggregationFunctionType.ST_UNION; + } + + @Override + public void accept(AggregationFunctionVisitorBase visitor) { + visitor.visit(this); + } + + @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) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + Geometry geometry = aggregationResultHolder.getResult(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + geometry = geometry == null ? value : geometry.union(value); + } + aggregationResultHolder.setValue(geometry); + } + + @Override + public void aggregateGroupBySV(int length, int[] groupKeyArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + int groupKey = groupKeyArray[i]; + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + + @Override + public void aggregateGroupByMV(int length, int[][] groupKeysArray, GroupByResultHolder groupByResultHolder, + Map<ExpressionContext, BlockValSet> blockValSetMap) { + byte[][] bytesArray = blockValSetMap.get(_expression).getBytesValuesSV(); + for (int i = 0; i < length; i++) { + Geometry value = GeometrySerializer.deserialize(bytesArray[i]); + for (int groupKey : groupKeysArray[i]) { + groupByResultHolder.setValueForKey(groupKey, groupByResultHolder.getResult(groupKey) == null ? value + : ((Geometry) groupByResultHolder.getResult(groupKey)).union(value)); + } + } + } + + @Override + public Geometry extractAggregationResult(AggregationResultHolder aggregationResultHolder) { + return aggregationResultHolder.getResult(); Review comment: The holder might contain `null`, but before returning the segment result, we need to convert `null` to the default value ---------------------------------------------------------------- This is an automated message from the Apache Git Service. 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