Cpaulyz commented on code in PR #14331: URL: https://github.com/apache/iotdb/pull/14331#discussion_r1888093540
########## iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/aggregation/grouped/GroupedUserDefinedAggregateAccumulator.java: ########## @@ -0,0 +1,139 @@ +/* + * 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.iotdb.db.queryengine.execution.operator.source.relational.aggregation.grouped; + +import org.apache.iotdb.commons.udf.access.RecordIterator; +import org.apache.iotdb.db.queryengine.execution.operator.source.relational.aggregation.grouped.array.ObjectBigArray; +import org.apache.iotdb.udf.api.State; +import org.apache.iotdb.udf.api.relational.AggregateFunction; +import org.apache.iotdb.udf.api.utils.ResultValue; + +import org.apache.tsfile.block.column.Column; +import org.apache.tsfile.block.column.ColumnBuilder; +import org.apache.tsfile.read.common.block.column.BinaryColumn; +import org.apache.tsfile.read.common.block.column.BinaryColumnBuilder; +import org.apache.tsfile.read.common.block.column.RunLengthEncodedColumn; +import org.apache.tsfile.read.common.type.Type; +import org.apache.tsfile.utils.Binary; +import org.apache.tsfile.utils.RamUsageEstimator; + +import java.util.Arrays; +import java.util.List; + +import static com.google.common.base.Preconditions.checkArgument; + +public class GroupedUserDefinedAggregateAccumulator implements GroupedAccumulator { + + private static final long INSTANCE_SIZE = + RamUsageEstimator.shallowSizeOfInstance(GroupedUserDefinedAggregateAccumulator.class); + private final AggregateFunction aggregateFunction; + private final ObjectBigArray<State> stateArray; + private final List<Type> inputDataTypes; + + public GroupedUserDefinedAggregateAccumulator( + AggregateFunction aggregateFunction, List<Type> inputDataTypes) { + this.aggregateFunction = aggregateFunction; + this.stateArray = new ObjectBigArray<>(); + this.inputDataTypes = inputDataTypes; + } + + @Override + public long getEstimatedSize() { + return INSTANCE_SIZE; + } + + @Override + public void setGroupCount(long groupCount) { + stateArray.ensureCapacity(groupCount); + } + + private State getOrCreateState(int groupId) { + State state = stateArray.get(groupId); + if (state == null) { + state = aggregateFunction.createState(); + stateArray.set(groupId, state); + } + return state; + } + + @Override + public void addInput(int[] groupIds, Column[] arguments) { + RecordIterator iterator = + new RecordIterator( + Arrays.asList(arguments), inputDataTypes, arguments[0].getPositionCount()); + int index = 0; + while (iterator.hasNext()) { + int groupId = groupIds[index++]; + State state = getOrCreateState(groupId); + if (state == null) { + state = aggregateFunction.createState(); + stateArray.set(groupId, state); + } + aggregateFunction.addInput(state, iterator.next()); + } + } + + @Override + public void addIntermediate(int[] groupIds, Column argument) { + checkArgument( + argument instanceof BinaryColumn + || (argument instanceof RunLengthEncodedColumn + && ((RunLengthEncodedColumn) argument).getValue() instanceof BinaryColumn), + "intermediate input and output of UDAF should be BinaryColumn"); + + for (int i = 0; i < groupIds.length; i++) { + if (!argument.isNull(i)) { + State otherState = aggregateFunction.createState(); + Binary otherStateBinary = argument.getBinary(i); + otherState.deserialize(otherStateBinary.getValues()); + aggregateFunction.combineState(getOrCreateState(groupIds[i]), otherState); + } + } + } + + @Override + public void evaluateIntermediate(int groupId, ColumnBuilder columnBuilder) { + checkArgument( + columnBuilder instanceof BinaryColumnBuilder, + "intermediate input and output of UDAF should be BinaryColumn"); + if (stateArray.get(groupId) == null) { + columnBuilder.writeBinary(new Binary(new byte[0])); Review Comment: done -- 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]
