| /* |
| * 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.druid.query.aggregation.histogram; |
| |
| import org.apache.druid.query.aggregation.VectorAggregator; |
| import org.apache.druid.segment.vector.VectorValueSelector; |
| |
| import javax.annotation.Nullable; |
| import java.nio.ByteBuffer; |
| |
| public class FixedBucketsHistogramVectorAggregator implements VectorAggregator |
| { |
| private final VectorValueSelector selector; |
| private final FixedBucketsHistogramBufferAggregatorHelper innerAggregator; |
| |
| public FixedBucketsHistogramVectorAggregator( |
| VectorValueSelector selector, |
| double lowerLimit, |
| double upperLimit, |
| int numBuckets, |
| FixedBucketsHistogram.OutlierHandlingMode outlierHandlingMode |
| ) |
| { |
| this.selector = selector; |
| this.innerAggregator = new FixedBucketsHistogramBufferAggregatorHelper( |
| lowerLimit, |
| upperLimit, |
| numBuckets, |
| outlierHandlingMode |
| ); |
| } |
| |
| @Override |
| public void init(ByteBuffer buf, int position) |
| { |
| innerAggregator.init(buf, position); |
| } |
| |
| @Override |
| public void aggregate(ByteBuffer buf, int position, int startRow, int endRow) |
| { |
| double[] vector = selector.getDoubleVector(); |
| boolean[] isNull = selector.getNullVector(); |
| FixedBucketsHistogram histogram = innerAggregator.get(buf, position); |
| for (int i = startRow; i < endRow; i++) { |
| histogram.combine(toObject(vector, isNull, i)); |
| } |
| innerAggregator.put(buf, position, histogram); |
| } |
| |
| @Override |
| public void aggregate(ByteBuffer buf, int numRows, int[] positions, @Nullable int[] rows, int positionOffset) |
| { |
| double[] vector = selector.getDoubleVector(); |
| boolean[] isNull = selector.getNullVector(); |
| for (int i = 0; i < numRows; i++) { |
| int position = positions[i] + positionOffset; |
| int index = rows != null ? rows[i] : i; |
| Double val = toObject(vector, isNull, index); |
| innerAggregator.aggregate(buf, position, val); |
| } |
| } |
| |
| @Nullable |
| @Override |
| public Object get(ByteBuffer buf, int position) |
| { |
| return innerAggregator.get(buf, position); |
| } |
| |
| @Override |
| public void close() |
| { |
| // Nothing to close |
| } |
| |
| @Nullable |
| private Double toObject(double[] vector, @Nullable boolean[] isNull, int index) |
| { |
| return (isNull != null && isNull[index]) ? null : vector[index]; |
| } |
| } |