| /* |
| * 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.datasketches.theta; |
| |
| import org.apache.datasketches.theta.Union; |
| import org.apache.druid.query.aggregation.BufferAggregator; |
| import org.apache.druid.query.monomorphicprocessing.RuntimeShapeInspector; |
| import org.apache.druid.segment.BaseObjectColumnValueSelector; |
| |
| import javax.annotation.Nullable; |
| import java.nio.ByteBuffer; |
| |
| public class SketchBufferAggregator implements BufferAggregator |
| { |
| private final BaseObjectColumnValueSelector selector; |
| private final SketchBufferAggregatorHelper helper; |
| |
| public SketchBufferAggregator(BaseObjectColumnValueSelector selector, int size, int maxIntermediateSize) |
| { |
| this.selector = selector; |
| this.helper = new SketchBufferAggregatorHelper(size, maxIntermediateSize); |
| } |
| |
| @Override |
| public void init(ByteBuffer buf, int position) |
| { |
| helper.init(buf, position); |
| } |
| |
| @Override |
| public void aggregate(ByteBuffer buf, int position) |
| { |
| Object update = selector.getObject(); |
| if (update == null) { |
| return; |
| } |
| |
| Union union = helper.getOrCreateUnion(buf, position); |
| SketchAggregator.updateUnion(union, update); |
| } |
| |
| |
| @Nullable |
| @Override |
| public Object get(ByteBuffer buf, int position) |
| { |
| return helper.get(buf, position); |
| } |
| |
| @Override |
| public float getFloat(ByteBuffer buf, int position) |
| { |
| throw new UnsupportedOperationException("Not implemented"); |
| } |
| |
| @Override |
| public long getLong(ByteBuffer buf, int position) |
| { |
| throw new UnsupportedOperationException("Not implemented"); |
| } |
| |
| @Override |
| public double getDouble(ByteBuffer buf, int position) |
| { |
| throw new UnsupportedOperationException("Not implemented"); |
| } |
| |
| @Override |
| public void close() |
| { |
| helper.clear(); |
| } |
| |
| @Override |
| public void inspectRuntimeShape(RuntimeShapeInspector inspector) |
| { |
| inspector.visit("selector", selector); |
| } |
| |
| @Override |
| public void relocate(int oldPosition, int newPosition, ByteBuffer oldBuffer, ByteBuffer newBuffer) |
| { |
| helper.relocate(oldPosition, newPosition, oldBuffer, newBuffer); |
| } |
| } |