| /* |
| * Copyright 2016, Yahoo! Inc. |
| * Licensed under the terms of the Apache License 2.0. See LICENSE file at the project root for terms. |
| */ |
| |
| package com.yahoo.sketches.hive.tuple; |
| |
| import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector; |
| import org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorUtils; |
| |
| import com.yahoo.sketches.tuple.ArrayOfDoublesSketch; |
| import com.yahoo.sketches.tuple.ArrayOfDoublesUpdatableSketch; |
| import com.yahoo.sketches.tuple.ArrayOfDoublesUpdatableSketchBuilder; |
| |
| class ArrayOfDoublesSketchState extends ArrayOfDoublesState { |
| |
| private ArrayOfDoublesUpdatableSketch sketch_; |
| |
| boolean isInitialized() { |
| return sketch_ != null; |
| } |
| |
| void init(final int nominalNumEntries, final float samplingProbability, final int numValues) { |
| super.init(nominalNumEntries, numValues); |
| sketch_ = new ArrayOfDoublesUpdatableSketchBuilder().setNominalEntries(nominalNumEntries) |
| .setSamplingProbability(samplingProbability).setNumberOfValues(numValues).build(); |
| } |
| |
| void update(final Object[] data, final PrimitiveObjectInspector keyInspector, |
| final PrimitiveObjectInspector[] valuesInspectors) { |
| final double[] values = new double[valuesInspectors.length]; |
| for (int i = 0; i < values.length; i++) { |
| values[i] = PrimitiveObjectInspectorUtils.getDouble(data[i + 1], valuesInspectors[i]); |
| } |
| switch (keyInspector.getPrimitiveCategory()) { |
| case BINARY: |
| sketch_.update(PrimitiveObjectInspectorUtils.getBinary(data[0], keyInspector).getBytes(), values); |
| return; |
| case BYTE: |
| sketch_.update(PrimitiveObjectInspectorUtils.getByte(data[0], keyInspector), values); |
| return; |
| case DOUBLE: |
| sketch_.update(PrimitiveObjectInspectorUtils.getDouble(data[0], keyInspector), values); |
| return; |
| case FLOAT: |
| sketch_.update(PrimitiveObjectInspectorUtils.getFloat(data[0], keyInspector), values); |
| return; |
| case INT: |
| sketch_.update(PrimitiveObjectInspectorUtils.getInt(data[0], keyInspector), values); |
| return; |
| case LONG: |
| sketch_.update(PrimitiveObjectInspectorUtils.getLong(data[0], keyInspector), values); |
| return; |
| case STRING: |
| sketch_.update(PrimitiveObjectInspectorUtils.getString(data[0], keyInspector), values); |
| return; |
| default: |
| throw new IllegalArgumentException( |
| "Unrecongnized input data type, please use data of type: " |
| + "byte, double, float, int, long, or string only."); |
| } |
| } |
| |
| @Override |
| ArrayOfDoublesSketch getResult() { |
| if (sketch_ == null) { return null; } |
| // assumes that it is called once at the end of processing |
| // since trimming to nominal number of entries is expensive |
| sketch_.trim(); |
| return sketch_.compact(); |
| } |
| |
| @Override |
| void reset() { |
| sketch_ = null; |
| } |
| |
| } |