Package io.druid.query.aggregation

Examples of io.druid.query.aggregation.TestFloatColumnSelector

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  @Test
  public void testCompute()
  {
    ApproximateHistogram ah = buildHistogram(10, VALUES);
    final TestFloatColumnSelector selector = new TestFloatColumnSelector(VALUES);

    ApproximateHistogramAggregator agg = new ApproximateHistogramAggregator("price", selector, 10, Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY);
    for (int i = 0; i < VALUES.length; i++) {
      agg.aggregate();
      selector.increment();
    }

    Map<String, Object> metricValues = new HashMap<String, Object>();
    metricValues.put(agg.getName(), agg.get());
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  {
    final float[] values = {23, 19, 10, 16, 36, 2, 9, 32, 30, 45};
    final int resolution = 5;
    final int numBuckets = 5;

    final TestFloatColumnSelector selector = new TestFloatColumnSelector(values);

    ApproximateHistogramAggregatorFactory factory = new ApproximateHistogramAggregatorFactory(
        "billy", "billy", resolution, numBuckets, Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY
    );
    ApproximateHistogramBufferAggregator agg = new ApproximateHistogramBufferAggregator(selector, resolution, Float.NEGATIVE_INFINITY, Float.POSITIVE_INFINITY);
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Related Classes of io.druid.query.aggregation.TestFloatColumnSelector

  • io.druid.query.aggregation.histogram.ApproximateHistogramAggregatorTest
  • io.druid.query.aggregation.histogram.ApproximateHistogramPostAggregatorTest
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