Examples with TestDoubleColumnSelectorImpl org.apache.druid.query.aggregation.TestDoubleColumnSelectorImpl used on opensource projects

Example 1 with TestDoubleColumnSelectorImpl

use of org.apache.druid.query.aggregation.TestDoubleColumnSelectorImpl in project druid by druid-io.

the class DoublesSketchToHistogramPostAggregatorTest method emptySketch.

@Test
public void emptySketch() {
    final TestDoubleColumnSelectorImpl selector = new TestDoubleColumnSelectorImpl(null);
    final Aggregator agg = new DoublesSketchBuildAggregator(selector, 8);
    final Map<String, Object> fields = new HashMap<>();
    fields.put("sketch", agg.get());
    final PostAggregator postAgg = new DoublesSketchToHistogramPostAggregator("histogram", new FieldAccessPostAggregator("field", "sketch"), new double[] { 3.5 }, null);
    final double[] histogram = (double[]) postAgg.compute(fields);
    Assert.assertNotNull(histogram);
    Assert.assertEquals(2, histogram.length);
    Assert.assertTrue(Double.isNaN(histogram[0]));
    Assert.assertTrue(Double.isNaN(histogram[1]));
}

Example 2 with TestDoubleColumnSelectorImpl

use of org.apache.druid.query.aggregation.TestDoubleColumnSelectorImpl in project druid by druid-io.

the class DoublesSketchToQuantilesPostAggregatorTest method emptySketch.

@Test
public void emptySketch() {
    final TestDoubleColumnSelectorImpl selector = new TestDoubleColumnSelectorImpl(null);
    final Aggregator agg = new DoublesSketchBuildAggregator(selector, 8);
    final Map<String, Object> fields = new HashMap<>();
    fields.put("sketch", agg.get());
    final PostAggregator postAgg = new DoublesSketchToQuantilesPostAggregator("quantiles", new FieldAccessPostAggregator("field", "sketch"), new double[] { 0, 0.5, 1 });
    final double[] quantiles = (double[]) postAgg.compute(fields);
    Assert.assertNotNull(quantiles);
    Assert.assertEquals(3, quantiles.length);
    Assert.assertTrue(Double.isNaN(quantiles[0]));
    Assert.assertTrue(Double.isNaN(quantiles[1]));
    Assert.assertTrue(Double.isNaN(quantiles[2]));
}

Example 3 with TestDoubleColumnSelectorImpl

use of org.apache.druid.query.aggregation.TestDoubleColumnSelectorImpl in project druid by druid-io.

the class DoublesSketchToCDFPostAggregatorTest method emptySketch.

@Test
public void emptySketch() {
    final TestDoubleColumnSelectorImpl selector = new TestDoubleColumnSelectorImpl(null);
    final Aggregator agg = new DoublesSketchBuildAggregator(selector, 8);
    final Map<String, Object> fields = new HashMap<>();
    fields.put("sketch", agg.get());
    final PostAggregator postAgg = new DoublesSketchToCDFPostAggregator("cdf", new FieldAccessPostAggregator("field", "sketch"), new double[] { 4 });
    final double[] histogram = (double[]) postAgg.compute(fields);
    Assert.assertNotNull(histogram);
    Assert.assertEquals(2, histogram.length);
    Assert.assertTrue(Double.isNaN(histogram[0]));
    Assert.assertTrue(Double.isNaN(histogram[1]));
}

Example 4 with TestDoubleColumnSelectorImpl

use of org.apache.druid.query.aggregation.TestDoubleColumnSelectorImpl in project druid by druid-io.

the class DoublesSketchToCDFPostAggregatorTest method normalCase.

@Test
public void normalCase() {
    final double[] values = new double[] { 1, 2, 3, 4, 5, 6 };
    final TestDoubleColumnSelectorImpl selector = new TestDoubleColumnSelectorImpl(values);
    final Aggregator agg = new DoublesSketchBuildAggregator(selector, 8);
    // noinspection ForLoopReplaceableByForEach
    for (int i = 0; i < values.length; i++) {
        agg.aggregate();
        selector.increment();
    }
    final Map<String, Object> fields = new HashMap<>();
    fields.put("sketch", agg.get());
    final PostAggregator postAgg = new DoublesSketchToCDFPostAggregator("cdf", new FieldAccessPostAggregator("field", "sketch"), // half of the distribution is below 4
    new double[] { 4 });
    final double[] cdf = (double[]) postAgg.compute(fields);
    Assert.assertNotNull(cdf);
    Assert.assertEquals(2, cdf.length);
    Assert.assertEquals(0.5, cdf[0], 0);
    Assert.assertEquals(1.0, cdf[1], 0);
}

Example 5 with TestDoubleColumnSelectorImpl

use of org.apache.druid.query.aggregation.TestDoubleColumnSelectorImpl in project druid by druid-io.

the class DoublesSketchToRankPostAggregatorTest method normalCase.

@Test
public void normalCase() {
    final double[] values = new double[] { 1, 2, 3, 4, 5, 6 };
    final TestDoubleColumnSelectorImpl selector = new TestDoubleColumnSelectorImpl(values);
    final Aggregator agg = new DoublesSketchBuildAggregator(selector, 8);
    // noinspection ForLoopReplaceableByForEach
    for (int i = 0; i < values.length; i++) {
        agg.aggregate();
        selector.increment();
    }
    final Map<String, Object> fields = new HashMap<>();
    fields.put("sketch", agg.get());
    final PostAggregator postAgg = new DoublesSketchToRankPostAggregator("rank", new FieldAccessPostAggregator("field", "sketch"), 4);
    final double rank = (double) postAgg.compute(fields);
    Assert.assertEquals(0.5, rank, 0);
}