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

Example 76 with PostAggregator

use of org.apache.druid.query.aggregation.PostAggregator 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 77 with PostAggregator

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

the class DoublesSketchToCDFPostAggregatorTest method testSerde.

@Test
public void testSerde() throws JsonProcessingException {
    final PostAggregator there = new DoublesSketchToCDFPostAggregator("post", new FieldAccessPostAggregator("field1", "sketch"), new double[] { 0.25, 0.75 });
    DefaultObjectMapper mapper = new DefaultObjectMapper();
    DoublesSketchToCDFPostAggregator andBackAgain = mapper.readValue(mapper.writeValueAsString(there), DoublesSketchToCDFPostAggregator.class);
    Assert.assertEquals(there, andBackAgain);
    Assert.assertArrayEquals(there.getCacheKey(), andBackAgain.getCacheKey());
}

Example 78 with PostAggregator

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

the class DoublesSketchToCDFPostAggregatorTest method testToString.

@Test
public void testToString() {
    final PostAggregator postAgg = new DoublesSketchToCDFPostAggregator("post", new FieldAccessPostAggregator("field1", "sketch"), new double[] { 0.25, 0.75 });
    Assert.assertEquals("DoublesSketchToCDFPostAggregator{name='post', field=FieldAccessPostAggregator{name='field1', fieldName='sketch'}, splitPoints=[0.25, 0.75]}", postAgg.toString());
}

Example 79 with PostAggregator

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

the class DoublesSketchToQuantilePostAggregatorTest method testToString.

@Test
public void testToString() {
    final PostAggregator postAgg = new DoublesSketchToQuantilePostAggregator("post", new FieldAccessPostAggregator("field1", "sketch"), 0.5);
    Assert.assertEquals("DoublesSketchToQuantilePostAggregator{name='post', field=FieldAccessPostAggregator{name='field1', fieldName='sketch'}, fraction=0.5}", postAgg.toString());
}

Example 80 with PostAggregator

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

the class DoublesSketchToRankPostAggregatorTest method testSerde.

@Test
public void testSerde() throws JsonProcessingException {
    final PostAggregator there = new DoublesSketchToRankPostAggregator("post", new FieldAccessPostAggregator("field1", "sketch"), 0);
    DefaultObjectMapper mapper = new DefaultObjectMapper();
    DoublesSketchToRankPostAggregator andBackAgain = mapper.readValue(mapper.writeValueAsString(there), DoublesSketchToRankPostAggregator.class);
    Assert.assertEquals(there, andBackAgain);
    Assert.assertArrayEquals(there.getCacheKey(), andBackAgain.getCacheKey());
}