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

Example 81 with PostAggregator

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

the class DoublesSketchToRankPostAggregatorTest method testToString.

@Test
public void testToString() {
    final PostAggregator postAgg = new DoublesSketchToRankPostAggregator("post", new FieldAccessPostAggregator("field1", "sketch"), 0);
    Assert.assertEquals("DoublesSketchToRankPostAggregator{name='post', field=FieldAccessPostAggregator{name='field1', fieldName='sketch'}, value=0.0}", postAgg.toString());
}

Example 82 with PostAggregator

use of org.apache.druid.query.aggregation.PostAggregator 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);
}

Example 83 with PostAggregator

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

the class DoublesSketchToRankPostAggregatorTest 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 DoublesSketchToRankPostAggregator("rank", new FieldAccessPostAggregator("field", "sketch"), 0);
    final double rank = (double) postAgg.compute(fields);
    Assert.assertTrue(Double.isNaN(rank));
}

Example 84 with PostAggregator

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

the class SketchToStringPostAggregatorTest method testCompute.

@Test
public void testCompute() {
    // not going to iterate over the selector since getting a summary of an empty sketch is sufficient
    final TestObjectColumnSelector selector = new TestObjectColumnSelector(new Object[0]);
    final Aggregator agg = new SketchAggregator(selector, 4096);
    final Map<String, Object> fields = new HashMap<>();
    fields.put("sketch", agg.get());
    final PostAggregator postAgg = new SketchToStringPostAggregator("summary", new FieldAccessPostAggregator("field", "sketch"));
    final String summary = (String) postAgg.compute(fields);
    Assert.assertNotNull(summary);
    Assert.assertTrue(summary.contains("SUMMARY"));
}

Example 85 with PostAggregator

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

the class SketchToStringPostAggregatorTest method testToString.

@Test
public void testToString() {
    final PostAggregator postAgg = new SketchToStringPostAggregator("summary", new FieldAccessPostAggregator("field", "sketch"));
    Assert.assertEquals("SketchToStringPostAggregator{name='summary', field=FieldAccessPostAggregator{name='field', fieldName='sketch'}}", postAgg.toString());
}