Examples with IntDoubleComparator com.linkedin.pinot.common.utils.Pairs.IntDoubleComparator used on opensource projects

Example 1 with IntDoubleComparator

use of com.linkedin.pinot.common.utils.Pairs.IntDoubleComparator in project pinot by linkedin.

the class DoubleGroupByResultHolderTest method testTrimResults.

/**
   * Helper method for testing trim results.
   * Sets a max size on the result holder and adds more values than the max size of the result holder.
   * Then asserts that the right results survive after trimming.
   *
   * @param minOrder
   */
void testTrimResults(final boolean minOrder) {
    GroupByResultHolder resultHolder = new DoubleGroupByResultHolder(INITIAL_CAPACITY, MAX_CAPACITY, INITIAL_CAPACITY, DEFAULT_VALUE, minOrder);
    List<IntDoublePair> expected = new ArrayList<>(MAX_CAPACITY);
    for (int i = 0; i < INITIAL_CAPACITY; i++) {
        resultHolder.setValueForKey(i, _expected[i]);
        expected.add(new IntDoublePair(i, _expected[i]));
    }
    // This will trigger the transition from array based to map based storage within the result holder.
    resultHolder.ensureCapacity(MAX_CAPACITY);
    for (int i = INITIAL_CAPACITY; i < MAX_CAPACITY; i++) {
        resultHolder.setValueForKey(i, _expected[i]);
        expected.add(new IntDoublePair(i, _expected[i]));
    }
    // Trim the results.
    resultHolder.trimResults();
    // Sort the input
    Collections.sort(expected, new IntDoubleComparator(!minOrder));
    // Ensure that all the correct group keys survive after trimming.
    for (int i = 0; i < INITIAL_CAPACITY; i++) {
        IntDoublePair pair = expected.get(i);
        Assert.assertEquals(resultHolder.getDoubleResult(pair.getIntValue()), pair.getDoubleValue());
    }
}