Examples with Builder com.facebook.presto.spi.statistics.ColumnStatistics.Builder used on opensource projects

Example 1 with Builder

use of com.facebook.presto.spi.statistics.ColumnStatistics.Builder in project presto by prestodb.

the class ConnectorFilterStatsCalculatorService method toColumnStatistics.

private static ColumnStatistics toColumnStatistics(VariableStatsEstimate variableStatsEstimate, double rowCount) {
    if (variableStatsEstimate.isUnknown()) {
        return ColumnStatistics.empty();
    }
    double nullsFractionDouble = variableStatsEstimate.getNullsFraction();
    double nonNullRowsCount = rowCount * (1.0 - nullsFractionDouble);
    Builder builder = ColumnStatistics.builder();
    if (!Double.isNaN(nullsFractionDouble)) {
        builder.setNullsFraction(Estimate.of(nullsFractionDouble));
    }
    if (!Double.isNaN(variableStatsEstimate.getDistinctValuesCount())) {
        builder.setDistinctValuesCount(Estimate.of(variableStatsEstimate.getDistinctValuesCount()));
    }
    if (!Double.isNaN(variableStatsEstimate.getAverageRowSize())) {
        builder.setDataSize(Estimate.of(variableStatsEstimate.getAverageRowSize() * nonNullRowsCount));
    }
    if (!Double.isNaN(variableStatsEstimate.getLowValue()) && !Double.isNaN(variableStatsEstimate.getHighValue())) {
        builder.setRange(new DoubleRange(variableStatsEstimate.getLowValue(), variableStatsEstimate.getHighValue()));
    }
    return builder.build();
}