Examples with LongStatistics org.apache.parquet.column.statistics.LongStatistics used on opensource projects

Example 1 with LongStatistics

use of org.apache.parquet.column.statistics.LongStatistics in project drill by apache.

the class ParquetMetaStatCollector method getStat.

private ColumnStatistics getStat(Object min, Object max, Long numNull, PrimitiveType.PrimitiveTypeName primitiveType, OriginalType originalType, Integer repetitionLevel) {
    Statistics stat = Statistics.getStatsBasedOnType(primitiveType);
    Statistics convertedStat = stat;
    TypeProtos.MajorType type = ParquetGroupScan.getType(primitiveType, originalType);
    // Change to repeated if repetitionLevel > 0
    if (repetitionLevel != null && repetitionLevel > 0) {
        type = TypeProtos.MajorType.newBuilder().setMinorType(type.getMinorType()).setMode(TypeProtos.DataMode.REPEATED).build();
    }
    if (numNull != null) {
        stat.setNumNulls(numNull.longValue());
    }
    if (min != null && max != null) {
        switch(type.getMinorType()) {
            case INT:
            case TIME:
                ((IntStatistics) stat).setMinMax(Integer.parseInt(min.toString()), Integer.parseInt(max.toString()));
                break;
            case BIGINT:
            case TIMESTAMP:
                ((LongStatistics) stat).setMinMax(Long.parseLong(min.toString()), Long.parseLong(max.toString()));
                break;
            case FLOAT4:
                ((FloatStatistics) stat).setMinMax(Float.parseFloat(min.toString()), Float.parseFloat(max.toString()));
                break;
            case FLOAT8:
                ((DoubleStatistics) stat).setMinMax(Double.parseDouble(min.toString()), Double.parseDouble(max.toString()));
                break;
            case DATE:
                convertedStat = new LongStatistics();
                convertedStat.setNumNulls(stat.getNumNulls());
                final long minMS = convertToDrillDateValue(Integer.parseInt(min.toString()));
                final long maxMS = convertToDrillDateValue(Integer.parseInt(max.toString()));
                ((LongStatistics) convertedStat).setMinMax(minMS, maxMS);
                break;
            default:
        }
    }
    return new ColumnStatistics(convertedStat, type);
}

Example 2 with LongStatistics

use of org.apache.parquet.column.statistics.LongStatistics in project drill by apache.

the class RangeExprEvaluator method evalCastFunc.

private Statistics evalCastFunc(FunctionHolderExpression holderExpr, Statistics input) {
    try {
        DrillSimpleFuncHolder funcHolder = (DrillSimpleFuncHolder) holderExpr.getHolder();
        DrillSimpleFunc interpreter = funcHolder.createInterpreter();
        final ValueHolder minHolder, maxHolder;
        TypeProtos.MinorType srcType = holderExpr.args.get(0).getMajorType().getMinorType();
        TypeProtos.MinorType destType = holderExpr.getMajorType().getMinorType();
        if (srcType.equals(destType)) {
            // same type cast ==> NoOp.
            return input;
        } else if (!CAST_FUNC.containsKey(srcType) || !CAST_FUNC.get(srcType).contains(destType)) {
            // cast func between srcType and destType is NOT allowed.
            return null;
        }
        switch(srcType) {
            case INT:
                minHolder = ValueHolderHelper.getIntHolder(((IntStatistics) input).getMin());
                maxHolder = ValueHolderHelper.getIntHolder(((IntStatistics) input).getMax());
                break;
            case BIGINT:
                minHolder = ValueHolderHelper.getBigIntHolder(((LongStatistics) input).getMin());
                maxHolder = ValueHolderHelper.getBigIntHolder(((LongStatistics) input).getMax());
                break;
            case FLOAT4:
                minHolder = ValueHolderHelper.getFloat4Holder(((FloatStatistics) input).getMin());
                maxHolder = ValueHolderHelper.getFloat4Holder(((FloatStatistics) input).getMax());
                break;
            case FLOAT8:
                minHolder = ValueHolderHelper.getFloat8Holder(((DoubleStatistics) input).getMin());
                maxHolder = ValueHolderHelper.getFloat8Holder(((DoubleStatistics) input).getMax());
                break;
            default:
                return null;
        }
        final ValueHolder[] args1 = { minHolder };
        final ValueHolder[] args2 = { maxHolder };
        final ValueHolder minFuncHolder = InterpreterEvaluator.evaluateFunction(interpreter, args1, holderExpr.getName());
        final ValueHolder maxFuncHolder = InterpreterEvaluator.evaluateFunction(interpreter, args2, holderExpr.getName());
        switch(destType) {
            //TODO : need handle # of nulls.
            case INT:
                return getStatistics(((IntHolder) minFuncHolder).value, ((IntHolder) maxFuncHolder).value);
            case BIGINT:
                return getStatistics(((BigIntHolder) minFuncHolder).value, ((BigIntHolder) maxFuncHolder).value);
            case FLOAT4:
                return getStatistics(((Float4Holder) minFuncHolder).value, ((Float4Holder) maxFuncHolder).value);
            case FLOAT8:
                return getStatistics(((Float8Holder) minFuncHolder).value, ((Float8Holder) maxFuncHolder).value);
            default:
                return null;
        }
    } catch (Exception e) {
        throw new DrillRuntimeException("Error in evaluating function of " + holderExpr.getName());
    }
}

Example 3 with LongStatistics

use of org.apache.parquet.column.statistics.LongStatistics in project drill by apache.

the class RangeExprEvaluator method getStatistics.

private LongStatistics getStatistics(long min, long max) {
    final LongStatistics longStatistics = new LongStatistics();
    longStatistics.setMinMax(min, max);
    return longStatistics;
}

Example 4 with LongStatistics

use of org.apache.parquet.column.statistics.LongStatistics in project drill by apache.

the class ParquetFooterStatCollector method convertDateStatIfNecessary.

public static Statistics convertDateStatIfNecessary(Statistics stat, ParquetReaderUtility.DateCorruptionStatus containsCorruptDates) {
    IntStatistics dateStat = (IntStatistics) stat;
    LongStatistics dateMLS = new LongStatistics();
    boolean isDateCorrect = containsCorruptDates == ParquetReaderUtility.DateCorruptionStatus.META_SHOWS_NO_CORRUPTION;
    // Only do conversion when stat is NOT empty.
    if (!dateStat.isEmpty()) {
        dateMLS.setMinMax(convertToDrillDateValue(dateStat.getMin(), isDateCorrect), convertToDrillDateValue(dateStat.getMax(), isDateCorrect));
        dateMLS.setNumNulls(dateStat.getNumNulls());
    }
    return dateMLS;
}