Examples with DecimalExtractor com.amazonaws.athena.connector.lambda.data.writers.extractors.DecimalExtractor used on opensource projects

Example 1 with DecimalExtractor

use of com.amazonaws.athena.connector.lambda.data.writers.extractors.DecimalExtractor in project aws-athena-query-federation by awslabs.

the class GeneratedRowWriter method makeFieldWriter.

private FieldWriter makeFieldWriter(FieldVector vector) {
    Field field = vector.getField();
    String fieldName = field.getName();
    Types.MinorType fieldType = Types.getMinorTypeForArrowType(field.getType());
    Extractor extractor = extractors.get(fieldName);
    ConstraintProjector constraint = constraints.get(fieldName);
    FieldWriterFactory factory = fieldWriterFactories.get(fieldName);
    if (factory != null) {
        return factory.create(vector, extractor, constraint);
    }
    if (extractor == null) {
        throw new IllegalStateException("Missing extractor for field[" + fieldName + "]");
    }
    switch(fieldType) {
        case INT:
            return new IntFieldWriter((IntExtractor) extractor, (IntVector) vector, constraint);
        case BIGINT:
            return new BigIntFieldWriter((BigIntExtractor) extractor, (BigIntVector) vector, constraint);
        case DATEMILLI:
            return new DateMilliFieldWriter((DateMilliExtractor) extractor, (DateMilliVector) vector, constraint);
        case DATEDAY:
            return new DateDayFieldWriter((DateDayExtractor) extractor, (DateDayVector) vector, constraint);
        case TINYINT:
            return new TinyIntFieldWriter((TinyIntExtractor) extractor, (TinyIntVector) vector, constraint);
        case SMALLINT:
            return new SmallIntFieldWriter((SmallIntExtractor) extractor, (SmallIntVector) vector, constraint);
        case FLOAT4:
            return new Float4FieldWriter((Float4Extractor) extractor, (Float4Vector) vector, constraint);
        case FLOAT8:
            return new Float8FieldWriter((Float8Extractor) extractor, (Float8Vector) vector, constraint);
        case DECIMAL:
            return new DecimalFieldWriter((DecimalExtractor) extractor, (DecimalVector) vector, constraint);
        case BIT:
            return new BitFieldWriter((BitExtractor) extractor, (BitVector) vector, constraint);
        case VARCHAR:
            return new VarCharFieldWriter((VarCharExtractor) extractor, (VarCharVector) vector, constraint);
        case VARBINARY:
            return new VarBinaryFieldWriter((VarBinaryExtractor) extractor, (VarBinaryVector) vector, constraint);
        default:
            throw new RuntimeException(fieldType + " is not supported");
    }
}

Example 2 with DecimalExtractor

use of com.amazonaws.athena.connector.lambda.data.writers.extractors.DecimalExtractor in project aws-athena-query-federation by awslabs.

the class ExampleRecordHandler method makeExtractor.

/**
 * Creates an Extractor for the given field. In this example the extractor just creates some random data.
 */
private Extractor makeExtractor(Field field, RowContext rowContext) {
    Types.MinorType fieldType = Types.getMinorTypeForArrowType(field.getType());
    // they need to match the split otherwise filtering will brake in unexpected ways.
    if (field.getName().equals("year")) {
        return (IntExtractor) (Object context, NullableIntHolder dst) -> {
            dst.isSet = 1;
            dst.value = rowContext.getYear();
        };
    } else if (field.getName().equals("month")) {
        return (IntExtractor) (Object context, NullableIntHolder dst) -> {
            dst.isSet = 1;
            dst.value = rowContext.getMonth();
        };
    } else if (field.getName().equals("day")) {
        return (IntExtractor) (Object context, NullableIntHolder dst) -> {
            dst.isSet = 1;
            dst.value = rowContext.getDay();
        };
    }
    switch(fieldType) {
        case INT:
            return (IntExtractor) (Object context, NullableIntHolder dst) -> {
                dst.isSet = 1;
                dst.value = ((RowContext) context).seed * (((RowContext) context).negative ? -1 : 1);
            };
        case DATEMILLI:
            return (DateMilliExtractor) (Object context, NullableDateMilliHolder dst) -> {
                dst.isSet = 1;
                dst.value = ((RowContext) context).seed * (((RowContext) context).negative ? -1 : 1);
            };
        case DATEDAY:
            return (DateDayExtractor) (Object context, NullableDateDayHolder dst) -> {
                dst.isSet = 1;
                dst.value = ((RowContext) context).seed * (((RowContext) context).negative ? -1 : 1);
            };
        case TINYINT:
            return (TinyIntExtractor) (Object context, NullableTinyIntHolder dst) -> {
                dst.isSet = 1;
                dst.value = (byte) ((((RowContext) context).seed % 4) * (((RowContext) context).negative ? -1 : 1));
            };
        case SMALLINT:
            return (SmallIntExtractor) (Object context, NullableSmallIntHolder dst) -> {
                dst.isSet = 1;
                dst.value = (short) ((((RowContext) context).seed % 4) * (((RowContext) context).negative ? -1 : 1));
            };
        case FLOAT4:
            return (Float4Extractor) (Object context, NullableFloat4Holder dst) -> {
                dst.isSet = 1;
                dst.value = ((float) ((RowContext) context).seed) * 1.1f * (((RowContext) context).negative ? -1f : 1f);
            };
        case FLOAT8:
            return (Float8Extractor) (Object context, NullableFloat8Holder dst) -> {
                dst.isSet = 1;
                dst.value = ((double) ((RowContext) context).seed) * 1.1D;
            };
        case DECIMAL:
            return (DecimalExtractor) (Object context, NullableDecimalHolder dst) -> {
                dst.isSet = 1;
                double d8Val = ((RowContext) context).seed * 1.1D * (((RowContext) context).negative ? -1d : 1d);
                BigDecimal bdVal = new BigDecimal(d8Val);
                dst.value = bdVal.setScale(((ArrowType.Decimal) field.getType()).getScale(), RoundingMode.HALF_UP);
            };
        case BIT:
            return (BitExtractor) (Object context, NullableBitHolder dst) -> {
                dst.isSet = 1;
                dst.value = ((RowContext) context).seed % 2;
            };
        case BIGINT:
            return (BigIntExtractor) (Object context, NullableBigIntHolder dst) -> {
                dst.isSet = 1;
                dst.value = ((RowContext) context).seed * 1L * (((RowContext) context).negative ? -1 : 1);
            };
        case VARCHAR:
            return (VarCharExtractor) (Object context, NullableVarCharHolder dst) -> {
                dst.isSet = 1;
                dst.value = "VarChar" + ((RowContext) context).seed;
            };
        case VARBINARY:
            return (VarBinaryExtractor) (Object context, NullableVarBinaryHolder dst) -> {
                dst.isSet = 1;
                dst.value = ("VarChar" + ((RowContext) context).seed).getBytes(Charsets.UTF_8);
            };
        default:
            return null;
    }
}