Module type_conversion 

Module for transforming a typed arrow Array to VariantArray.

Re-exports

use arrow::array::ArrowNativeTypeOp; 🔒

use arrow::compute::kernels::cast_utils::parse_decimal; 🔒

use arrow::compute::CastOptions; 🔒

use arrow::compute::DecimalCast; 🔒

use arrow::compute::cast_num_to_bool; 🔒

use arrow::compute::cast_single_string_to_boolean_default; 🔒

use arrow::compute::float_to_decimal_opt; 🔒

use arrow::compute::num_cast; 🔒

use arrow::compute::rescale_decimal; 🔒

use arrow::compute::single_bool_to_numeric; 🔒

use arrow::compute::single_decimal_to_float_lossy; 🔒

use arrow::datatypes; 🔒

use arrow::datatypes::ArrowPrimitiveType; 🔒

use arrow::datatypes::ArrowTimestampType; 🔒

use arrow::datatypes::Decimal32Type; 🔒

use arrow::datatypes::Decimal64Type; 🔒

use arrow::datatypes::Decimal128Type; 🔒

use arrow::datatypes::Decimal256Type; 🔒

use arrow::datatypes::DecimalType; 🔒

use arrow::error::ArrowError; 🔒

use arrow::error::Result; 🔒

use chrono::DateTime; 🔒

use chrono::NaiveDate; 🔒

use chrono::NaiveDateTime; 🔒

use chrono::NaiveTime; 🔒

use chrono::Timelike; 🔒

use chrono::Utc; 🔒

use half::f16; 🔒

use num_traits::NumCast; 🔒

use parquet_variant::Variant; 🔒

use parquet_variant::VariantDecimal4; 🔒

use parquet_variant::VariantDecimal8; 🔒

use parquet_variant::VariantDecimal16; 🔒

pub(crate) use non_generic_conversion_single_value; 🔒

pub(crate) use generic_conversion_single_value; 🔒

pub(crate) use generic_conversion_single_value_with_result; 🔒

pub(crate) use primitive_conversion_single_value; 🔒

Macros

generic_conversion_single_value 🔒

Convert the value at a specific index in the given array into a Variant, using method requiring a generic type to downcast the generic array to a specific array type and cast_fn to transform the element.

generic_conversion_single_value_with_result 🔒

impl_decimal_cast_target 🔒

impl_primitive_from_variant 🔒

Macro to generate PrimitiveFromVariant implementations for Arrow primitive types

impl_timestamp_from_variant 🔒

non_generic_conversion_single_value 🔒

Convert the value at a specific index in the given array into a Variant.

primitive_conversion_single_value 🔒

Convert the value at a specific index in the given array into a Variant.

Enums

NumericKind 🔒

VariantCastMode 🔒

Controls the conversions allowed when extracting a typed value from a variant.

Traits

DecimalCastTarget 🔒

PrimitiveFromVariant 🔒

Extension trait for Arrow primitive types that can extract their native value from a Variant

ShredDecimalVariant 🔒

TimestampFromVariant 🔒

Extension trait for Arrow timestamp types that can extract their native value from a Variant We can’t use PrimitiveFromVariant directly because we need two implementations for each timestamp type – the NTZ param here.

Functions

always_none 🔒

as_num 🔒

Converts a boolean or numeric variant(integers, floating-point, and decimals) to the specified numeric type T.

cast_decimal_to_num 🔒

cast_naive_date 🔒

cast_time_utc 🔒

convert_to_timestamp_nano 🔒

convert_to_timestamp_ntz_nano 🔒

convert_to_unscaled_decimal 🔒

shred_variant_to_unscaled_decimal 🔒

Returns the unscaled integer representation for Arrow decimal type O from a Variant.

variant_cast_with_options 🔒

Cast a single Variant value with safe/strict semantics.

variant_to_boolean 🔒

variant_to_unscaled_decimal 🔒

Returns the unscaled integer representation for Arrow decimal type O from a Variant.