Struct ParquetWriteOptions

pub struct ParquetWriteOptions {
    pub compression: ParquetCompression,
    pub statistics: StatisticsOptions,
    pub row_group_size: Option<usize>,
    pub data_page_size: Option<usize>,
    pub maintain_order: bool,
}

Available on crate feature polars-io only.

Fields

compression: ParquetCompression

Data page compression

statistics: StatisticsOptions

Compute and write column statistics.

row_group_size: Option<usize>

If None will be all written to a single row group.

data_page_size: Option<usize>

if None will be 1024^2 bytes

maintain_order: bool

maintain the order the data was processed

Implementations

impl ParquetWriteOptions

pub fn to_writer<F>(&self, f: F) -> ParquetWriter<F>

where F: Write,

Trait Implementations

impl Clone for ParquetWriteOptions

fn clone(&self) -> ParquetWriteOptions

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ParquetWriteOptions

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for ParquetWriteOptions

fn default() -> ParquetWriteOptions

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ParquetWriteOptions

fn deserialize<__D>( __deserializer: __D, ) -> Result<ParquetWriteOptions, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for ParquetWriteOptions

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for ParquetWriteOptions

fn eq(&self, other: &ParquetWriteOptions) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for ParquetWriteOptions

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl WriteDataFrameToFile for ParquetWriteOptions

fn write_df_to_file<W>(&self, df: DataFrame, file: W) -> Result<(), PolarsError>

where W: Write,

impl Copy for ParquetWriteOptions

impl Eq for ParquetWriteOptions

impl StructuralPartialEq for ParquetWriteOptions