Struct parquet2::page::DataPage

pub struct DataPage {
    pub descriptor: Descriptor,
    pub selected_rows: Option<Vec<Interval>>,
    /* private fields */
}

A DataPage is an uncompressed, encoded representation of a Parquet data page. It holds actual data and thus cloning it is expensive.

Fields

descriptor: Descriptor

selected_rows: Option<Vec<Interval>>

Implementations

impl DataPage

pub fn new(
    header: DataPageHeader,
    buffer: Vec<u8>,
    dictionary_page: Option<Arc<dyn DictPage>>,
    descriptor: Descriptor,
    rows: Option<usize>
) -> Self

pub fn header(&self) -> &DataPageHeader

pub fn dictionary_page(&self) -> Option<&Arc<dyn DictPage>>

pub fn buffer(&self) -> &[u8]

pub fn selected_rows(&self) -> Option<&[Interval]>

the rows to be selected by this page. When None, all rows are to be considered.

pub fn buffer_mut(&mut self) -> &mut Vec<u8>

Returns a mutable reference to the internal buffer. Useful to recover the buffer after the page has been decoded.

pub fn num_values(&self) -> usize

pub fn encoding(&self) -> Encoding

pub fn definition_level_encoding(&self) -> Encoding

pub fn repetition_level_encoding(&self) -> Encoding

pub fn statistics(&self) -> Option<Result<Arc<dyn Statistics>>>

Decodes the raw statistics into a statistics

Trait Implementations

impl Clone for DataPage

fn clone(&self) -> DataPage

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DataPage

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

Formats the value using the given formatter.

impl Decompressed for DataPage

fn buffer_mut(&mut self) -> &mut Vec<u8>