Enum parquet::column::page::Page

pub enum Page {
    DataPage {
        buf: Bytes,
        num_values: u32,
        encoding: Encoding,
        def_level_encoding: Encoding,
        rep_level_encoding: Encoding,
        statistics: Option<Statistics>,
    },
    DataPageV2 {
        buf: Bytes,
        num_values: u32,
        encoding: Encoding,
        num_nulls: u32,
        num_rows: u32,
        def_levels_byte_len: u32,
        rep_levels_byte_len: u32,
        is_compressed: bool,
        statistics: Option<Statistics>,
    },
    DictionaryPage {
        buf: Bytes,
        num_values: u32,
        encoding: Encoding,
        is_sorted: bool,
    },
}

Expand description

Parquet Page definition.

List of supported pages. These are 1-to-1 mapped from the equivalent Thrift definitions, except buf which used to store uncompressed bytes of the page.

Variants§

DataPage

Data page Parquet format v1.

Fields

§buf: Bytes

The underlying data buffer

§num_values: u32

Number of values in this page

§encoding: Encoding

Encoding for values in this page

§def_level_encoding: Encoding

Definition level encoding

§rep_level_encoding: Encoding

Repetition level encoding

§statistics: Option<Statistics>

Optional statistics for this page

DataPageV2

Data page Parquet format v2.

Fields

§buf: Bytes

The underlying data buffer

§num_values: u32

Number of values in this page

§encoding: Encoding

Encoding for values in this page

§num_nulls: u32

Number of null values in this page

§num_rows: u32

Number of rows in this page

§def_levels_byte_len: u32

Length of definition levels

§rep_levels_byte_len: u32

Length of repetition levels

§is_compressed: bool

Is this page compressed

§statistics: Option<Statistics>

Optional statistics for this page

DictionaryPage

Dictionary page.

Fields

§buf: Bytes

The underlying data buffer

§num_values: u32

Number of values in this page

§encoding: Encoding

Encoding for values in this page

§is_sorted: bool

Is dictionary page sorted

Implementations§

impl Page

pub fn page_type(&self) -> PageType

Returns PageType for this page.

pub fn buffer(&self) -> &Bytes

Returns internal byte buffer reference for this page.

pub fn num_values(&self) -> u32

Returns number of values in this page.

pub fn encoding(&self) -> Encoding

Returns this page Encoding.

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

Returns optional Statistics.

Trait Implementations§

impl Clone for Page

fn clone(&self) -> Page

Returns a copy of the value. Read more

1.0.0 · source§

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

Performs copy-assignment from source. Read more

Auto Trait Implementations§

impl !Freeze for Page

impl RefUnwindSafe for Page

impl Send for Page

impl Sync for Page

impl Unpin for Page

impl UnwindSafe for Page

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dst. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

fn vzip(self) -> V

impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,