parquet::column::page

Enum Page

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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§

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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

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DataPageV2

Data page Parquet format v2.

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§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

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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§

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impl Page

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pub fn page_type(&self) -> PageType

Returns PageType for this page.

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pub fn buffer(&self) -> &Bytes

Returns internal byte buffer reference for this page.

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pub fn num_values(&self) -> u32

Returns number of values in this page.

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pub fn encoding(&self) -> Encoding

Returns this page Encoding.

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

Returns optional Statistics.

Trait Implementations§

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impl Clone for Page

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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§

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impl !Freeze for Page

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impl RefUnwindSafe for Page

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impl Send for Page

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impl Sync for Page

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impl Unpin for Page

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impl UnwindSafe for Page

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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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
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,

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impl<T> ErasedDestructor for T
where T: 'static,

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impl<T> MaybeSendSync for T