Struct parquet::format::DataPageHeader

pub struct DataPageHeader {
    pub num_values: i32,
    pub encoding: Encoding,
    pub definition_level_encoding: Encoding,
    pub repetition_level_encoding: Encoding,
    pub statistics: Option<Statistics>,
}

Data page header

Fields

num_values: i32

Number of values, including NULLs, in this data page.

If a OffsetIndex is present, a page must begin at a row boundary (repetition_level = 0). Otherwise, pages may begin within a row (repetition_level > 0).

encoding: Encoding

Encoding used for this data page *

definition_level_encoding: Encoding

Encoding used for definition levels *

repetition_level_encoding: Encoding

Encoding used for repetition levels *

statistics: Option<Statistics>

Optional statistics for the data in this page *

Implementations

impl DataPageHeader

pub fn new<F5>( num_values: i32, encoding: Encoding, definition_level_encoding: Encoding, repetition_level_encoding: Encoding, statistics: F5, ) -> DataPageHeader

where F5: Into<Option<Statistics>>,

Trait Implementations

impl Clone for DataPageHeader

fn clone(&self) -> DataPageHeader

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DataPageHeader

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

Formats the value using the given formatter.

impl Hash for DataPageHeader

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

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 Ord for DataPageHeader

fn cmp(&self, other: &DataPageHeader) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for DataPageHeader

fn eq(&self, other: &DataPageHeader) -> 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 PartialOrd for DataPageHeader

fn partial_cmp(&self, other: &DataPageHeader) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl TSerializable for DataPageHeader

fn read_from_in_protocol<T: TInputProtocol>( i_prot: &mut T, ) -> Result<DataPageHeader>

Reads the struct from the input Thrift protocol

fn write_to_out_protocol<T: TOutputProtocol>( &self, o_prot: &mut T, ) -> Result<()>

Writes the struct to the output Thrift protocol

impl Eq for DataPageHeader

impl StructuralPartialEq for DataPageHeader