Struct parquet_format_safe::DictionaryPageHeader

pub struct DictionaryPageHeader {
    pub num_values: i32,
    pub encoding: Encoding,
    pub is_sorted: Option<bool>,
}

The dictionary page must be placed at the first position of the column chunk if it is partly or completely dictionary encoded. At most one dictionary page can be placed in a column chunk.

Fields

num_values: i32

Number of values in the dictionary *

encoding: Encoding

Encoding using this dictionary page *

is_sorted: Option<bool>

If true, the entries in the dictionary are sorted in ascending order *

Implementations

impl DictionaryPageHeader

pub fn new<F3>( num_values: i32, encoding: Encoding, is_sorted: F3 ) -> DictionaryPageHeader

where F3: Into<Option<bool>>,

pub fn read_from_in_protocol<T: TInputProtocol>( i_prot: &mut T ) -> Result<DictionaryPageHeader>

pub async fn stream_from_in_protocol<T: TInputStreamProtocol>( i_prot: &mut T ) -> Result<DictionaryPageHeader>

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

pub async fn write_to_out_stream_protocol<T: TOutputStreamProtocol>( &self, o_prot: &mut T ) -> Result<usize>

Trait Implementations

impl AsyncReadThrift for DictionaryPageHeader

fn stream_from_in_protocol<'life0, 'async_trait, T>( i_prot: &'life0 mut T ) -> Pin<Box<dyn Future<Output = Result<DictionaryPageHeader>> + Send + 'async_trait>>

where T: 'async_trait + TInputStreamProtocol, 'life0: 'async_trait,

impl Clone for DictionaryPageHeader

fn clone(&self) -> DictionaryPageHeader

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for DictionaryPageHeader

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

Formats the value using the given formatter.

impl Hash for DictionaryPageHeader

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 DictionaryPageHeader

fn cmp(&self, other: &DictionaryPageHeader) -> 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 DictionaryPageHeader

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for DictionaryPageHeader

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl ReadThrift for DictionaryPageHeader

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

impl Eq for DictionaryPageHeader

impl StructuralPartialEq for DictionaryPageHeader