Struct DataPageHeaderV2

pub struct DataPageHeaderV2 {
    pub num_values: i32,
    pub num_nulls: i32,
    pub num_rows: i32,
    pub encoding: Encoding,
    pub definition_levels_byte_length: i32,
    pub repetition_levels_byte_length: i32,
    pub is_compressed: Option<bool>,
    pub statistics: Option<Statistics>,
}

👎Deprecated since 57.0.0: The format module is no longer maintained, and will be removed in 59.0.0

New page format allowing reading levels without decompressing the data Repetition and definition levels are uncompressed The remaining section containing the data is compressed if is_compressed is true

Fields

num_values: i32

👎Deprecated since 57.0.0: The format module is no longer maintained, and will be removed in 59.0.0

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

num_nulls: i32

👎Deprecated since 57.0.0: The format module is no longer maintained, and will be removed in 59.0.0

Number of NULL values, in this data page. Number of non-null = num_values - num_nulls which is also the number of values in the data section *

num_rows: i32

👎Deprecated since 57.0.0: The format module is no longer maintained, and will be removed in 59.0.0

Number of rows in this data page. Every page must begin at a row boundary (repetition_level = 0): rows must not be split across page boundaries when using V2 data pages.

encoding: Encoding

👎Deprecated since 57.0.0: The format module is no longer maintained, and will be removed in 59.0.0

Encoding used for data in this page *

definition_levels_byte_length: i32

👎Deprecated since 57.0.0: The format module is no longer maintained, and will be removed in 59.0.0

Length of the definition levels

repetition_levels_byte_length: i32

👎Deprecated since 57.0.0: The format module is no longer maintained, and will be removed in 59.0.0

Length of the repetition levels

is_compressed: Option<bool>

👎Deprecated since 57.0.0: The format module is no longer maintained, and will be removed in 59.0.0

Whether the values are compressed. Which means the section of the page between definition_levels_byte_length + repetition_levels_byte_length + 1 and compressed_page_size (included) is compressed with the compression_codec. If missing it is considered compressed

statistics: Option<Statistics>

👎Deprecated since 57.0.0: The format module is no longer maintained, and will be removed in 59.0.0

Optional statistics for the data in this page *

Implementations

impl DataPageHeaderV2

pub fn new<F7, F8>( num_values: i32, num_nulls: i32, num_rows: i32, encoding: Encoding, definition_levels_byte_length: i32, repetition_levels_byte_length: i32, is_compressed: F7, statistics: F8, ) -> DataPageHeaderV2

where F7: Into<Option<bool>>, F8: Into<Option<Statistics>>,

👎Deprecated since 57.0.0: The format module is no longer maintained, and will be removed in 59.0.0

Trait Implementations

impl Clone for DataPageHeaderV2

fn clone(&self) -> DataPageHeaderV2

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DataPageHeaderV2

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

Formats the value using the given formatter.

impl Hash for DataPageHeaderV2

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 DataPageHeaderV2

fn cmp(&self, other: &DataPageHeaderV2) -> 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,

Restrict a value to a certain interval.

impl PartialEq for DataPageHeaderV2

fn eq(&self, other: &DataPageHeaderV2) -> 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 DataPageHeaderV2

fn partial_cmp(&self, other: &DataPageHeaderV2) -> 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 DataPageHeaderV2

fn read_from_in_protocol<T: TInputProtocol>( i_prot: &mut T, ) -> Result<DataPageHeaderV2>

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 DataPageHeaderV2

impl StructuralPartialEq for DataPageHeaderV2