Struct PageHeader 

pub(crate) struct PageHeader {
    pub(crate) type: PageType,
    pub(crate) uncompressed_page_size: i32,
    pub(crate) compressed_page_size: i32,
    pub(crate) crc: Option<i32>,
    pub(crate) data_page_header: Option<DataPageHeader>,
    pub(crate) index_page_header: Option<IndexPageHeader>,
    pub(crate) dictionary_page_header: Option<DictionaryPageHeader>,
    pub(crate) data_page_header_v2: Option<DataPageHeaderV2>,
}

Fields

type: PageType

the type of the page: indicates which of the *_header fields is set

uncompressed_page_size: i32

Uncompressed page size in bytes (not including this header)

compressed_page_size: i32

Compressed (and potentially encrypted) page size in bytes, not including this header

crc: Option<i32>

The 32-bit CRC checksum for the page, to be be calculated as follows:

data_page_header: Option<DataPageHeader>

index_page_header: Option<IndexPageHeader>

dictionary_page_header: Option<DictionaryPageHeader>

data_page_header_v2: Option<DataPageHeaderV2>

Implementations

impl PageHeader

pub(crate) fn read_thrift_without_stats<'a, R>(prot: &mut R) -> Result<Self>

where R: ThriftCompactInputProtocol<'a>,

Trait Implementations

impl Clone for PageHeader

fn clone(&self) -> PageHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PageHeader

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

Formats the value using the given formatter.

impl PartialEq for PageHeader

fn eq(&self, other: &PageHeader) -> 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<'a, R: ThriftCompactInputProtocol<'a>> ReadThrift<'a, R> for PageHeader

fn read_thrift(prot: &mut R) -> Result<Self>

Read an object of type Self from the input protocol object.

impl TryFrom<&PageHeader> for PageMetadata

type Error = ParquetError

The type returned in the event of a conversion error.

fn try_from(value: &PageHeader) -> Result<Self, Self::Error>

Performs the conversion.

impl WriteThrift for PageHeader

const ELEMENT_TYPE: ElementType = ElementType::Struct

The ElementType to use when a list of this object is written.

fn write_thrift<W: Write>( &self, writer: &mut ThriftCompactOutputProtocol<W>, ) -> Result<()>

Serialize this object to the given writer.

impl WriteThriftField for PageHeader

fn write_thrift_field<W: Write>( &self, writer: &mut ThriftCompactOutputProtocol<W>, field_id: i16, last_field_id: i16, ) -> Result<i16>

Used to write struct fields (which may be primitive or IDL defined types). This will write the field marker for the given field_id, using last_field_id to compute the field delta used by the Thrift compact protocol. On success this will return field_id to be used in chaining.

impl Eq for PageHeader

impl StructuralPartialEq for PageHeader