Struct PostScript 

pub struct PostScript {
    pub footer_length: Option<u64>,
    pub compression: Option<i32>,
    pub compression_block_size: Option<u64>,
    pub version: Vec<u32>,
    pub metadata_length: Option<u64>,
    pub writer_version: Option<u32>,
    pub stripe_statistics_length: Option<u64>,
    pub magic: Option<String>,
}

Serialized length must be less that 255 bytes

Fields

footer_length: Option<u64>

compression: Option<i32>

compression_block_size: Option<u64>

version: Vec<u32>

the version of the file format [0, 11] = Hive 0.11 [0, 12] = Hive 0.12

metadata_length: Option<u64>

writer_version: Option<u32>

The version of the writer that wrote the file. This number is updated when we make fixes or large changes to the writer so that readers can detect whether a given bug is present in the data.

Only the Java ORC writer may use values under 6 (or missing) so that readers that predate ORC-202 treat the new writers correctly. Each writer should assign their own sequence of versions starting from 6.

Version of the ORC Java writer: 0 = original 1 = HIVE-8732 fixed (fixed stripe/file maximum statistics & string statistics use utf8 for min/max) 2 = HIVE-4243 fixed (use real column names from Hive tables) 3 = HIVE-12055 added (vectorized writer implementation) 4 = HIVE-13083 fixed (decimals write present stream correctly) 5 = ORC-101 fixed (bloom filters use utf8 consistently) 6 = ORC-135 fixed (timestamp statistics use utc) 7 = ORC-517 fixed (decimal64 min/max incorrect) 8 = ORC-203 added (trim very long string statistics) 9 = ORC-14 added (column encryption)

Version of the ORC C++ writer: 6 = original

Version of the Presto writer: 6 = original

Version of the Scritchley Go writer: 6 = original

Version of the Trino writer: 6 = original

stripe_statistics_length: Option<u64>

the number of bytes in the encrypted stripe statistics

magic: Option<String>

Leave this last in the record

Implementations

impl PostScript

pub fn footer_length(&self) -> u64

Returns the value of footer_length, or the default value if footer_length is unset.

pub fn compression(&self) -> CompressionKind

Returns the enum value of compression, or the default if the field is unset or set to an invalid enum value.

pub fn set_compression(&mut self, value: CompressionKind)

Sets compression to the provided enum value.

pub fn compression_block_size(&self) -> u64

Returns the value of compression_block_size, or the default value if compression_block_size is unset.

pub fn metadata_length(&self) -> u64

Returns the value of metadata_length, or the default value if metadata_length is unset.

pub fn writer_version(&self) -> u32

Returns the value of writer_version, or the default value if writer_version is unset.

pub fn stripe_statistics_length(&self) -> u64

Returns the value of stripe_statistics_length, or the default value if stripe_statistics_length is unset.

pub fn magic(&self) -> &str

Returns the value of magic, or the default value if magic is unset.

Trait Implementations

impl Clone for PostScript

fn clone(&self) -> PostScript

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PostScript

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

Formats the value using the given formatter.

impl Default for PostScript

fn default() -> Self

Returns the “default value” for a type.

impl Message for PostScript

fn encoded_len(&self) -> usize

Returns the encoded length of the message without a length delimiter.

fn clear(&mut self)

Clears the message, resetting all fields to their default.

fn encode(&self, buf: &mut impl BufMut) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message to a buffer.

fn encode_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message to a newly allocated buffer.

fn encode_length_delimited( &self, buf: &mut impl BufMut, ) -> Result<(), EncodeError>

where Self: Sized,

Encodes the message with a length-delimiter to a buffer.

fn encode_length_delimited_to_vec(&self) -> Vec<u8>

where Self: Sized,

Encodes the message with a length-delimiter to a newly allocated buffer.

fn decode(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes an instance of the message from a buffer.

fn decode_length_delimited(buf: impl Buf) -> Result<Self, DecodeError>

where Self: Default,

Decodes a length-delimited instance of the message from the buffer.

fn merge(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes an instance of the message from a buffer, and merges it into self.

fn merge_length_delimited(&mut self, buf: impl Buf) -> Result<(), DecodeError>

where Self: Sized,

Decodes a length-delimited instance of the message from buffer, and merges it into self.

impl PartialEq for PostScript

fn eq(&self, other: &PostScript) -> 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 StructuralPartialEq for PostScript