Struct ColumnChunk

pub struct ColumnChunk {
    pub file_path: Option<String>,
    pub file_offset: i64,
    pub meta_data: Option<ColumnMetaData>,
    pub offset_index_offset: Option<i64>,
    pub offset_index_length: Option<i32>,
    pub column_index_offset: Option<i64>,
    pub column_index_length: Option<i32>,
    pub crypto_metadata: Option<ColumnCryptoMetaData>,
    pub encrypted_column_metadata: Option<Vec<u8>>,
}

Fields

file_path: Option<String>

File where column data is stored. If not set, assumed to be same file as metadata. This path is relative to the current file.

file_offset: i64

Deprecated: Byte offset in file_path to the ColumnMetaData

Past use of this field has been inconsistent, with some implementations using it to point to the ColumnMetaData and some using it to point to the first page in the column chunk. In many cases, the ColumnMetaData at this location is wrong. This field is now deprecated and should not be used. Writers should set this field to 0 if no ColumnMetaData has been written outside the footer.

meta_data: Option<ColumnMetaData>

Column metadata for this chunk. Some writers may also replicate this at the location pointed to by file_path/file_offset. Note: while marked as optional, this field is in fact required by most major Parquet implementations. As such, writers MUST populate this field.

offset_index_offset: Option<i64>

File offset of ColumnChunk’s OffsetIndex *

offset_index_length: Option<i32>

Size of ColumnChunk’s OffsetIndex, in bytes *

column_index_offset: Option<i64>

File offset of ColumnChunk’s ColumnIndex *

column_index_length: Option<i32>

Size of ColumnChunk’s ColumnIndex, in bytes *

crypto_metadata: Option<ColumnCryptoMetaData>

Crypto metadata of encrypted columns *

encrypted_column_metadata: Option<Vec<u8>>

Encrypted column metadata for this chunk *

Implementations

impl ColumnChunk

pub fn new<F1, F3, F4, F5, F6, F7, F8, F9>( file_path: F1, file_offset: i64, meta_data: F3, offset_index_offset: F4, offset_index_length: F5, column_index_offset: F6, column_index_length: F7, crypto_metadata: F8, encrypted_column_metadata: F9, ) -> ColumnChunk

where F1: Into<Option<String>>, F3: Into<Option<ColumnMetaData>>, F4: Into<Option<i64>>, F5: Into<Option<i32>>, F6: Into<Option<i64>>, F7: Into<Option<i32>>, F8: Into<Option<ColumnCryptoMetaData>>, F9: Into<Option<Vec<u8>>>,

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

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

Trait Implementations

impl Clone for ColumnChunk

fn clone(&self) -> ColumnChunk

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnChunk

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

Formats the value using the given formatter.

impl Hash for ColumnChunk

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 ColumnChunk

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

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

fn partial_cmp(&self, other: &ColumnChunk) -> 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 ReadThrift for ColumnChunk

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

impl Eq for ColumnChunk

impl StructuralPartialEq for ColumnChunk