Struct parquet::file::metadata::RowGroupMetaData

pub struct RowGroupMetaData { /* private fields */ }

Metadata for a row group.

Implementations

impl RowGroupMetaData

pub fn builder(schema_descr: SchemaDescPtr) -> RowGroupMetaDataBuilder

Returns builder for row group metadata.

pub fn num_columns(&self) -> usize

Number of columns in this row group.

pub fn column(&self, i: usize) -> &ColumnChunkMetaData

Returns column chunk metadata for ith column.

pub fn columns(&self) -> &[ColumnChunkMetaData]

Returns slice of column chunk metadata.

pub fn num_rows(&self) -> i64

Number of rows in this row group.

pub fn sorting_columns(&self) -> Option<&Vec<SortingColumn>>

Returns the sort ordering of the rows in this RowGroup if any

pub fn total_byte_size(&self) -> i64

Total byte size of all uncompressed column data in this row group.

pub fn compressed_size(&self) -> i64

Total size of all compressed column data in this row group.

pub fn schema_descr(&self) -> &SchemaDescriptor

Returns reference to a schema descriptor.

pub fn schema_descr_ptr(&self) -> SchemaDescPtr

Returns reference counted clone of schema descriptor.

pub fn ordinal(&self) -> Option<i16>

Returns ordinal of this row group in file

pub fn file_offset(&self) -> Option<i64>

Returns file offset of this row group in file.

pub fn from_thrift( schema_descr: SchemaDescPtr, rg: RowGroup ) -> Result<RowGroupMetaData>

Method to convert from Thrift.

pub fn to_thrift(&self) -> RowGroup

Method to convert to Thrift.

pub fn into_builder(self) -> RowGroupMetaDataBuilder

Converts this RowGroupMetaData into a RowGroupMetaDataBuilder

Trait Implementations

impl Clone for RowGroupMetaData

fn clone(&self) -> RowGroupMetaData

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RowGroupMetaData

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

Formats the value using the given formatter.

impl PartialEq for RowGroupMetaData

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