Struct parquet2::metadata::ColumnChunkMetaData

pub struct ColumnChunkMetaData { /* private fields */ }

Metadata for a column chunk.

Implementations

impl ColumnChunkMetaData

Represents common operations for a column chunk.

pub fn new(column_chunk: ColumnChunk, column_descr: ColumnDescriptor) -> Self

Create a new ColumnChunkMetaData

pub fn file_path(&self) -> &Option<String>

File where the column chunk is stored.

If not set, assumed to belong to the same file as the metadata. This path is relative to the current file.

pub fn file_offset(&self) -> i64

Byte offset in file_path().

pub fn type_(&self) -> &Type

Type of this column. Must be primitive.

pub fn descriptor(&self) -> &ColumnDescriptor

The ColumnDescriptor for this column. This descriptor contains the physical and logical type of the pages.

pub fn physical_type(&self) -> PhysicalType

The ColumnDescriptor for this column. This descriptor contains the physical and logical type of the pages.

pub fn statistics(&self) -> Option<Result<Arc<dyn Statistics>>>

Decodes the raw statistics into a statistics

pub fn num_values(&self) -> i64

Total number of values in this column chunk.

pub fn compression(&self) -> Compression

Compression for this column.

pub fn compressed_size(&self) -> i64

Returns the total compressed data size of this column chunk.

pub fn uncompressed_size(&self) -> i64

Returns the total uncompressed data size of this column chunk.

pub fn data_page_offset(&self) -> i64

Returns the offset for the column data.

pub fn has_index_page(&self) -> bool

Returns true if this column chunk contains a index page, false otherwise.

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

Returns the offset for the index page.

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

Returns the offset for the dictionary page, if any.

pub fn column_encoding(&self) -> &Vec<Encoding>

Returns the encoding for this column

pub fn byte_range(&self) -> (u64, u64)

Returns the offset and length in bytes of the column chunk within the file

pub fn try_from_thrift(
    column_descr: ColumnDescriptor,
    column_chunk: ColumnChunk
) -> Result<Self>

Method to convert from Thrift.

pub fn into_thrift(self) -> ColumnChunk

Method to convert to Thrift.

Trait Implementations

impl Clone for ColumnChunkMetaData

fn clone(&self) -> ColumnChunkMetaData

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnChunkMetaData

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

Formats the value using the given formatter.