Struct parquet2::read::ColumnIterator

pub struct ColumnIterator<R: Read + Seek> { /* private fields */ }

A MutStreamingIterator that reads column chunks one by one, returning a PageIterator per column.

Implementations

impl<R: Read + Seek> ColumnIterator<R>

pub fn new(
    reader: R,
    field: ParquetType,
    columns: Vec<ColumnChunkMetaData>,
    page_filter: Option<PageFilter>,
    page_buffer: Vec<u8>
) -> Self

Trait Implementations

impl<R: Read + Seek> ColumnChunkIter<PageIterator<R>> for ColumnIterator<R>

fn field(&self) -> &ParquetType

The field associated to the set of column chunks this iterator iterates over.

impl<R: Read + Seek> MutStreamingIterator for ColumnIterator<R>

type Item = (PageIterator<R>, ColumnChunkMetaData)

type Error = ParquetError

fn advance(self) -> Result<State<Self>>

fn get(&mut self) -> Option<&mut Self::Item>