Struct parquet2::read::ColumnIterator
source · [−]Expand description
A MutStreamingIterator that reads column chunks one by one,
returning a PageIterator per column.
Implementations
sourceimpl<R: Read + Seek> ColumnIterator<R>
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
sourceimpl<R: Read + Seek> ColumnChunkIter<PageIterator<R>> for ColumnIterator<R>
impl<R: Read + Seek> ColumnChunkIter<PageIterator<R>> for ColumnIterator<R>
sourcefn field(&self) -> &ParquetType
fn field(&self) -> &ParquetType
The field associated to the set of column chunks this iterator iterates over.
sourceimpl<R: Read + Seek> MutStreamingIterator for ColumnIterator<R>
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>
Auto Trait Implementations
impl<R> !RefUnwindSafe for ColumnIterator<R>
impl<R> Send for ColumnIterator<R> where
R: Send,
impl<R> Sync for ColumnIterator<R> where
R: Sync,
impl<R> Unpin for ColumnIterator<R> where
R: Unpin,
impl<R> !UnwindSafe for ColumnIterator<R>
Blanket Implementations
sourceimpl<T> BorrowMut<T> for T where
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized,
const: unstable · sourcefn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more