pub struct ArrowReaderBuilder<R> { /* private fields */ }Implementations§
source§impl<R> ArrowReaderBuilder<R>
impl<R> ArrowReaderBuilder<R>
pub fn file_metadata(&self) -> &FileMetadata
pub fn with_batch_size(self, batch_size: usize) -> Self
pub fn with_projection(self, projection: ProjectionMask) -> Self
pub fn with_schema(self, schema: SchemaRef) -> Self
sourcepub fn with_file_byte_range(self, range: Range<usize>) -> Self
pub fn with_file_byte_range(self, range: Range<usize>) -> Self
Specifies a range of file bytes that will read the strips offset within this range
sourcepub fn schema(&self) -> SchemaRef
pub fn schema(&self) -> SchemaRef
Returns the currently computed schema
Unless with_schema was called, this is computed dynamically
based on the current projection and the underlying file format.
source§impl<R: ChunkReader> ArrowReaderBuilder<R>
impl<R: ChunkReader> ArrowReaderBuilder<R>
source§impl<R: AsyncChunkReader + 'static> ArrowReaderBuilder<R>
impl<R: AsyncChunkReader + 'static> ArrowReaderBuilder<R>
pub async fn try_new_async(reader: R) -> Result<Self>
pub fn build_async(self) -> ArrowStreamReader<R>
Auto Trait Implementations§
impl<R> Freeze for ArrowReaderBuilder<R>where
R: Freeze,
impl<R> RefUnwindSafe for ArrowReaderBuilder<R>where
R: RefUnwindSafe,
impl<R> Send for ArrowReaderBuilder<R>where
R: Send,
impl<R> Sync for ArrowReaderBuilder<R>where
R: Sync,
impl<R> Unpin for ArrowReaderBuilder<R>where
R: Unpin,
impl<R> UnwindSafe for ArrowReaderBuilder<R>where
R: UnwindSafe,
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
Mutably borrows from an owned value. Read more