Struct ArrowArrayStreamReader
pub struct ArrowArrayStreamReader {
stream: FFI_ArrowArrayStream,
schema: Arc<Schema>,
}
Expand description
A RecordBatchReader
which imports Arrays from FFI_ArrowArrayStream
.
Struct used to fetch RecordBatch
from the C Stream Interface.
Its main responsibility is to expose RecordBatchReader
functionality
that requires FFI_ArrowArrayStream.
Fields§
§stream: FFI_ArrowArrayStream
§schema: Arc<Schema>
Implementations§
§impl ArrowArrayStreamReader
impl ArrowArrayStreamReader
pub fn try_new(
stream: FFI_ArrowArrayStream,
) -> Result<ArrowArrayStreamReader, ArrowError>
pub fn try_new( stream: FFI_ArrowArrayStream, ) -> Result<ArrowArrayStreamReader, ArrowError>
Creates a new ArrowArrayStreamReader
from a FFI_ArrowArrayStream
.
This is used to import from the C Stream Interface.
pub unsafe fn from_raw(
raw_stream: *mut FFI_ArrowArrayStream,
) -> Result<ArrowArrayStreamReader, ArrowError>
pub unsafe fn from_raw( raw_stream: *mut FFI_ArrowArrayStream, ) -> Result<ArrowArrayStreamReader, ArrowError>
Creates a new ArrowArrayStreamReader
from a raw pointer of FFI_ArrowArrayStream
.
Assumes that the pointer represents valid C Stream Interfaces. This function copies the content from the raw pointer and cleans up it to prevent double-dropping. The caller is responsible for freeing up the memory allocated for the pointer.
§Safety
Trait Implementations§
§impl Debug for ArrowArrayStreamReader
impl Debug for ArrowArrayStreamReader
Source§impl FromPyArrow for ArrowArrayStreamReader
Supports conversion from pyarrow.RecordBatchReader
to ArrowArrayStreamReader.
impl FromPyArrow for ArrowArrayStreamReader
Supports conversion from pyarrow.RecordBatchReader
to ArrowArrayStreamReader.
Source§fn from_pyarrow_bound(value: &Bound<'_, PyAny>) -> PyResult<Self>
fn from_pyarrow_bound(value: &Bound<'_, PyAny>) -> PyResult<Self>
Source§impl IntoPyArrow for ArrowArrayStreamReader
Convert a ArrowArrayStreamReader
into a pyarrow.RecordBatchReader
.
impl IntoPyArrow for ArrowArrayStreamReader
Convert a ArrowArrayStreamReader
into a pyarrow.RecordBatchReader
.
Source§fn into_pyarrow(self, py: Python<'_>) -> PyResult<PyObject>
fn into_pyarrow(self, py: Python<'_>) -> PyResult<PyObject>
§impl Iterator for ArrowArrayStreamReader
impl Iterator for ArrowArrayStreamReader
§type Item = Result<RecordBatch, ArrowError>
type Item = Result<RecordBatch, ArrowError>
§fn next(&mut self) -> Option<<ArrowArrayStreamReader as Iterator>::Item>
fn next(&mut self) -> Option<<ArrowArrayStreamReader as Iterator>::Item>
Source§fn next_chunk<const N: usize>(
&mut self,
) -> Result<[Self::Item; N], IntoIter<Self::Item, N>>where
Self: Sized,
fn next_chunk<const N: usize>(
&mut self,
) -> Result<[Self::Item; N], IntoIter<Self::Item, N>>where
Self: Sized,
iter_next_chunk
)N
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fn advance_by(&mut self, n: usize) -> Result<(), NonZero<usize>>
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fn nth(&mut self, n: usize) -> Option<Self::Item>
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