pub struct ParquetObjectStore { /* private fields */ }Implementations§
Source§impl ParquetObjectStore
impl ParquetObjectStore
pub async fn from_uri( uri: &str, options: Option<&CloudOptions>, metadata: Option<Arc<FileMetadata>>, ) -> Result<ParquetObjectStore, PolarsError>
Sourcepub async fn num_rows(&mut self) -> Result<usize, PolarsError>
pub async fn num_rows(&mut self) -> Result<usize, PolarsError>
Number of rows in the parquet file.
Sourcepub async fn get_metadata(&mut self) -> Result<&Arc<FileMetadata>, PolarsError>
pub async fn get_metadata(&mut self) -> Result<&Arc<FileMetadata>, PolarsError>
Fetch and memoize the metadata of the parquet file.
pub async fn schema(&mut self) -> Result<Arc<Schema<Field>>, PolarsError>
Auto Trait Implementations§
impl !Freeze for ParquetObjectStore
impl !RefUnwindSafe for ParquetObjectStore
impl Send for ParquetObjectStore
impl Sync for ParquetObjectStore
impl Unpin for ParquetObjectStore
impl !UnwindSafe for ParquetObjectStore
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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
Source§impl<T> Instrument for T
impl<T> Instrument for T
Source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
Source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
Source§impl<T> IntoEither for T
impl<T> IntoEither for T
Source§fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
fn into_either(self, into_left: bool) -> Either<Self, Self> ⓘ
Converts
self into a Left variant of Either<Self, Self>
if into_left is true.
Converts self into a Right variant of Either<Self, Self>
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self> ⓘ
Converts
self into a Left variant of Either<Self, Self>
if into_left(&self) returns true.
Converts self into a Right variant of Either<Self, Self>
otherwise. Read more