pub struct ParquetObjectStore { /* private fields */ }Implementations§
Source§impl ParquetObjectStore
impl ParquetObjectStore
pub async fn from_uri( uri: PlRefPath, 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.
Sourcepub async fn num_rows_only(&mut self) -> Result<i64, PolarsError>
pub async fn num_rows_only(&mut self) -> Result<i64, PolarsError>
Decode only FileMetaData.num_rows from the remote footer.
Not memoized. Used by RowCounts resolve mode.
pub async fn schema( &mut self, ) -> Result<Arc<Schema<Field, BTreeMap<PlSmallStr, PlSmallStr>>>, PolarsError>
Auto Trait Implementations§
impl !RefUnwindSafe for ParquetObjectStore
impl !UnwindSafe for ParquetObjectStore
impl Freeze for ParquetObjectStore
impl Send for ParquetObjectStore
impl Sync for ParquetObjectStore
impl Unpin for ParquetObjectStore
impl UnsafeUnpin for ParquetObjectStore
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Source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
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fn borrow_mut(&mut self) -> &mut T
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impl<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
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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>
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