[−][src]Struct parquet::file::metadata::RowGroupMetaData
Metadata for a row group.
Methods
impl RowGroupMetaData
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impl RowGroupMetaData
pub fn builder(schema_descr: SchemaDescPtr) -> RowGroupMetaDataBuilder
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pub fn builder(schema_descr: SchemaDescPtr) -> RowGroupMetaDataBuilder
Returns builer for row group metadata.
pub fn num_columns(&self) -> usize
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pub fn num_columns(&self) -> usize
Number of columns in this row group.
pub fn column(&self, i: usize) -> &ColumnChunkMetaData
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pub fn column(&self, i: usize) -> &ColumnChunkMetaData
Returns column chunk metadata for i
th column.
pub fn columns(&self) -> &[ColumnChunkMetaDataPtr]
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pub fn columns(&self) -> &[ColumnChunkMetaDataPtr]
Returns slice of column chunk metadata Rc
pointers.
pub fn num_rows(&self) -> i64
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pub fn num_rows(&self) -> i64
Number of rows in this row group.
pub fn total_byte_size(&self) -> i64
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pub fn total_byte_size(&self) -> i64
Total byte size of all uncompressed column data in this row group.
pub fn schema_descr(&self) -> &SchemaDescriptor
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pub fn schema_descr(&self) -> &SchemaDescriptor
Returns reference to a schema descriptor.
pub fn schema_descr_ptr(&self) -> SchemaDescPtr
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pub fn schema_descr_ptr(&self) -> SchemaDescPtr
Returns reference counted clone of schema descriptor.
pub fn from_thrift(
schema_descr: SchemaDescPtr,
rg: RowGroup
) -> Result<RowGroupMetaData>
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pub fn from_thrift(
schema_descr: SchemaDescPtr,
rg: RowGroup
) -> Result<RowGroupMetaData>
Method to convert from Thrift.
pub fn to_thrift(&self) -> RowGroup
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pub fn to_thrift(&self) -> RowGroup
Method to convert to Thrift.
Auto Trait Implementations
impl !Send for RowGroupMetaData
impl !Send for RowGroupMetaData
impl !Sync for RowGroupMetaData
impl !Sync for RowGroupMetaData
Blanket Implementations
impl<T, U> Into for T where
U: From<T>,
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impl<T, U> Into for T where
U: From<T>,
impl<T> From for T
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impl<T> From for T
impl<T, U> TryFrom for T where
T: From<U>,
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impl<T, U> TryFrom for T where
T: From<U>,
type Error = !
🔬 This is a nightly-only experimental API. (
try_from
)The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
impl<T> Borrow for T where
T: ?Sized,
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impl<T> Borrow for T where
T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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impl<T> Any for T where
T: 'static + ?Sized,
fn get_type_id(&self) -> TypeId
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fn get_type_id(&self) -> TypeId
impl<T, U> TryInto for T where
U: TryFrom<T>,
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impl<T, U> TryInto for T where
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
🔬 This is a nightly-only experimental API. (
try_from
)The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
impl<T> BorrowMut for T where
T: ?Sized,
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impl<T> BorrowMut for T where
T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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fn borrow_mut(&mut self) -> &mut T
impl<E> SpecializationError for E
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impl<E> SpecializationError for E
impl<T> Erased for T
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impl<T> Erased for T
impl<T> Send for T where
T: ?Sized,
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impl<T> Send for T where
T: ?Sized,
impl<T> Sync for T where
T: ?Sized,
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impl<T> Sync for T where
T: ?Sized,
impl<T> Erased for T
impl<T> Erased for T
impl<T, U> TryInto for T where
U: TryFrom<T>,
impl<T, U> TryInto for T where
U: TryFrom<T>,