Struct parquet::file::metadata::RowGroupMetaData

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pub struct RowGroupMetaData { /* private fields */ }
Expand description

Metadata for a row group.

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impl RowGroupMetaData

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pub fn builder(schema_descr: SchemaDescPtr) -> RowGroupMetaDataBuilder

Returns builder for row group metadata.

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pub fn num_columns(&self) -> usize

Number of columns in this row group.

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pub fn column(&self, i: usize) -> &ColumnChunkMetaData

Returns column chunk metadata for ith column.

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pub fn columns(&self) -> &[ColumnChunkMetaData]

Returns slice of column chunk metadata.

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pub fn num_rows(&self) -> i64

Number of rows in this row group.

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pub fn sorting_columns(&self) -> Option<&Vec<SortingColumn>>

Returns the sort ordering of the rows in this RowGroup if any

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pub fn total_byte_size(&self) -> i64

Total byte size of all uncompressed column data in this row group.

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pub fn compressed_size(&self) -> i64

Total size of all compressed column data in this row group.

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pub fn schema_descr(&self) -> &SchemaDescriptor

Returns reference to a schema descriptor.

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pub fn schema_descr_ptr(&self) -> SchemaDescPtr

Returns reference counted clone of schema descriptor.

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pub fn ordinal(&self) -> Option<i16>

Returns ordinal of this row group in file

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pub fn file_offset(&self) -> Option<i64>

Returns file offset of this row group in file.

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pub fn from_thrift( schema_descr: SchemaDescPtr, rg: RowGroup, ) -> Result<RowGroupMetaData>

Method to convert from Thrift.

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pub fn to_thrift(&self) -> RowGroup

Method to convert to Thrift.

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pub fn into_builder(self) -> RowGroupMetaDataBuilder

Trait Implementations§

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impl Clone for RowGroupMetaData

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fn clone(&self) -> RowGroupMetaData

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for RowGroupMetaData

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for RowGroupMetaData

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fn eq(&self, other: &RowGroupMetaData) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for RowGroupMetaData

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> Allocation for T
where T: RefUnwindSafe + Send + Sync,