ColumnIndexMetaData

Enum ColumnIndexMetaData 

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pub enum ColumnIndexMetaData {
    NONE,
    BOOLEAN(PrimitiveColumnIndex<bool>),
    INT32(PrimitiveColumnIndex<i32>),
    INT64(PrimitiveColumnIndex<i64>),
    INT96(PrimitiveColumnIndex<Int96>),
    FLOAT(PrimitiveColumnIndex<f32>),
    DOUBLE(PrimitiveColumnIndex<f64>),
    BYTE_ARRAY(ByteArrayColumnIndex),
    FIXED_LEN_BYTE_ARRAY(ByteArrayColumnIndex),
}
Expand description

Parsed ColumnIndex information for a Parquet file.

See ParquetColumnIndex for more information.

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NONE

Sometimes reading page index from parquet file will only return pageLocations without min_max index, NONE represents this lack of index information

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BOOLEAN(PrimitiveColumnIndex<bool>)

Boolean type index

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INT32(PrimitiveColumnIndex<i32>)

32-bit integer type index

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INT64(PrimitiveColumnIndex<i64>)

64-bit integer type index

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INT96(PrimitiveColumnIndex<Int96>)

96-bit integer type (timestamp) index

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FLOAT(PrimitiveColumnIndex<f32>)

32-bit floating point type index

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DOUBLE(PrimitiveColumnIndex<f64>)

64-bit floating point type index

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BYTE_ARRAY(ByteArrayColumnIndex)

Byte array type index

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FIXED_LEN_BYTE_ARRAY(ByteArrayColumnIndex)

Fixed length byte array type index

Implementations§

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impl ColumnIndexMetaData

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pub fn is_sorted(&self) -> bool

Return min/max elements inside ColumnIndex are ordered or not.

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pub fn get_boundary_order(&self) -> Option<BoundaryOrder>

Get boundary_order of this page index.

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pub fn null_counts(&self) -> Option<&Vec<i64>>

Returns array of null counts, one per page.

Returns None if now null counts have been set in the index

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pub fn num_pages(&self) -> u64

Returns the number of pages

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pub fn null_count(&self, idx: usize) -> Option<i64>

Returns the number of null values in the page indexed by idx

Returns None if no null counts have been set in the index

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pub fn repetition_level_histogram(&self, idx: usize) -> Option<&[i64]>

Returns the repetition level histogram for the page indexed by idx

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pub fn definition_level_histogram(&self, idx: usize) -> Option<&[i64]>

Returns the definition level histogram for the page indexed by idx

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pub fn is_null_page(&self, idx: usize) -> bool

Returns whether the page indexed by idx consists of all null values

Trait Implementations§

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impl Clone for ColumnIndexMetaData

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fn clone(&self) -> ColumnIndexMetaData

Returns a duplicate 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 ColumnIndexMetaData

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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 HeapSize for ColumnIndexMetaData

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fn heap_size(&self) -> usize

Return the size of any bytes allocated on the heap by this object, including heap memory in those structures Read more
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impl PartialEq for ColumnIndexMetaData

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fn eq(&self, other: &ColumnIndexMetaData) -> 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 WriteThrift for ColumnIndexMetaData

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const ELEMENT_TYPE: ElementType = ElementType::Struct

The ElementType to use when a list of this object is written.
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fn write_thrift<W: Write>( &self, writer: &mut ThriftCompactOutputProtocol<W>, ) -> Result<()>

Serialize this object to the given writer.
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impl StructuralPartialEq for ColumnIndexMetaData

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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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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> IntoEither for T

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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> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

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
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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,

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where T: 'static,

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