Struct PrimitiveColumnIndex 

pub struct PrimitiveColumnIndex<T> {
    pub(crate) column_index: ColumnIndex,
    pub(crate) min_values: Vec<T>,
    pub(crate) max_values: Vec<T>,
}

Column index for primitive types

Fields

column_index: ColumnIndex

min_values: Vec<T>

max_values: Vec<T>

Implementations

impl<T: ParquetValueType> PrimitiveColumnIndex<T>

pub(crate) fn try_new( null_pages: Vec<bool>, boundary_order: BoundaryOrder, null_counts: Option<Vec<i64>>, repetition_level_histograms: Option<Vec<i64>>, definition_level_histograms: Option<Vec<i64>>, min_bytes: Vec<&[u8]>, max_bytes: Vec<&[u8]>, ) -> Result<Self>

pub(super) fn try_from_thrift(index: ThriftColumnIndex<'_>) -> Result<Self>

impl<T> PrimitiveColumnIndex<T>

pub fn min_values(&self) -> &[T]

Returns an array containing the min values for each page.

Values in the returned slice are only valid if ColumnIndex::is_null_page() is false for the same index.

pub fn max_values(&self) -> &[T]

Returns an array containing the max values for each page.

Values in the returned slice are only valid if ColumnIndex::is_null_page() is false for the same index.

pub fn min_values_iter(&self) -> impl Iterator<Item = Option<&T>>

Returns an iterator over the min values.

Values may be None when ColumnIndex::is_null_page() is true.

pub fn max_values_iter(&self) -> impl Iterator<Item = Option<&T>>

Returns an iterator over the max values.

Values may be None when ColumnIndex::is_null_page() is true.

pub fn min_value(&self, idx: usize) -> Option<&T>

Returns the min value for the page indexed by idx

It is None when all values are null

pub fn max_value(&self, idx: usize) -> Option<&T>

Returns the max value for the page indexed by idx

It is None when all values are null

Methods from Deref<Target = ColumnIndex>

pub fn num_pages(&self) -> u64

Returns the number of pages

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

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

Returns the repetition level histogram for the page indexed by idx

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

Returns the definition level histogram for the page indexed by idx

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

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

Trait Implementations

impl<T: Clone> Clone for PrimitiveColumnIndex<T>

fn clone(&self) -> PrimitiveColumnIndex<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug> Debug for PrimitiveColumnIndex<T>

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

Formats the value using the given formatter.

impl<T> Deref for PrimitiveColumnIndex<T>

type Target = ColumnIndex

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl<T: ParquetValueType> HeapSize for PrimitiveColumnIndex<T>

fn heap_size(&self) -> usize

Return the size of any bytes allocated on the heap by this object, including heap memory in those structures

impl<T: PartialEq> PartialEq for PrimitiveColumnIndex<T>

fn eq(&self, other: &PrimitiveColumnIndex<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl<T: ParquetValueType> WriteThrift for PrimitiveColumnIndex<T>

const ELEMENT_TYPE: ElementType = ElementType::Struct

The ElementType to use when a list of this object is written.

fn write_thrift<W: Write>( &self, writer: &mut ThriftCompactOutputProtocol<W>, ) -> Result<()>

Serialize this object to the given writer.

impl<T> StructuralPartialEq for PrimitiveColumnIndex<T>