Struct parquet::file::page_index::index::PageIndex

pub struct PageIndex<T> {
    pub min: Option<T>,
    pub max: Option<T>,
    pub null_count: Option<i64>,
}

PageIndex Statistics for one data page, as described in Column Index.

One significant difference from the row group level Statistics is that page level statistics may not store actual column values as min and max (e.g. they may store truncated strings to save space)

Fields

min: Option<T>

The minimum value, It is None when all values are null

max: Option<T>

The maximum value, It is None when all values are null

null_count: Option<i64>

Null values in the page

Implementations

impl<T> PageIndex<T>

pub fn min(&self) -> Option<&T>

pub fn max(&self) -> Option<&T>

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

Trait Implementations

impl<T: Clone> Clone for PageIndex<T>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for PageIndex<T>

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

Formats the value using the given formatter.

impl<T: Hash> Hash for PageIndex<T>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: PartialEq> PartialEq for PageIndex<T>

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

This method tests for self and other values to be equal, and is used by ==.

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

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

impl<T: Eq> Eq for PageIndex<T>

impl<T> StructuralPartialEq for PageIndex<T>