Struct KeyRange 

pub struct KeyRange {
    pub lower: Option<Key>,
    pub upper: Option<Key>,
    pub lower_open: bool,
    pub upper_open: bool,
}

Constrains a query or cursor by lower and upper bounds.

Fields

lower: Option<Key>

Lower bound, inclusive unless lower_open is true.

upper: Option<Key>

Upper bound, inclusive unless upper_open is true.

lower_open: bool

Whether the lower bound is exclusive.

upper_open: bool

Whether the upper bound is exclusive.

Implementations

impl KeyRange

pub fn only(key: impl Into<Key>) -> Self

Returns a range containing only key.

pub fn bound( lower: impl Into<Key>, upper: impl Into<Key>, lower_open: bool, upper_open: bool, ) -> Self

Returns a range between optional lower and upper bounds.

pub fn lower_bound(key: impl Into<Key>, open: bool) -> Self

Returns a range with only a lower bound.

pub fn upper_bound(key: impl Into<Key>, open: bool) -> Self

Returns a range with only an upper bound.

Trait Implementations

impl Clone for KeyRange

fn clone(&self) -> KeyRange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KeyRange

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

Formats the value using the given formatter.

impl From<KeyRange> for Query

fn from(range: KeyRange) -> Self

Converts to this type from the input type.

impl PartialEq for KeyRange

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for KeyRange