Enum FrameBound

pub enum FrameBound<T> {
    UnboundedPreceding,
    Preceding(T),
    CurrentRow,
    Following(T),
    UnboundedFollowing,
}

Variants

UnboundedPreceding

Preceding(T)

CurrentRow

Following(T)

UnboundedFollowing

Implementations

impl<T> FrameBound<T>

pub fn is_unbounded_preceding(&self) -> bool

Returns true if this is a FrameBound::UnboundedPreceding, otherwise false

pub fn is_preceding(&self) -> bool

Returns true if this is a FrameBound::Preceding, otherwise false

pub fn as_preceding_mut(&mut self) -> Option<&mut T>

Optionally returns mutable references to the inner fields if this is a FrameBound::Preceding, otherwise None

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

Optionally returns references to the inner fields if this is a FrameBound::Preceding, otherwise None

pub fn into_preceding(self) -> Result<T, Self>

Returns the inner fields if this is a FrameBound::Preceding, otherwise returns back the enum in the Err case of the result

pub fn is_current_row(&self) -> bool

Returns true if this is a FrameBound::CurrentRow, otherwise false

pub fn is_following(&self) -> bool

Returns true if this is a FrameBound::Following, otherwise false

pub fn as_following_mut(&mut self) -> Option<&mut T>

Optionally returns mutable references to the inner fields if this is a FrameBound::Following, otherwise None

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

Optionally returns references to the inner fields if this is a FrameBound::Following, otherwise None

pub fn into_following(self) -> Result<T, Self>

Returns the inner fields if this is a FrameBound::Following, otherwise returns back the enum in the Err case of the result

pub fn is_unbounded_following(&self) -> bool

Returns true if this is a FrameBound::UnboundedFollowing, otherwise false

impl<T> FrameBound<T>

fn offset_value(&self) -> Option<&T>

pub(super) fn validate_bounds( start: &Self, end: &Self, offset_checker: impl Fn(&T) -> Result<()>, ) -> Result<()>

pub fn map<U>(self, f: impl Fn(T) -> U) -> FrameBound<U>

impl<T> FrameBound<T>

where T: Copy,

pub(super) fn reverse(self) -> FrameBound<T>

impl FrameBound<usize>

pub(super) fn from_protobuf_legacy(bound: &PbBound) -> Result<Self>

fn from_protobuf(bound: &PbRowsFrameBound) -> Result<Self>

fn to_protobuf(&self) -> PbRowsFrameBound

impl FrameBound<usize>

pub fn to_offset(&self) -> Option<isize>

Convert the bound to sized offset from current row. None if the bound is unbounded.

impl FrameBound<RangeFrameOffset>

fn from_protobuf( bound: &PbRangeFrameBound, order_data_type: &DataType, offset_data_type: &DataType, ) -> Result<Self>

fn to_protobuf(&self) -> PbRangeFrameBound

impl FrameBound<RangeFrameOffset>

fn for_display(&self) -> FrameBound<String>

fn for_calc(&self) -> FrameBound<RangeFrameOffsetRef<'_>>

impl FrameBound<RangeFrameOffsetRef<'_>>

fn bound_of( self, order_value: impl ToOwnedDatum, order_type: OrderType, ) -> Sentinelled<Datum>

Trait Implementations

impl<T: Clone> Clone for FrameBound<T>

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

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for FrameBound<T>

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

Formats the value using the given formatter.

impl<T> Display for FrameBound<T>

where T: Display,

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

Formats the value using the given formatter.

impl<T: Hash> Hash for FrameBound<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 FrameBound<T>

fn eq(&self, other: &FrameBound<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: Eq> Eq for FrameBound<T>

impl<T> StructuralPartialEq for FrameBound<T>