Enum HandlerIndexDirection 

pub enum HandlerIndexDirection {
    First,
    Next,
    Prev,
    Last,
}

The traversal direction of an indexed HANDLER … READ <index> { FIRST | NEXT | PREV | LAST } (HandlerReadSelector::Index) — the handler_rkey_function set, which adds PREV/LAST over HandlerScanDirection. A surface tag (no meta).

Variants

First

FIRST — the first row by the index’s key order.

Next

NEXT — the next row in index order.

Prev

PREV — the previous row in index order.

Last

LAST — the last row by the index’s key order.

Trait Implementations

impl Clone for HandlerIndexDirection

fn clone(&self) -> HandlerIndexDirection

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for HandlerIndexDirection

impl Debug for HandlerIndexDirection

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for HandlerIndexDirection

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for HandlerIndexDirection

impl Hash for HandlerIndexDirection

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 PartialEq for HandlerIndexDirection

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for HandlerIndexDirection

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for HandlerIndexDirection