Enum QueryAdmissionAccessKind 

pub enum QueryAdmissionAccessKind {
    Unknown,
    ByKey,
    ByKeys,
    KeyRange,
    IndexPrefix,
    IndexMultiLookup,
    IndexBranchSet,
    IndexRange,
    FullScan,
    Union,
    Intersection,
}

Coarse selected access-path class used by admission and EXPLAIN.

Variants

Unknown

Access class has not been summarized yet.

ByKey

Direct primary-key lookup.

ByKeys

Multiple direct primary-key lookups.

KeyRange

Primary-key range access.

IndexPrefix

Secondary-index prefix access.

IndexMultiLookup

Secondary-index multi-lookup access.

IndexBranchSet

Secondary-index branch-set access.

IndexRange

Secondary-index range access.

FullScan

Full entity scan.

Union

Union of multiple access paths.

Intersection

Intersection of multiple access paths.

Implementations

impl QueryAdmissionAccessKind

pub const fn as_str(self) -> &'static str

Return a stable lowercase diagnostic label for this access class.

pub const fn is_secondary_index(self) -> bool

Return whether this access class is backed by a secondary index.

pub const fn is_full_scan(self) -> bool

Return whether this access class is a full entity scan.

Trait Implementations

impl Clone for QueryAdmissionAccessKind

fn clone(&self) -> QueryAdmissionAccessKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for QueryAdmissionAccessKind

impl Debug for QueryAdmissionAccessKind

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

Formats the value using the given formatter.

impl Eq for QueryAdmissionAccessKind

impl PartialEq for QueryAdmissionAccessKind

fn eq(&self, other: &QueryAdmissionAccessKind) -> 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 StructuralPartialEq for QueryAdmissionAccessKind