Enum Layer 

pub enum Layer {
    Sources,
    Records,
    Wiki,
}

The three canonical layers of a db.md store.

Ord/PartialOrd are derived (additively) because sibling modules key BTreeMaps on Layer (e.g. stats::Stats::files_per_layer); the canonical declaration order (Sources < Records < Wiki) is the sort order.

Variants

Sources

sources/ — raw evidence; immutable; date-sharded at scale.

Records

records/ — atomic typed data; entity types flat, event types sharded.

Wiki

wiki/ — curator-synthesized narrative; flat.

Implementations

impl Layer

pub fn dir_name(self) -> &'static str

The on-disk folder name for this layer ("sources" / "records" / "wiki").

pub fn from_dir_name(name: &str) -> Option<Self>

Parse a layer from its folder name; None for anything else.

pub fn all() -> [Layer; 3]

Every layer, in canonical order.

Trait Implementations

impl Clone for Layer

fn clone(&self) -> Layer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Layer

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

Formats the value using the given formatter.

impl Hash for Layer

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 Ord for Layer

fn cmp(&self, other: &Layer) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Layer

fn eq(&self, other: &Layer) -> 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 PartialOrd for Layer

fn partial_cmp(&self, other: &Layer) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Layer

impl Eq for Layer

impl StructuralPartialEq for Layer