Struct KnowledgeSnapshot 

pub struct KnowledgeSnapshot {
    pub actors: BTreeMap<PersonId, ActorKnowledge>,
    pub records: BTreeMap<KnowledgeHolderRef, BTreeMap<KnowledgeRecordId, KnowledgeRecord>>,
}

Fields

actors: BTreeMap<PersonId, ActorKnowledge>

records: BTreeMap<KnowledgeHolderRef, BTreeMap<KnowledgeRecordId, KnowledgeRecord>>

Implementations

impl KnowledgeSnapshot

pub fn record_count_in_namespace(&self, namespace: &str) -> usize

Counts all retained holder-relative records in one schema namespace.

pub fn for_actor(&self, actor: PersonId) -> Option<&ActorKnowledge>

pub fn for_holder( &self, holder: &KnowledgeHolderRef, ) -> Option<&BTreeMap<KnowledgeRecordId, KnowledgeRecord>>

pub fn query( &self, holder: KnowledgeHolderRef, query: &KnowledgeQuery, read_cut: KnowledgeReadCut, ) -> Result<KnowledgeQueryResult, KnowledgeQueryError>

Returns one deterministic holder-facing page at the supplied read cut.

Errors

Returns the same validation errors as GenericKnowledgeLedger::query.

pub fn query_current( &self, holder: KnowledgeHolderRef, query: &KnowledgeQuery, boundary: Option<BoundaryId>, ) -> Result<KnowledgeQueryResult, KnowledgeQueryError>

Queries the current settled holder projection using an engine-derived read cut. Callers cannot substitute a cross-holder or stale root.

Errors

Returns an error when the holder ledger is inconsistent or the query or cursor does not match the derived read cut.

pub fn query_with_overlay( &self, holder: KnowledgeHolderRef, query: &KnowledgeQuery, boundary: Option<BoundaryId>, overlay: &BTreeMap<KnowledgeHolderRef, BTreeMap<KnowledgeRecordId, KnowledgeRecord>>, ) -> Result<KnowledgeQueryResult, KnowledgeQueryError>

Queries an omniscient system view with a same-boundary holder overlay. The returned values are owned so no mutable runtime ledger is exposed.

Errors

Returns an error when the overlay collides with a settled record ID, when either ledger is inconsistent, or when the query or cursor does not match the derived read cut.

Trait Implementations

impl Clone for KnowledgeSnapshot

fn clone(&self) -> KnowledgeSnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KnowledgeSnapshot

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

Formats the value using the given formatter.

impl Default for KnowledgeSnapshot

fn default() -> KnowledgeSnapshot

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for KnowledgeSnapshot

fn deserialize<__D>( __deserializer: __D, ) -> Result<KnowledgeSnapshot, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for KnowledgeSnapshot

impl PartialEq for KnowledgeSnapshot

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for KnowledgeSnapshot

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for KnowledgeSnapshot