Struct GenericKnowledgeLedger 

pub struct GenericKnowledgeLedger {
    pub records: BTreeMap<KnowledgeHolderRef, BTreeMap<KnowledgeRecordId, KnowledgeRecord>>,
}

Holder-relative generic knowledge ledger used by the current snapshot.

Fields

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

Implementations

impl GenericKnowledgeLedger

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

pub fn insert_records( &mut self, holder: KnowledgeHolderRef, records: impl IntoIterator<Item = KnowledgeRecord>, ) -> Result<(), KnowledgeLedgerError>

Atomically appends records after validating holder and global ID invariants.

Errors

Returns KnowledgeLedgerError::HolderMismatch when any record names a different holder, or KnowledgeLedgerError::DuplicateRecordId when an ID already exists anywhere in the ledger or repeats within the batch.

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

Returns one deterministic page from a holder’s ledger at the supplied cut.

Errors

Returns KnowledgeQueryError::InvalidLimit for a zero or oversized page and KnowledgeQueryError::InvalidCursor when a cursor belongs to another holder, query, or ledger position. It returns KnowledgeQueryError::ReadCutUnavailable when the cursor’s committed knowledge or overlay root is no longer the supplied view. It returns KnowledgeQueryError::InvalidLedger for internally inconsistent stored records and KnowledgeQueryError::Encoding if query hashing fails.

Trait Implementations

impl Clone for GenericKnowledgeLedger

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GenericKnowledgeLedger

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

Formats the value using the given formatter.

impl Default for GenericKnowledgeLedger

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for GenericKnowledgeLedger

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for GenericKnowledgeLedger

impl PartialEq for GenericKnowledgeLedger

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for GenericKnowledgeLedger

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 GenericKnowledgeLedger