Struct MemFactPerspective 

pub struct MemFactPerspective { /* private fields */ }

Trait Implementations

impl Debug for MemFactPerspective

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

Formats the value using the given formatter.

impl Query for MemFactPerspective

type QueryIterator = Box<dyn Iterator<Item = Result<Fact, StorageError>>>

Iterator for Query::query_prefix.

fn query( &self, name: &str, keys: &[Box<[u8]>], ) -> Result<Option<Box<[u8]>>, StorageError>

Look up a named fact by an exact match of the compound key.

fn query_prefix( &self, name: &str, prefix: &[Box<[u8]>], ) -> Result<Self::QueryIterator, StorageError>

Look up all named facts that begin with the prefix of keys, in sorted key order.

impl QueryMut for MemFactPerspective

fn insert(&mut self, name: String, keys: Keys, value: Box<[u8]>)

Insert a fact labeled by a name, with a given compound key and a value.

fn delete(&mut self, name: String, keys: Keys)

Delete any fact associated to the compound key, under the given name.

impl FactPerspective for MemFactPerspective