Struct InMemoryMlPersistence 

pub struct InMemoryMlPersistence { /* private fields */ }

Test / default backend. Pure in-memory hashmap keyed by (namespace, key). Cloning the handle shares state.

Implementations

impl InMemoryMlPersistence

pub fn new() -> InMemoryMlPersistence

Trait Implementations

impl Clone for InMemoryMlPersistence

fn clone(&self) -> InMemoryMlPersistence

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InMemoryMlPersistence

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

Formats the value using the given formatter.

impl Default for InMemoryMlPersistence

fn default() -> InMemoryMlPersistence

Returns the “default value” for a type.

impl MlPersistence for InMemoryMlPersistence

fn put( &self, namespace: &str, key: &str, value: &str, ) -> Result<(), MlPersistenceError>

Store value under (namespace, key). Overwrites any existing value.

fn get( &self, namespace: &str, key: &str, ) -> Result<Option<String>, MlPersistenceError>

Fetch the value at (namespace, key), if any.

fn delete(&self, namespace: &str, key: &str) -> Result<(), MlPersistenceError>

Drop the entry at (namespace, key). Returns Ok(()) whether the key existed or not — callers do not distinguish.

fn list( &self, namespace: &str, ) -> Result<Vec<(String, String)>, MlPersistenceError>

Enumerate every (key, value) in namespace. Ordering is implementation-defined. Callers that need deterministic order sort the result themselves.