Struct MemoryObjectSpace 

pub struct MemoryObjectSpace { /* private fields */ }

A unit of work over a MemoryDatabase.

Trait Implementations

impl Debug for MemoryObjectSpace

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

Formats the value using the given formatter.

impl ObjectSpace for MemoryObjectSpace

fn entities(&self) -> Vec<EntityInfo>

The entities it knows.

fn query(&self, entity: &str, query: &Query) -> Result<Vec<Object>, SpaceError>

Reads records.

fn find(&self, entity: &str, key: &Value) -> Result<Option<Object>, SpaceError>

Reads one record by its key.

fn new_object(&mut self, entity: &str) -> Result<Object, SpaceError>

A record with what a new one starts with, kept only once saved.

fn save(&mut self, object: Object) -> Result<(), SpaceError>

Marks a record as new or changed, by its key.

fn insert(&mut self, object: Object) -> Result<(), SpaceError>

Marks a record as new, refusing a key already in use, as a form creating a record has to: it must not take over the record with that key.

fn delete(&mut self, entity: &str, key: &Value) -> Result<(), SpaceError>

Marks a record to go away.

fn changes(&self) -> Vec<Change>

What waits for a commit.

fn commit(&mut self) -> Result<(), SpaceError>

Keeps every change, or none of them.

fn rollback(&mut self)

Throws away every change.

fn on_event(&mut self, watcher: SpaceWatcher)

Calls this when something happens to the space.

fn is_modified(&self) -> bool

Whether anything waits for a commit.

fn refresh(&mut self)

Throws away every change and reads again from storage.