Struct qualia::Store

pub struct Store { /* fields omitted */ }

A set of objects stored on disk.

Implementations

impl Store

pub fn open(path: impl AsRef<Path>) -> Result<Store>

Open a store at the given path.

pub fn all(&self) -> Collection<'_>

Get a Collection of all objects.

pub fn query(&self, query: impl Into<QueryNode>) -> Collection<'_>

Get a Collection of the objects matching the given query.

This can take either a QueryNode or QueryBuilder; you almost certainly want to use the latter.

pub fn checkpoint(&mut self) -> Result<Checkpoint<'_>>

Start a Checkpoint on the store. All modifications must be done through a checkpoint.

This method takes a mutable reference to ensure that only one checkpoint can be active at a given time.

pub fn undo(&mut self) -> Result<Option<String>>

Undo all changes in the last checkpoint.

Returns the description of the undone checkpoint, if any. If no checkpoints exists, returns None.