Struct SimpleDatabase 

pub struct SimpleDatabase { /* private fields */ }

A simple in-memory query database implementation.

Implementations

impl SimpleDatabase

pub fn new() -> Self

Create a new empty database.

Trait Implementations

impl Default for SimpleDatabase

fn default() -> Self

Returns the “default value” for a type.

impl QueryDatabase for SimpleDatabase

fn current_revision(&self) -> Revision

Get the current revision of the database.

fn increment_revision(&self) -> Revision

Increment the revision (called when inputs change).

fn mark_in_progress(&self, id: QueryId)

Mark a query as in-progress (for cycle detection).

fn unmark_in_progress(&self, id: QueryId)

Unmark a query as in-progress.

fn is_in_progress(&self, id: QueryId) -> bool

Check if a query is in progress (cycle detection).

fn record_dependency(&self, from: QueryId, to: QueryId)

Record a dependency from the current query to another.