Trait Request 

pub trait Request {
    // Required methods
    fn result(&self) -> Result<JsValue, Error>;
    fn error(&self) -> Result<Option<DomException>, Error>;
    fn source(&self) -> Result<Object, Error>;
    fn transaction(&self) -> Option<Transaction>;
    fn ready_state(&self) -> Result<RequestReadyState, Error>;
    fn on_success<F>(&mut self, callback: F)
       where F: FnOnce(Event) + 'static;
    fn on_error<F>(&mut self, callback: F)
       where F: FnOnce(Event) + 'static;
}

Specifies all the functions supported by request objects.

Required Methods

fn result(&self) -> Result<JsValue, Error>

When a request is completed, returns the result, or undefined if the request failed. Returns an Error if the request is still pending.

fn error(&self) -> Result<Option<DomException>, Error>

When a request is completed, returns the error (a DOMException), or None if the request succeeded. Returns an Error if the request is still pending.

fn source(&self) -> Result<Object, Error>

Returns the ObjectStore, Index, or Cursor the request was made against, or null if it was an open request.

fn transaction(&self) -> Option<Transaction>

Returns the Transaction the request was made within. If this as an open request, then it returns an upgrade transaction while it is running, or None otherwise.

fn ready_state(&self) -> Result<RequestReadyState, Error>

Returns RequestReadyState::Pending until a request is complete, then returns RequestReadyState::Done.

fn on_success<F>(&mut self, callback: F)

where F: FnOnce(Event) + 'static,

Adds an event handler for success event.

fn on_error<F>(&mut self, callback: F)

where F: FnOnce(Event) + 'static,

Adds an event handler for error event.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl Request for DatabaseRequest

impl Request for StoreRequest