Request

idb_sys

Trait Request 

Source 
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;
}
Expand description

Specifies all the functions supported by request objects.

Required Methods§

Source

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.

Source

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.

Source

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.

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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.

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

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

Source

fn on_success<F>(&mut self, callback: F)
where F: FnOnce(Event) + 'static,

Adds an event handler for success event.

Source

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", so this trait is not object safe.

Implementors§