Struct dittolive_ditto::store::dql::StoreObserver

pub struct StoreObserver { /* private fields */ }

A change observer invokes a change handler whenever results for its query change.

Create an observer by calling Store::register_observer.

Implementations

impl StoreObserver

pub fn cancel(&self)

Cancels the observation. The handler that was passed in when registering this store observer will no longer be called. No-op if this store observer is already cancelled or the owning Ditto object goes out of scope.

pub fn is_cancelled(&self) -> bool

Trait Implementations

impl Drop for StoreObserver

fn drop(&mut self)

Executes the destructor for this type.

impl Hash for StoreObserver

fn hash<H: Hasher>(&self, h: &mut H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where
    H: Hasher,
    Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq<StoreObserver> for StoreObserver

fn eq(&self, other: &Self) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Eq for StoreObserver