Inheritance diagram for ditto::StoreObserver:

Public Member Functions
	StoreObserver (StoreObserver &&)

StoreObserver &	operator= (StoreObserver &&)

void	cancel ()
	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.

bool	is_cancelled ()
	Convenience property, returns `true` if the store observer has been cancelled, otherwise returns `false`. Also, a store observer is considered cancelled if the owning Ditto object goes out of scope.

Detailed Description

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

Create a store observer by calling Store::register_observer().

Public Member Functions