ditto::StoreObserver Class Reference

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().