Retrieving data from cache¶
This API request retrieves an object from Backendless cache. If object is not present in cache, the method returns null for complex types or default value for primitive values. All methods are available via Backendless.Cache.[methodname]
accessor:
// synchronous method
public <T> T get( String key, Class<? extends T> type );
// asynchronous method
public <T> void get( final String key, final AsyncCallback<T> callback )
where:
Argument | Description |
---|---|
key |
identifies the object to retrieve from cache. |
callback |
the callback used for asynchronous calls to deliver object from cache or error. |
Example¶
AsyncCallback<Order> callback = new AsyncCallback<Order>()
{
@Override
public void handleResponse( Order order )
{
Log.i( "MYAPP", "[ASYNC] retrieved order from cache - " + order.getName() );
}
@Override
public void handleFault( BackendlessFault backendlessFault )
{
Log.e( "MYAPP", "Error - " + backendlessFault.getMessage() );
}
};
// get object from cache asynchronously
Backendless.Cache.get( "firstorder", callback );
// get object from cache synchronously
Order order = Backendless.Cache.get( "firstorder", Order.class );
Log.i( "MYAPP", "[SYNC] retrieved order from cache - " + order.getName() );