The au-writer-class Element
Syntax:
[Default: org.zkoss.zk.au.http.HttpAuWriter for ZK CE and PE, or org.zkoss.zkmax.au.http.SmartAuWriter for ZK EE]
It specifies which class is used to implement the AU writer. The AU writer is used to generate the output and send it to the client. The class must have a default constructor (without any argument), and implement the
interface.
There are two built-in implementations, HttpAuWriter and
SmartAuWriter. The former one sends the output the client after the
requests are processed completely. On the other hand, the later one will
send a partial output first if the processing is taking too long (half
of the value specified in the resend-delay element). By sending the
partial output, the client will know if the server is still alive.