DataCallback

public abstract class DataCallback<ReplyType, RequestType> implements Callback

Implement the user behavior for a LocalServer method with a simple signature without events. This makes implementing callbacks simple, because no RSB Event instances need to be used. However, this e.g. prevents setting timestamps or further meta data of events. If you need such a behavior, please use EventCallback. In case you either do not need a request paramter or do not return any data, specify the respective java generics parameter as Void. You can then safely return null if you have no result. In other cases, null is explicitly not allowed. TODO check the null assumption

Author

jmoringe, jwienke

Parameters

• <ReplyType> – The type of data produced as replies to the implemented functionality.

• <RequestType> – The type of data required as request parameter

Methods

internalInvoke

public Event internalInvoke(Event request)

invoke

public abstract ReplyType invoke(RequestType request)

This method is called to invoke the actual behavior of an exposed method. Implementing user code must not swallow interruption state. Instead, it has to be passed to the outside world through an InterruptedException.

Parameters

request – The argument passed to the associated method by the remote caller.

Throws

• InterruptedException – Indicates that the operation was interrupted.

• Exception – Can throw anything.

Returns

A result that should be returned to the remote caller as the result of the calling the method.