com.gwtplatform.dispatch.rpc.server

Interface Dispatch

All Known Implementing Classes:

AbstractDispatchImpl, DispatchImpl, DispatchImpl

public interface Dispatch

The base class of the synchronous dispatcher service with an arbitrary action type. The server-side implementation is DispatchImpl and the async client-side version is DispatchAsync.

This class is closely related to DispatchService. In fact, this class wouldn't be needed, but we use it to workaround a GWT limitation described in DispatchAsync.

Method Summary

Methods

Modifier and Type	Method and Description
<A extends Action<R>,R extends Result> R	execute(A action) Executes the specified action and returns the appropriate result.
<A extends Action<R>,R extends Result> void	undo(A action, R result) Undoes a previously executed action.

Method Detail

execute

<A extends Action<R>,R extends Result> R execute(A action)
                         throws ActionException,
                                ServiceException

Executes the specified action and returns the appropriate result.

Type Parameters:

A - The Action type.

R - The Result type.

Parameters:

action - The Action.

Returns:

The action's result.

Throws:

ActionException - if the action execution failed.

ServiceException - if the execution failed due to a service error.

undo

<A extends Action<R>,R extends Result> void undo(A action,
                                               R result)
          throws ActionException,
                 ServiceException

Undoes a previously executed action.

Type Parameters:

A - The Action type.

R - The Result type.

Parameters:

action - The Action to undo.

result - The result obtained when the action was previously executed.

Throws:

ActionException - if undoing the action failed.

ServiceException - if the execution failed due to a service error.