com.gwtplatform.dispatch.rpc.server

Class AbstractDispatchImpl

java.lang.Object

com.gwtplatform.dispatch.rpc.server.AbstractDispatchImpl

All Implemented Interfaces:

Dispatch

Direct Known Subclasses:

DispatchImpl, DispatchImpl

public abstract class AbstractDispatchImpl
extends Object
implements Dispatch

This is the server-side implementation of the Dispatch service with an arbitrary action type, for which the client-side async service is DispatchAsync.

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

See Also:

DispatchAsync, Dispatch, DispatchImpl, DispatchService, DispatchServiceAsync, DispatchServiceImpl

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractDispatchImpl(ActionHandlerValidatorRegistry actionHandlerValidatorRegistry)

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.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AbstractDispatchImpl

protected AbstractDispatchImpl(ActionHandlerValidatorRegistry actionHandlerValidatorRegistry)

Method Detail

execute

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

Description copied from interface: Dispatch

Executes the specified action and returns the appropriate result.

Specified by:

execute in interface Dispatch

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

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

Description copied from interface: Dispatch

Undoes a previously executed action.

Specified by:

undo in interface Dispatch

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.