com.gwtplatform.dispatch.rpc.server

Interface ExecutionContext

public interface ExecutionContext

ExecutionContext instances are passed to ActionHandlers, and allows them to execute sub-actions. These actions can be automatically rolled back if any part of the action handler fails.

Method Summary

Modifier and Type	Method and Description
<A extends Action<R>,R extends Result> R	execute(A action) Executes an action in the current context.
<A extends Action<R>,R extends Result> void	undo(A action, R result) Undoes an action in the current context.

Method Detail

execute

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

Executes an action in the current context. If the surrounding execution fails, the action will be rolled back.

Type Parameters:

A - The Action type.

R - The Result type.

Parameters:

action - The Action.

Returns:

The 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 an action in the current context. If the surrounding execution fails, the action will be rolled back.

Type Parameters:

A - The Action type.

R - The Result type.

Parameters:

action - The Action.

Throws:

ActionException - if the action execution failed.

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