| Provides a validation service that simulates a slow back-end operation.
A server-side service may be slow due to database requests,
heavy computations, slow network transport, etc.
The JGoodies Validation tutorial demonstrates approaches to handle
this situation: delayed validation, background validation,
client-side pre-validation, client-side caching.
The above techniques apply if the costs to check for valid data
are significantly lower than the costs to look up valid choices,
or if you cannot look up or compute the valid choices.
If the valid choices can be provided at affordable costs,
a client may choose to present the valid choices, instead
of complaining about invalid data.
author:
Karsten Lentzsch
version:
$Revision: 1.6 $ |
