Hi I have been reading all the emails from this mailing list, and found it quite time consuming opening one, read, closing one then opening another...
I wonder if I can view these messages through a web? like something for JavaRanch and any other web sites where posting/answering questions are all through the web. If so, what is the site address? Thanks very much for an answer. Yanhui Yu =========== Pioneer HiBred International, Inc. 515-253-2122 -----Original Message----- From: Carter, Steve [mailto:[EMAIL PROTECTED]] Sent: Wednesday, February 20, 2002 11:09 AM To: Struts-User (E-mail) Subject: action and form contract On husted.com, Ted Husted wrote: Do not check for null ActionForm beans in your Actions If an Action expects an ActionForm bean, then its API contact with the ActionMappings should require that this bean, or a subclass, be named in the ActionMapping. The Actions contact wit the controller is that it will always instantiate the bean before the Action is called. If either contact is broken, the application should expose a null pointer exception so that the problem is fixed and the misunderstanding resolved. Whether an Action expects an ActionForm bean should be specified in its Javadoc. Now I'm wondering if 'contact' was a type and what he meant was 'contract', that is, in the sense of an API contract or implied constrain, pre-condition. (You out there Ted?) Anyway, this seems like a good idea. I'm always complaining that exceptions are often overused or misused in Java, and this seems like a good use: let the exception raise havoc, in order to inform you of a really exceptional condition, and one that should be exposed if it exists. Steve Carter Sr. Software Engineer Swift Rivers [EMAIL PROTECTED] -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
