Bill Shannon wrote on 02/03/2011 10:37 AM:
> Ludovic Champenois wrote on 02/03/2011 10:17 AM:
>> On 2/3/11 10:09 AM, Shing Wai Chan wrote:
>>> Hi Tom,
>>> Thanks for your reply.
>>> This is what I need.
>>> But now, we need to know how to do that in CLI and admin gui.
>>> Note that in admin gui, or CLI, if we don't specify, then it is a null which
>>> becomes a default.
>>> Is there a way to specify "" in admin gui or CLI?
>>> Thanks.
>>> Shing Wai Chan
>>>
>> In general, to do that in a UI (web , IDE, etc), you would need both an entry
>> field and a checkbox to make the difference between "" and the null value, which
>> I've seen very very rarely...Are we ready to add this check box for all possible
>> fields? or rely on default common sense? Sometimes, Apps used so special string
>> for entering a null value (like (null)) but this means that the "(null)" string
>> would never be a possible user value.
>
> Right, I'd recommend using some distinguished value that would have the same
> meaning as what you currently get with "", i.e., if "" means "don't store
> session state", then use a value of "NONE" or something like that. Yes,
> that means the user can't store their session state in a file named "NONE".
> Tough.
Another reasonable choice might be "-".