[rules-dev] 'if' in guided editor

[Edson Tirelli]

   Mark,

   Yes, from a DSL Compiler perspective, keywords are customizable. But 
from tools perspective, they need to add support to that. Also, I think 
Michael is generating DRL directly from the editor, aren't you Mic? So 
this is only a tool thing...

   []s
   Edson


Mark Proctor wrote:

> Is using 'if' and 'when' confusing? should be not standardise over it?
>
> I think "when" is used as you say "when this then that" not "when this 
> maybe this or maybe that else that", where as if/else is a common 
> usage - so helps emphasis that rules are more atomic.
>
> With Edson's work is this not all localisable now anyway? If so, need 
> to make sure that the guided editors obey his keyword localisation work.
>
> Mark
> Michael Neale wrote:
>
>> no, it was just to be different. It can be anything. It can be
>>
>> "wassup" or something ;)
>>
>> Not sure if that explanation has any real meaning, I mean it makes a 
>> point, but "when" actually implies to me that it is slightly temporal 
>> (ie "when" means it will happen, at some point in time, where as "if" 
>> means it may or may not happen - neither of which are 
>> procedural/imperative).
>>
>> I think its ok to say IF, as people still say "if/then" for 
>> production rules, its not really confusing - perhaps we need another 
>> way to explain imperative versus declarative.
>>
>> On 2/26/07, *Mark Proctor* <mproctor at codehaus.org 
>> <mailto:mproctor at codehaus.org>> wrote:
>>
>>     I noticed that 'if' is used in the guided editor instead of
>>     'when', whats the reason for this? As currently I explain the use
>>     of 'when' because it indicates its not procedular, where as 'if'
>>     is considered part of a procedural logic flow. Will this confuse
>>     that explanation?
>>
>>
>>
>>     Mark
>>
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 Edson Tirelli
 Software Engineer - JBoss Rules Core Developer
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