RE: [plcs] Global rule [Was: Re: [plcs] The saga on "manage identification" / NSN]

["Rob Bodington" <rob.bodington@eurostep.com>]

In my view we concluded the discussion about global rules by saying that the
PLCS schema in the AP would have no additional rules.

We also concluded that there was a need for global rules and these would
created/managed/applied in the DEXs.

There are two places where we can apply these global rules. Either in a DEX, in
which case the rules will only be applicable to the DEX in which they are used.
Or in a capability, in which case they will be applicable to which ever DEX uses
the capability.

An alternative is to manage the rules separately to the DEXs and capabilities
and "Pull" them into whichever DEX/capability requires them.
The disadvantage of this approach is that we will divorce the rules from the
business context in which they have been created, namely the DEX and
capabilities.

Regards
Rob

-------------------------------------------   
Rob Bodington
Eurostep Limited
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-----Original Message-----
From: Per-Åke Ling [mailto:per-ake.ling@eurostep.com] 
Sent: 05 November 2004 12:23
To: Trine.Hansen@dnv.com
Cc: plcs@lists.oasis-open.org; Leif.Tonning@dnv.com
Subject: [plcs] Global rule [Was: Re: [plcs] The saga on "manage identification"
/ NSN]

I am slightly confued by the quote below. Regarding rules in DEXes there 
does not seem to be any disagreements, obviously there is a need for them.

On the other hand, the global rules where ruled out (after discussion) 
since it is hard to be sure that a rule realy is universally global for 
all possible uses of PLCS, and also dur to technical issues (there are 
currently no rules, so it is an unnecessary complexity to introduce them).

During the discussion last week I assumed that "rules" referred to 
Express rules in the PLCS schema. However, I may have misunderstood 
since the quote below appears to refer to a different set "rules", e.g. 
rules on how to design DEXes.

I would appreciate a clarification.

Regards,
Per-Åke

Trine.Hansen@dnv.com wrote:
...
> Global rules. In our view, a DEX specification represents a specific
 > business object. These objects will hold their own set of rules.
 > Additionally, there will be a common need for rules applying to DEX'es
 > as such. These rules probably should be global.
...
> Leif and Trine
> 


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