Re: Deja vu Again

[Randy Presuhn <rpresuhn@dorothy.bmc.com>]

Hi -

> Message-Id: <5.1.0.14.2.20020627163912.035d1e40@127.0.0.1>
> Date: Thu, 27 Jun 2002 16:46:49 -0700
> To: xmlconf@ops.ietf.org
> From: "David T. Perkins" <dperkins@dsperkins.com>
> Subject: Re: Deja vu Again
> In-Reply-To: <200206272250.PAA13063@dorothy.bmc.com>
> X-Spam-Status: No, hits=-2.4 required=5.0
> 	tests=IN_REP_TO,RCVD_IN_MULTIHOP_DSBL,X_RCVD_IN_UNCONFIRMED_DSBL,
> 	      FUDGE_MULTIHOP_RELAY
> 	version=2.30
...
> There is a trade-off with the approach that you have taken. And
> that is to have all "values" as strings, and not have a type
> associated with the "typ". This is deferred for the "next round"
> of checking (and interpreting). 

I'm not saying I like it.  I'm just saying I dislike it less
that Andy's proposal of everything under the sun having its
own schema.

And it's not a proposal.  Andy wanted to know what I meant
by metaschema, and I figured than an example of one in use
would be the simplest explanation.

> By the way, the below is getting to look a lot like CMIP....

Surprised?  I thought that was the topic of this thread.  :-)

> If we go that way, then there could be several ways to identify
> an instance. Which will make app writers happy, but maybe
> "agent" writers grumble about the additional support for
> each indexing (identification) scheme.

It depends on how you do it.  The RDN approach of CMIP is
actually really easy to implement *if* the encoding rules
guarantee that there is exactly one way to represent an
instance name (or that there is at least a normalized form
that can be generated without specific class knowledge.)

> Randy - how would you do "embedded" object classes?
...

I wouldn't.  I'd do containment exactly the way CMIP 
does it, with RDN (relative distinguished name) sequences.
For attributes with complex syntaxes, perhaps the LDAP
rules could be recycled...

 ------------------------------------------------------
 Randy Presuhn          BMC Software, Inc.  1-3141
 randy_presuhn@bmc.com  2141 North First Street
 Tel: +1 408 546-1006   San José, California 95131  USA
 ------------------------------------------------------
 My opinions and BMC's are independent variables.
 ------------------------------------------------------

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