Experimental Physics and
Industrial Control System

Marty Kraimer <[email protected]> · Fri, 17 Jun 2005 10:48:37 -0500

Ralph Lange wrote:

What I really like to have (if I had a free wish...) for the Gateway

is a completely opaque black-boxed data store.

A wish is not an implementation and actually not even an interface :-)

This is really important. We must see how to implement the data store

for a CA gateway.

If someone can create code to describe, store, and transport all data

we have discussed so far via just the Data Access definitions then

please tell us how to do it.

Let me just make a wild proposal that involves allowing only well

defined types.

GIVEN

The types

primitive
    bool,
    octet,
    int16,
    ...
    float64
string
array
struct   - can contain fields of any type including itself

And via these types define a way to introspect.

THEN

Then I claim that we can create code to describe, store, and transport

all data we have discussed so far.

It would mean that anything interfacing to CA must use only this set of

types for data.

Marty

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System