Experimental Physics and
Industrial Control System

"Dalesio, Leo `Bob`" <[email protected]> · Tue, 21 Jun 2005 09:19:26 -0700

We are talking about the API to the CA Client Library.
At our previous meeting we were going to say what the user would see - so that we could tie it to the low level calls that Jeff was presenting and see that they all fit.

And I think the answer to the second questions is "yes". 

-----Original Message-----
From: Ralph Lange [mailto:[email protected]] 
Sent: Tuesday, June 21, 2005 8:52 AM
To: Dalesio, Leo `Bob`
Cc: EPICS Core Talk
Subject: Re: Version 4 EPICS

I don't understand this.

What is "the user request"? Are you talking about the API of the CA Client Library?
Didn't we agree that DataAccess would be the interface to the channel data?

Clueless,
Ralph

Dalesio, Leo `Bob` wrote:

>We have still not created the user request. In an effort to get this started can we put some thing on a wiki page let's make the categories:
>Connect
>Get
>Put
>Monitor
>Any others?
>First attempt - connect..... Please build on this until we have it.
>
>
>Connections:
>
>Request		Connect
>Argument			channel name
>Return			id, quality, data_type, number_of_elements, access
>					id - channel id used as a handle
>					quality - is this the IOC, a gateway, backup/primary
>					data_type - one of a well know set of data types
>					number_of_elements - if this is an array -
>					access - do I have access or not
>
>Request		Match
>Argument			regular expression
>Return			number of matches, array of: id, quality, data_type, num_elm, acc
>(as in first expample)
>  
>

-- 
Ralph Lange               [email protected]     Tel: +49 30 6392-2117
BESSY Controls Group      www.bessy.de             Fax:      ...   -4859

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System