Re: [CASHeW-s-Editor] Symbols to use for components in editor...

[Andrew John Hughes]

On Mon, 2004-12-06 at 15:31, Ravish Bhagdev wrote:
> Hi,
> 
> We need to decide on symbols to use for our editor for composing processes.  
> I had suggested that we use UML diagrams.  But I guess we need some more.  We 
> have following: 
> 
> Process (rect)
> Flow (arrows)
> Choice (diamond)
> For parallel execution, we can use Split (as one line splitting into multiple 
> going into different processes)
> 
> Any suggestion for start and end nodes?
> 

Have you been looking at a specific type of UML diagram or just choosing
arbitrary UML-like notation?  At a glance, activity diagrams seem the
most appropriate to me.  An activity is defined as 'an ongoing nonatomic
execution', and the notation includes initial and final states,
processes, sequential branching and concurrent forking.

> What other will be required, we needed a few specialized ones, can u please 
> tell me about that?
> 
Have a look at the OWL-s presentation on the website or the
specification -- this defines the control structures that can be used. 
Of the top of my head,

* Sequential
* Any-Order
* If-Then-Else
* The two repeat constructs
* Split
* Split/Join
* Choice

> I guess we can use anything for the screenshot in proposal as we can change 
> later...??
> 
The screenshot is just a mock-up of how you think the editor will
eventually look.  Final results will obviously differ.

> Andrew, if you can please suggest something and an example for the 
> proposal....
> 
I'd recommend you show at least:

* Building up a process (the OWL-s part)
* The scope for adding Haskell (Atheesh should really do this bit)

and anything more you can think of that's relevant.

> Cheers,
> 
> Ravish Bhagdev.
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Cheers,
-- 
Andrew :-)

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