Re: [Openflow-dev] Quick start

[Juan D. P. <jd...@nu...>]

Hola, ;-)



Julián Muñoz wrote:

>Hello (hola)
>
>
>>Is there an example that shows how to use OpenFlow?
>>
>
>No (there was one, but it is for an old version).
>
>
>>I'd like to know how looks an application based on OpenFlow.
>>
>
>Uhmm,
>the better is to install Openflow.
>An application based on Openflow looks like a list of things to do.
>

I installed it, created a process definition, a transition between the 
two default
activities, added a process instance, ...

DCWorkflow has the concept of worklists. I think (I'm not a strong 
DCWorkflow
user) that a worklist is just a list of things to do. An allowed user 
looks at a working
list and sees the objects that are in a given state, and can change 
their state.

Is something like this the "list of things to do" of Openflow?



>>The only workflow tool I've used is DCWorkflow. I guess you
>>already know it, probably better than me.
>>
>
>I don't know it, but I know what is a state based workflow, it is good for
>defining telecomunitacions protocols, where is it clear than an object
>must give responses to external signals, depending of its state. The
>workflow marcs the path of the states. I think it is the way DCWorkflow
>works, isn't it ?
>

Yes, I think so. Is OpenFlow different?


>>permission settings of the object. Does OpenFlow modify the
>>permission settings too?
>>
>
>Openflows gives the list of activities for each differente user, and
>limits who can say "I have finished this activity".
>
>

I don't understand well, I'm not familirized with the jargon, what is an
"activity" for example? Things that are obvious for you are difficult for
me.

I'm familirized, however, with the Zope's jargon, users, roles, permissions,
objects, etc..


Let's see an example, imagine that I want to add moderation to a weblog.
The weblog has a Zope meta type named "Article". I would like to have
this:

  1. An anonymous user posts a new article;

  2. A reviewer sees the new article in his list of articles pending of
      review;

  3. The reviewer can accept or reject the article.


I know how to do this with DCWorkflow. An article is an object that can
be in two states, "pending" and "public". The "Anonymous" role only has
the permission "View" if it's in the "public" state. This is a simple way to
filter the articles that are shown in the weblog, users only show the 
articles
they're allowed to see.

How to do this with Openflow?


Thanks,

-- 
J. David Ibáñez, Nuxeo.com
Libre Software zealot (http://www.fsf.org)