[jbpm-dev] Simplifying Oryx Designer using resolution of global variable and parameter mapping at runtime

Thu Aug 16 07:52:39 EDT 2012

It can be used for every data mapping that we need to do, for example to
map the Person fields (age, name, address) to different fields in a form.

This is not about using expressions to resolve values at runtime, you can
consider a data mapper a tool to create those expressions based on the data
available. This kind of tools can be also used for Rules as well, so the
process designer is just one component that can use that.

The idea is
1) recognize that we have a Person (Person object and person input to the
task for example)
2) look for its fields (age, name, address)
3) look for the already defined variables in the scope where we want to map
things  (name inside the task scope)

Cheers

On Thu, Aug 16, 2012 at 12:39 PM, Tihomir Surdilovic <tsurdilo at redhat.com>wrote:

>  Transformation expressions are part of the BPMN2 specification. For
> example Person.name assignment would have a transformation expression
> defined which evaluates this expression and its result is copied to the
> target reference.
>
> Can't think right now why it would be useful to have data association
> abilities as stand-alone outside of the process modelling environment but
> maybe I don't understand what you mean.
>
> Thanks.
>
>
>
> On 8/16/12 7:12 AM, Mauricio Salatino wrote:
>
> And we should think about having a component that can be used outside the
> process designer as well.
>
>  When you say transformations what do you mean?
>
>
> On Thu, Aug 16, 2012 at 12:11 PM, Tihomir Surdilovic <tsurdilo at redhat.com>wrote:
>
>>  Agreed, Designer already supports transformations to do what you are
>> asking for, but the data editors should allow users to use this feature
>> better. Will look at it.
>>
>> Thanks
>>
>> On 8/16/12 7:06 AM, Mauricio Salatino wrote:
>>
>> Just a quick comment about mapping data,
>> I think that we need a specialized component to do that, because is a
>> cross cutting concern.
>> No matter if we are mapping task inputs and task outputs or a form field,
>> we need a graphical mapping component to take care of that.
>>
>>  We need a graphical way to do something like
>>
>>  Input: Person -----> Person.name ---- <mapped to> ----> name
>>
>>  and the other way around
>>
>>  Output Person.name <----<mapped to>--- name
>>
>>
>>
>> On Thu, Aug 16, 2012 at 11:20 AM, Tihomir Surdilovic <tsurdilo at redhat.com
>> > wrote:
>>
>>>  There are a number of ideas floating around on this - and yes data
>>> mapping within a BPMN2 process is probably now one of the hardest things to
>>> set up and maintain.
>>>
>>> a) Have ability to map data outputs of a task to data inputs of the
>>> connected tasks(s) with a single button click
>>> b) Ability to visualize the data flow of the process
>>> c) Notifications of dependency errors when users decide to remove a
>>> process var, globals, imports, etc
>>> d) Ability to "copy" existing data elements such as
>>> variables/globals/imports/etc from an already existing process or a process
>>> template..this has been asked in the community already and we are looking
>>> at it.
>>>
>>> jBPM follows the BPMN2 specification for data setup and mapping closely
>>> which is a good thing as it does not introduce any wrappers around it (you
>>> might see other tools use extensions elements for this heavily). I don't
>>> think writing wrappers is a good idea, however making working with data as
>>> simple and intuitive as possible for users is very important so any
>>> ideas/thoughts/contributions are very welcome :)
>>>
>>> Jean-Jacques, If you want to jump on IRC and I'd be happy to talk to you
>>> in detail about all of this as well.
>>>
>>> Thanks.
>>> Tihomir
>>>
>>> On 8/16/12 3:38 AM, Esteban Aliverti wrote:
>>>
>>> The problem is that BPMN2 specification requires the variables to be
>>> defined.
>>> What you will need to do is to modify Designer to automatically create
>>> the required variables according to the IO specification of the tasks you
>>> have. Unfortunately this is not as easy as it sounds ;).
>>> Designer keeps a representation of the process in JSON format. That JSON
>>> is then converted into BPMN2 when it is saved. When you open a process
>>> Designer first converts it from BPMN2 to JSNO back again.
>>> You will need to tweak the Marshalling/Unmarshalling process..
>>> The classes in charge of this are:
>>>  org/jbpm/designer/bpmn2/impl/Bpmn2JsonMarshaller.java and
>>> java/org/jbpm/designer/bpmn2/impl/Bpmn2JsonUnmarshaller.java
>>>
>>> @Tiho, do you see a better solution?
>>>
>>>  Best Regards,
>>>
>>> XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
>>>
>>> Esteban Aliverti
>>> - Blog @ http://ilesteban.wordpress.com
>>>
>>>
>>> On Thu, Aug 16, 2012 at 5:10 AM, Jean-Jacques Borie <
>>> jean-jacques.borie at bluebe.com> wrote:
>>>
>>>> I need to add that we plan to use work item definition file to declare
>>>> parameters of work item and we don't want to do it again on the workflow.
>>>>
>>>> Jean-Jacques
>>>>
>>>>
>>>> On Thu, Aug 16, 2012 at 10:06 AM, Jean-Jacques Borie <
>>>> jean-jacques.borie at bluebe.com> wrote:
>>>>
>>>>> Hello,
>>>>>
>>>>> I want to simplify Oryx designer in order to don't have to map every
>>>>> variables with input/output of task.
>>>>>
>>>>> I want to remove the need of declaring global variable and the mapping
>>>>> with parameter of task.
>>>>>
>>>>> When you have lots of workflow, it's start to be very annoying.
>>>>>
>>>>> I'm thinking of moving this declaration of mapping to do it at runtime.
>>>>>
>>>>> Like having a spring configuration file to declare all variables
>>>>> needed for a series of workflow.
>>>>>
>>>>> And next do the mapping of variable by IOC with work item or something
>>>>> like that.
>>>>>
>>>>> I want to keep the scope variable between process and work item.
>>>>>
>>>>> I want to make easier the work of people doing the workflow in order
>>>>> to give the tool for non developer.
>>>>>
>>>>> Any idea ?
>>>>>
>>>>> Thanks
>>>>> Jean-Jacques Borie
>>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> jbpm-dev mailing list
>>>> jbpm-dev at lists.jboss.org
>>>> https://lists.jboss.org/mailman/listinfo/jbpm-dev
>>>>
>>>>
>>>
>>>
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>>
>>
>>  --
>>  - MyJourney @ http://salaboy.wordpress.com
>>  - Co-Founder @ http://www.jugargentina.org
>>  - Co-Founder @ http://www.jbug.com.ar
>>
>>  - Salatino "Salaboy" Mauricio -
>>
>>
>>
>
>
>  --
>  - MyJourney @ http://salaboy.wordpress.com
>  - Co-Founder @ http://www.jugargentina.org
>  - Co-Founder @ http://www.jbug.com.ar
>
>  - Salatino "Salaboy" Mauricio -
>
>
>

-- 
 - MyJourney @ http://salaboy.wordpress.com
 - Co-Founder @ http://www.jugargentina.org
 - Co-Founder @ http://www.jbug.com.ar

 - Salatino "Salaboy" Mauricio -
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