[kepler-users] string constant actor and loop problem

[Dan Higgins]

Edward,
    I think that is a great idea. I tried to point out that having two 
StringConstant actors is confusing some time ago (we also have 2 
Constant actors in Kepler), but didn't get much support for getting rid 
of one. Are there any users out there who think having 2 actors is a 
good idea?

Dan


---



Edward A. Lee wrote:
> Rather than having two actors (which can be confusing) wouldn't
> it be better to simply augment StringConst (or better yet, its
> base class, Const) with parameter firingCountLimit?  Some actors
> have this parameter...  This could be used to limit the actor to
> one firing.
>
> Edward
>
>
> At 08:18 AM 7/3/2007, Dan Higgins wrote:
>   
>> Hi,
>>    It is not clear to me from your description exactly what your 
>> problem is. One possibility may be related to the Director your workflow 
>> is using (PN or SDF) and the fact that there are two types of String 
>> Constant actors (one is called 'String Constant' and the other is 
>> 'Permanent String Constant'). The one named 'Permanent String Constant' 
>> will repeatedly output a string, while the other only output a string 
>> once. You might try changing the one you are using. (Also, it might be 
>> useful in the future if you could include an example workflow with any 
>> questions).
>>
>> Dan Higgins
>> NCEAS - UCSB
>>
>> [BE] Ufuk Utku Turuncoglu wrote:
>>     
>>> Hi,
>>>
>>> I try to iterate a workflow which contains some string operations such 
>>> as string replace and accumulator. So, i need to input a string constant 
>>> to string accumulator actor. In this case the workflow is not 
>>> continue/iterate. When i delete the string constant actor the workflow 
>>> is working successfully. How can i iterate this kind of workflow? Is it 
>>> neccecary to add an extra actor that send dummy argument to trigger port 
>>> of the string constant actor?
>>>
>>> best regards,
>>>
>>> Ufuk Utku Turuncoglu
>>> ITU, Informatics Institute
>>> Computational Science and Engineering Programme
>>> _______________________________________________
>>> Kepler-users mailing list
>>> Kepler-users at ecoinformatics.org
>>> http://mercury.nceas.ucsb.edu/ecoinformatics/mailman/listinfo/kepler-users
>>>
>>>   
>>>       
>> _______________________________________________
>> Kepler-users mailing list
>> Kepler-users at ecoinformatics.org
>> http://mercury.nceas.ucsb.edu/ecoinformatics/mailman/listinfo/kepler-users
>>     
>
> ------------ 
> Edward A. Lee
> Chair of EECS and Robert S. Pepper Distinguished Professor
> 231 Cory Hall, UC Berkeley, Berkeley, CA 94720-1770
> phone: 510-642-0253, fax: 510-642-2845
> eal at eecs.Berkeley.EDU, http://ptolemy.eecs.berkeley.edu/~eal  
>
>
>   


-- 
*******************************************************************
Dan Higgins                                  higgins at nceas.ucsb.edu
http://www.nceas.ucsb.edu/    Ph: 805-893-5127
National Center for Ecological Analysis and Synthesis (NCEAS) Marine Science Building - Room 3405
Santa Barbara, CA 93195
*******************************************************************