[kepler-users] string constant actor and loop problem

[Dan Higgins]

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
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