[kepler-users] About the string constant component in the Ecogrid workflow example.

[Bina Philip]

Hello Jing,

In a previous email exchange you had given an example workflow which
demonstrated the usage of EcogridWriter workflow. In this workflow the
"string constant" was used to send the data file to the metadata source
component.

I had one question about the "string constant" component -- Is this also
capable of receiving a data file from a previous actor (which possibly
generates this file) and supplies the same data file to the next actor
which in the example case is the metadata source component. Basically I am
trying to find out if the same string constant component can also receive
as an input from another actor the data file? Kindly let me know.

Please find attached the workflow I am referring to.

In addition to this I would like to know how the fire method of the actor
is triggered in the workflow. Does the actor get triggered after the
necessary parameters are found or does it get triggered once the control
shifts to the actor? (More of a data v/s control flow question)

Best

-- 
Regards,
Bina
Indiana University Bloomington
Dept Of Computer Science (Master's).
Contact:- 812-327-4780
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