[kepler-users] Question from a newbie - access variables from a database query

[Scott Bainbridge]

Hi,

I am new to Kepler and I am writing a data quality control system. In
order to learn Kepler I am trying to get some basic functions happening.
At the moment I can connect to the database, run a query and display the
output as XML or whatever. So far so good. I want to be able to take one
of the database variables and do something with it, for example to plot
two of the database fields.

I think I need to create a port in the database query actor to pull off
the variable I want to deal with but when I do this and put this through
to a display actor I get no display so this is not working. I feel that
I need to bind the port to the database variable but I am not sure how
to do this.

So the question is how do I access one of more fields or variables from
the query and then use this for further processing??

This seems so basic but I can't find any info anywhere, some of the
examples seem to have ports defined to do this but I am not sure of how
to bind the port to the database field.


Any ideas welcome!


Scott.


Scott Bainbridge
Data Manager,
Australian Institute of Marine Science
S.bainbridge at aims.gov.au


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