I am using Jess 6.0a3 and am using a query to find a specific fact. The
query works, the enum has a valid object, but I can't work with the fact
returned. I am using the following code to get the fact from the
enumeration:
(bind ?page (call (call ?e nextElement) fact 1))
and then this code to manipulate the fact:
(modify ?page (onSection ?section))
I get the error: Message: Not a fact: "<External-Address:jess.Fact>" (type
= EXTERNAL_ADDRESS).
If I use this code to modify instead,
(modify (call ?page getFactId) (onSection ?section))
I get a different error: Message: Not a fact: "call ?page getFactId" (type =
LIST).
What is odd is that if instead of calling modify I call (retract ?page) the
code experiences no errors.
Any workarounds? I am executing these calls in a function.
______________________________________________
Matt Bishop - Engineering Manager, UpFront
We're Growing - http://www.scenicsoft.com/jobs
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