Adding rules at run time

[Carlo Alberto Catarinicchia]

If I have correctly understood, when we compile the nools file the rete graph get generated. 

What I would like to do is to add rules after the graph has been generated (as far as I know rete allows that).

My scenario is a server with nools running, and I would like the client to be able to add custom rules to it.

Is there a way to do it in Nools?

Carlo

[Douglas Martin]

You can use the flow.addRule after compile...however the new rule will not take affect until you get a new session.

[Carlo Alberto Catarinicchia]

ok, so that means that to have it in effect, I should retrieve all the (basic, i.e. not asserted by rules) facts, create a new session and assert the fact in the new session, right?

[snow crash]

Hi,

If the new Rule to add uses a Class that is always defined in the existing flow, how should I reference it ?

I tried :

try{
var noolsSource = "rule 'Measurement id is 123' {"
   + "   when {"
   + "     m : Measurement m.measurementId == '123';"
   + "   }"
   + "   then {"
   + "       console.info('Found Measurement with id of 123');"
   + "       retract(m);"
   + "   }"
   + "}";
var options = { "name":"test"};
options.name = "test";
var compiledRule = nools.compile(noolsSource, options), Measurement = flow.getDefined("Measurement");
flow.addRule(compiledRule);
} catch (err) {
   console.log("Error:", err)
}

But I got :  Error: [Error: Invalid class Measurement for rule Measurement id is 123]

[snow crash]

Then, if I recopy the Class definition in the new Rule, it says :

Error: [TypeError: Object [object Object] has no method 'addRule']

on the flow object returned by initial nools.compile()