6:30 p.m.
I was looking at Blaze Advisor documentation it has “when changed”
operator that only fires when an attribute of an object changes. A business
analyst might use it to watch for any important issue, such as a thermostat
warning in a process plant or a particular stock reaching a certain price or
volume.
In similar way does Drools have this feature?
Can any one correct if I am wrong: Rules can be updated by business users
thru BRMS and Guvnor? (I did not get chance to go thru these)
3:14 p.m.
Lindy,
by default Drools will re-evaluate the rules "as needed" once facts
are changed (and the engine is told about it), so "when changed" is
actually the default behavior.
The examples you give sound more like an event-processing scenario
(reasoning over time) so you might want to have a look at drools-fusion.
Rules can be updated by business users thru BRMS and Guvnor?
The
short answer yes.
The long answer: Your milage may vary. It really depends on what type
of rules and what type of business users. I don't think it's safe to
just "tick this box".
That has not much to do with Guvnor's capabilities (allthough it is a
new product) - I rather think that this is not true for any BRMS.
-- Ingomar
Am 24.04.2009 um 18:30 schrieb Lindy hagan:
I was looking at Blaze Advisor documentation it has “when changed”
operator that only fires when an attribute of an object changes. A
business
analyst might use it to watch for any important issue, such as a
thermostat
warning in a process plant or a particular stock reaching a certain
price or
volume.
In similar way does Drools have this feature?
Can any one correct if I am wrong: Rules can be updated by business
users
thru BRMS and Guvnor? (I did not get chance to go thru these)
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
5:14 p.m.
2009/4/24 Lindy hagan <lindyhagan(a)gmail.com>:
I was looking at Blaze Advisor documentation it has “when changed”
operator that only fires when an attribute of an object changes. A business
analyst might use it to watch for any important issue, such as a thermostat
warning in a process plant or a particular stock reaching a certain price or
volume.
In similar way does Drools have this feature?
Can any one correct if I am wrong: Rules can be updated by business users
thru BRMS and Guvnor? (I did not get chance to go thru these)
Hi,
you can register your business objects (facts) as dynamic facts. They
will need to implement addPropertyChangeListener and related methods.
That way, as soon as a property that is used in a rule changes, the
rule will re-evaluate and fire if appropriate.
See section 2.5.4.7. of the docs for more information on this feature.
Best regards
Marcus
3:43 p.m.
Lindy,
I am not aware of this "when changed" feature in BA, but by your
description, Drools does not have the same thing out of the box. You would
have to explicitly control this on your rules.
Interesting feature nevertheless. With the implementation of true modify
that we will be doing for the next iteration, it should be quite easy to add
such a feature.
Edson
2009/4/24 Lindy hagan <lindyhagan(a)gmail.com>
I was looking at Blaze Advisor documentation it has “when changed”
operator that only fires when an attribute of an object changes. A business
analyst might use it to watch for any important issue, such as a thermostat
warning in a process plant or a particular stock reaching a certain price or
volume.
In similar way does Drools have this feature?
Can any one correct if I am wrong: Rules can be updated by business users
thru BRMS and Guvnor? (I did not get chance to go thru these)
_______________________________________________
rules-users mailing list
rules-users(a)lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
--
Edson Tirelli
JBoss Drools Core Development
JBoss, a division of Red Hat @ www.jboss.com
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3 comments
4 participants
participants (4)
-
Edson Tirelli -
Ingomar Otter -
Lindy hagan -
Marcus Ilgner