Oops! Sorry...
-Stathis
- Original Message -
From: "Stathis Rouvas"
To: "Rules Users List"
Sent: Thursday, July 11, 2013 6:48:04 PM
Subject: Re: [rules-users] Backward Chaining Tutorial
- Original Message -
From: "Mark Proctor"
To: "
- Original Message -
From: "Mark Proctor"
To: "Rules Dev List" , "Rules Users List"
Sent: Friday, May 24, 2013 9:55:30 AM
Subject: [rules-users] Backward Chaining Tutorial
made this video, hope it helps in understanding backward chaining.
https://www.youtube.com/watch?v=fCjIRVSRFvA
M
m-introduction-docs/html/gettingstarted.html
>
> Mark
> On 18/05/2012 16:03, Stathis Rouvas wrote:
>> Hello List,
>>
>> I recently migrated from Drools.5.0.1 to Drools.5.4.0 and I am having
>> issues when combining constraints with OR when custom operators are
>> involve
m-introduction-docs/html/gettingstarted.html
>
> Mark
> On 18/05/2012 16:03, Stathis Rouvas wrote:
>> Hello List,
>>
>> I recently migrated from Drools.5.0.1 to Drools.5.4.0 and I am having
>> issues when combining constraints with OR when custom operators are
>> involve
Hello List,
I recently migrated from Drools.5.0.1 to Drools.5.4.0 and I am having issues
when combining constraints with OR when custom operators are involved.
For example, the following rule:
rule "r548695.1"
no-loop true
dialect "mvel"
when
gnId : GN()
la : t547147( )
v1717 : T
ools version is not feasible at the moment, although at the
TODO list.
Thank you for your time,
-Stathis
>
> Mark
>
> On 24/04/2012 18:43, Stathis Rouvas wrote:
>> Hi List.
>>
>> I am using Drools.5.0.1.
>>
>> I am experiencing abnormalities using i
Hi List.
I am using Drools.5.0.1.
I am experiencing abnormalities using insertLogical(),
namely that in the following code
RaResultCode and RegistryUsed are found inserted (using the relevant
queries), while
InternalResultCode is not found (using the query "get ircQuery")
and I cannot exp
Wolfgang Laun wrote:
> accumulate is not the way to go.
>
> If you need accumlated counts for certain facts, by type or, within
> some type, by attribute value, then you should set up secondary facts
> and maintain these during the element insertion process or by separate
> (static) rules.
>
> clas
Apart from these considerations, you may also need to take into account
performance and memory differences between the two approaches.
In my Drools.5.0.1 project, I was tempted by declarative facts at first,
until I found out that at runtime you need approximately 3 times the
memory and you incur
WangRamon wrote:
>
> Hi Stathis You're probably right, maybe it's a wrong question, i'm new to
> Drools, so I copy the rule sample from user guide as below to better
> explain, that's what i need, but the rule will be automatically generated
> in the future.. package com.company.license
>
> rule "I
WangRamon wrote:
>
> Hi Guys I'm still confused about this question, let's say i may have a
> very large rule set, how can Drools support this case, will it load every
> rule into memory? Any idea? Thank you guys. CheersRamon
You are either asking the wrong question or you do not understand what y
ihabo01 wrote:
> Many thanks Vincent,
>
> But this is actually the problem, my object is not a JAVA object. It is
> only
> defined in the rule, so only the rule knows about it.
Get a FactHandle to the Fact and iterate over the list of properties
matching their names to those of the JSON propertie
Saurabh Pandey wrote:
> @Nguy I tried salience but it just orders the execution of "when" part,
> but
> still all when execute before the "then" parts
Hi,
it seems to me that you are using the wrong tool to solve your problem.
Drools is a rule-based execution engine (among other things) not a
glo
Swindells, Thomas wrote:
> I've found no-loop to be pretty much completely useless.
> It only stops the rule from triggering itself, but it doesn't stop loops
> where multiple rules
Correct. I suggested "no-loop" exactly from preventing the same rule to
fire in a loop.
Another road to follow, cou
I would also suggest that you add a "no-loop" directive to each one of
your rules, at least to the ones "written" by the end-users (if I
understood correctly).
As I have (painfully) found, it is extremely easy to produce never-ending
loops on (end)user-created rules.
-Stathis
Dean Whisnant wrote
sreeram.vadlam...@wellsfargo.com wrote:
> Hello ,
>
> I am using 5.2.0.CR1 version of Guvnor .
>
> I have a jaxb generated class loaded through the model jar into Guvnor to
> be used as a fact in the Guided Decision Table editor.
>
> When I use a field ACTIVITYCODE of type String from the JAXB gen
Wolfgang Laun wrote:
> 2011/6/30
>
>> What are the available symbolics for temporal values?
>> That is, d is for days, m is for minutes, h is for hours, s is for
>> seconds.
>> Are there any other symbolics specifically for months and years?
>>
Thanks for the clarification.
>
> You can use ms fo
What are the available symbolics for temporal values?
That is, d is for days, m is for minutes, h is for hours, s is for seconds.
Are there any other symbolics specifically for months and years?
I haven't found any mentioning of them in the Fusion manual.
I'm using 5.0.1
Thank you,
-Stathis
Wolf
Thanks for the quick reply.
I forgot to mention that I'm using 5.0.1, but I'll look at the Fusion
manual for more info.
-Stathis
Wolfgang Laun wrote:
> See the "Fusion" manual, section on Temporal Reasoning/Temporal Operators.
> Even when the facts aren't events, these operators can still be appl
Hi list,
I feel this should be an elementary question but unfortunately I haven't
been able to find a solution.
I would like to perform date arithmetic in the when part of a rule.
For example, I would like to express something like:
rule "Date compare rule"
dialect "mvel"
when
a : A()
b :
Sumeet Karawal wrote:
> Thanks Esteban!!. I got you point. But how to make the rule to run
> according to a condition, in a loop.
>
> Also, how can we trigger the firing of one rule from another rule. Like
> when the Condition part of a rule satisfies then, in the Action part a
> particular rule is
Wolfgang Laun wrote:
> All who stick with JDK 1.5 should realize that
>- JDK 1.5 has officially reached "end-of-life", i.e., no more
> maintenance
Valid point, but you can't move JDKs if it is not supported by the
application server.
Main platform over here is Oracle.10g, i.e. JDK5.
-Stathis
Will be using JDK5 for the forseable future.
-Stathis
Mark Proctor wrote:
> http://blog.athico.com/2011/01/jdk15-future-for-drools-and-jbpm.html
>
> Dropping JDK1.5 is something that rears it's head from time to time, and
> we know we have to address it sooner or later.
>
> We recognise that the
Greg,
thank you for your advise.
That helped me tackle the problem.
-Stathis
Greg Barton wrote:
> One way of detecting cartesian products is to model the LHS as a graph,
> with object patterns being nodes, and conditions that compare two objects
> being an edge. If the LHS graph has unconnected
Thanks a lot Greg.
This is definitevely something I must look into.
-Stathis
Greg Barton wrote:
> One way of detecting cartesian products is to model the LHS as a graph,
> with object patterns being nodes, and conditions that compare two objects
> being an edge. If the LHS graph has unconnected
Swindells, Thomas wrote:
> Your problem is you have a series of 5 facts which have no dependent
> constraints between them, the constraint is only applied by the last fact
> and even that isn't constraining as it involves ors not ands (if there is
> a fact 5 that matches then every combination of v
Wolfgang Laun wrote:
> Are the constraints c9 == "R" true for all Facts of type
> fact1,...fact5?
> Is this actually the only constraint?
For the example rule I have posted, this is the only constraint.
The equality test for "R", in that case does not really prune the facts a
lot. The numbers
Hello List,
Issue: Too many ACTIVATION "candidates"
Sorry for the terminology, I'm sure it is not correct.
Background Information:
- Drools.5.0.1
- using StatefulKnowledgeSession
- logging through KnowledgeRuntimeLoggerFactory.newConsoleLogger()
- after each session creation, rules are inserted
Hi,
Assuming you can have your rules in a byte[], you can use something along
the lines of:
bytes[] KB = ... your rules ...
KnowledgeBuilderConfiguration builderConf =
KnowledgeBuilderFactory.newKnowledgeBuilderConfiguration();
KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowle
Edson Tirelli wrote:
> I believe this is fixed in Drools 5.1.1, as in 5.0.1 declared
> beans where not implementing the Serializable interface. Please try
> 5.1.1 and let us know if you still see the problem.
Unfortunately I am the final stages of my project and cannot afford to
switch Drools
Wolfgang Laun wrote:
> The suggested workaround (before this was fixed) is to use
>count(1)
> which achieves the same effect.
> -W
Thanks a lot Wolfangm, it now works as a charm!
-Stathis
>
> On 11 November 2010 19:30, wrote:
>> Hi List,
>>
>> I'm trying to count the number of objects I ha
Edson Tirelli wrote:
>Can you show us the stack trace? What version of Drools are you using?
I am using Drools.5.0.1.
For this accumulate:
v945 : Number ( doubleValue >= 1 ) from accumulate ( p : t_1 ( c_6 >=
20100512 && c_7 == "5" ) , count(p) )
stack trace follows:
EXCEPTION ERROR
jav
Hi List,
I'm trying to count the number of objects I have in the Working Memory
using accumulate, but I'm having a ClassCastException thrown at me.
Using a variant with collect, everything work OK.
Can someone shed some light on this issue?
Is it related to https://jira.jboss.org/browse/JBRULES-
Michael Anstis wrote:
> If you use a StatelessKnowledgeSession you won't need to remove the old
> facts.
>
> If however you want to use a StatefulKnowledgeSession for other reasons
> the
> insert method returns a FactHandle that can be later used to retrieve the
> fact: ksession.retract(factHandle)
Wolfang,
Wolfgang Laun wrote:
> Don't be too keen on using "from" in connection with queries. The simple
> reason is that queries return nothing but what rules can do just as well.
>
> Thus, getting all pairs of Person's and Restaurant's with matching "food"
> and "zipcode", the straightforward LH
Hello list,
I'm using Drools.5.0.1 and I am trying to comprehend how to used the
"from" keyword over a named query.
I've googled this:
http://blog.athico.com/2007/06/chained-from-accumulate-collect.html
where it states:
p : Person( )
Restaurant( food == p.favouriteFood )
from
Edson Tirelli wrote:
>Looks like a bug on the type enforcement that Drools and MVEL try to
> apply. Even with the generic type erasure, there should be no problems
> with
> either expression.
>
>What specific versions of Drools and MVEL are you using?
I am using Drools.5.0.
I do not know t
Wolfgang Laun wrote:
> 2010/1/31
>
>> Wolfang,
>>
>> thank you very much for your reply.
>>
>> Your assumptions are correct and your explanation makes sense.
>> Unfortunately, I cannot understand why this happens.
>>
>>
> It may very well be an implementation restriction; whether it can be
> remov
Wolfang,
thank you very much for your reply.
Your assumptions are correct and your explanation makes sense.
Unfortunately, I cannot understand why this happens.
Let me explain things a bit.
I will use the shorthand notation "IUEcop" to refer to the
"incrementalUpdateOfEconomicOperators" object.
Can you please explain why the second form of the same (as it seems to me)
rule does not work?
This works:
rule "takeTwo"
when
$c : CD713AType(
Body.incrementalUpdateOfEconomicOperators.traderAuthorisation.size !=
0 )
$t : TraderAuthorisationType ( $t.OperatorRole.size == 0) from
$c.Bod
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