Re: [rules-users] Calling a function from When part
Hey laune, I think we are mixing up the things. My requirement is to call a method in an helper class, that in turn accesses the db. Currently i have done with */evel(functionCall() )/* //The return type of the method is boolean *But the problem is, once the control enters WHEN part of the rule it making multiple calls to this method ( checked by putting in SYSO statements). But i want this call to take place once.* So it will be very helpful, if any once can suggest me any other way to make function call from when part. Also tried with /*$A : Boolean() from functionCall( ) eval( $A )*/ But the result is same. Also please provide your inputs if it is not possible to handle the problem, where in it make multiple function call. Regards, Sam -- View this message in context: http://drools.46999.n3.nabble.com/Calling-a-function-from-When-part-tp4018987p4019024.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Calling a function from When part
Hi Sam, Probably your best bet would be to create a separate rule, which evaluates the function in the RHS and inserts a fact encapsulating the results into working memory. That can be set to no-loop or to have a negative match on the fact it creates. rule eval function no-loop when $request : RequestFact() then FunctionResult result = functionCall(); insertLogical(result); end rule business rule when $request : RequestFact() $functionResult : FunctionResult() then // do something end … or something vaguely similar. This way your function call is only evaluated once, and the business rule does not fire until the function has been evaluated. Steve On 6 Aug 2012, at 08:34, RulesUsers wrote: Hey laune, I think we are mixing up the things. My requirement is to call a method in an helper class, that in turn accesses the db. Currently i have done with */evel(functionCall() )/* //The return type of the method is boolean *But the problem is, once the control enters WHEN part of the rule it making multiple calls to this method ( checked by putting in SYSO statements). But i want this call to take place once.* So it will be very helpful, if any once can suggest me any other way to make function call from when part. Also tried with /*$A : Boolean() from functionCall( ) eval( $A )*/ But the result is same. Also please provide your inputs if it is not possible to handle the problem, where in it make multiple function call. Regards, Sam -- View this message in context: http://drools.46999.n3.nabble.com/Calling-a-function-from-When-part-tp4018987p4019024.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Drools with Gemfire
I'm looking into integrating Drools with a system that has large (40GB+) Gemfire Maps. The rules would need to access the Gemfire Maps, which can be updated at any time.I understand I can't access the Gemfire Maps as global data since they aren't immutable. Inserting the maps also doesn't seem like a good idea either since I'd have to call modify() frequently on Maps with as many as 1M elements.Is there any alternative for accessing large amounts of changing data? thanks for your help, Rich -- View this message in context: http://drools.46999.n3.nabble.com/Drools-with-Gemfire-tp4019026.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Matching consecutive events
May be something with the internal clock and timestamps assigned as events dates and inclusive (or not I don't remember) bounds in after/before operators evaluation ... in short, I am not sure of the expected result if all your event (or 2 among your 3 events) have the same event date. But apart from that, may be you can implement a Listener (on insert callback) that maintains an explicit insertion order directly inside the event. This way, no need to use complex LHS to test that an event is directly preceeded by another. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Matching consecutive events
Hi Jaro, This might be a side effect of the temporal reasoning algorithm when using unbounded intervals like you are doing (i.e., using before and after operators without an interval parameter). Assuming this is what is happening, the activation is probably scheduled, but it only happens when the next activity is about to happen inside the session. With the current version, I can only suggest two workarounds. Either: * Use straight relational operators in your rule (, ). E.g.: $ev2 : LocalizationEvent( ..., timestamp $ev1.timestamp ) ... * Or, try to use bounded temporal operators. E.g.: $ev2 : LocalizationEvent( ... this after[0,60s] $ev1 ) ... We know it is not ideal, and for the next Drools release we are implementing explicit sequence operators where you will be able to just define [strict] sequencing. E.g.: when $ev1 : LocalizationEvent( ... ) = $ev2 : LocalizationEvent( ... ) then ... Details here: https://community.jboss.org/wiki/EventSequencing#4_Definition_Sequence_Conditional_Elements Edson On Wed, Aug 1, 2012 at 5:52 AM, jpullmann jaroslav.pullm...@fit.fraunhofer.de wrote: Dear contributors, this rule is expected to match a sequence of 2 consecutive events: rule test when // a) $ev1 : LocalizationEvent( type == TYPE.HINT, $target : target ) from entry-point events/localization $ev2 : LocalizationEvent( type == TYPE.HINT, target == $target, this after $ev1 ) from entry-point events/localization // b) // Ev1 directly followed by ev2: no other HINT in between not( LocalizationEvent( type == TYPE.HINT, target == $target, this after $ev1, this before $ev2 ) from entry-point events/localization ) then do() end The second event is interpreted as a confirmation of the first event (a). No other (deviating) event is allowed between them (b). With this restriction in place, the rule requires a sequence of 3 input events for activation, otherwise 2 events are sufficient (as expected). The events are ordered correctly and it is not obvious, why a third event is needed since the interval between ev1 and ev2 is closed ? This leads to an unnecessary delay in rule activation.. How could this be avoided and are there other approaches to match a concrete event sequence pattern ? Many thanks Jaro -- View this message in context: http://drools.46999.n3.nabble.com/Matching-consecutive-events-tp4018980.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli JBoss Drools Core Development JBoss by Red Hat @ www.jboss.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Apply role to whole class hierarchy
I had the same strange problem some time ago (last winter), but I never managed to reproduce a small sample I checked, and my problematic class hierarchy also lived in different packages (and never tried that that for my smaller samples) . - Mail original - De: Joerg Henne hennejg+nab...@googlemail.com À: rules-users@lists.jboss.org Envoyé: Lundi 30 Juillet 2012 16:04:50 Objet: Re: [rules-users] Apply role to whole class hierarchy After some debugging I was able to shed some light on what causes the problem, even if I don't fully understand it. The problem is produced by the event base class, which is declared with @role(event), i.e. (VSCPEvent) living in a different package than the ButtonEvent. If I move then into the same package, everything works just fine. The two package instances are merged in PackageBuilder.mergePackage(...), but the RuleBuilder still seems to operate on two separate instances, one with the declarations and Package.isEvent(...) returning true for the ButtonEvent and the other without them. Unfortunately, as I know too little about the workings of the various builders, I can't provide you with a ready-made idea of how to fix the problem. See https://issues.jboss.org/browse/JBRULES-3587 Thanks Joerg -- View this message in context: http://drools.46999.n3.nabble.com/Apply-role-to-whole-class-hierarchy-tp4018930p4018963.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Drools with Gemfire
Hi Rich On 08/06/2012 03:26 PM, rtella wrote: I'm looking into integrating Drools with a system that has large (40GB+) Gemfire Maps. The rules would need to access the Gemfire Maps, which can be updated at any time.I understand I can't access the Gemfire Maps as global data since they aren't immutable. Inserting the maps also doesn't seem like a good idea either since I'd have to call modify() frequently on Maps with as many as 1M elements.Is there any alternative for accessing large amounts of changing data? We had quite a similiar use case (financial instruments, millions of associated prices in a Gemfire map, need to reason over many (~100'000) instruments, in some cases taking price data (~300mio) into account). We ended up asserting the instruments as facts into WM, do the majority of the reasoning on them, and when really required, accessing the prices from the Gemfire map with a from conditional expression For example: WHEN i : Instrument ( assetClass == Bond ) ps : PriceSeries ( instrumentId = i.id, priceType = EndOfDay ) price : Price ( ) from ps.getPrices()// her we access the Gemfire map . So instruments and price series (in our case) are facts in WM, while the prices stay in the Gemfire maps. Of course, that has the drawback that we can not react directly to new or modified prices. Which in our case was ok. Only a minority of the rules needed to take prices into account at all, so we first fired all rules that did not access the maps, retracting all instruments we could. Then the rules with lower salience that accessed the maps fired. -- CU, Joe ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Question with Persisting Knowledge Sessions Then Upgrading Drools
I have been working on persisting knowledge sessions to an H2 database that are used for long running processes. The question I have is surrounding the following description: -- A stateful knowledge session is created using the JPAKnowledgeService and persisted to a database. -- A process is started within the knowledge session. -- The process contains a human task blocking the completion of the process. Because the stateful nature of the knowledge session, an instance of the process is inserted into the processinstanceinfo table and an instance of the human task is inserted into the task table. State is therefore maintained until the human task is completed and the process can continue execution. While the knowledge session, process and human task are awaiting completion, is it possible to upgrade the version of Drools/jBPM being used? Will the upgrade effect the de-serialization of the objects from the database or will they be able to be retrieved and used as before? Is there a best practice for accomplishing upgrading drools versions with knowledge sessions that may have been previously existing? Thanks, - Darin ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Comparison operation requires compatible types when using Date literal inside nested OR
I'm new to drools, so hopefully I can post enough information to get some help.
We are running Drools 5.3.3.Final (though we've seen the same issue with
5.4.0.Final and 5.3.0.Final)
I'm trying to test some rules created in drl format. Here's an example of a
drl that executes fine – it checks a birthday field against a date literal:
--
package drools.rules.funnelid.two
import com.infusionsoft.bpm.services.TestRuleFact;
rule Test Rule
dialect java
when
$testRuleFact : TestRuleFact( ( contactable.contact.birthday 29-Dec-1977 ) )
then
$testRuleFact.setTrue( );
end
---
However, this drl fails compilation with the following error:
package drools.rules.funnelid.two
import com.infusionsoft.bpm.services.TestRuleFact;
rule Test Rule
dialect java
when
$testRuleFact : TestRuleFact( ( contactable.contact.title str[equals] Owner
contactable.contact.birthday 01-Jan-1980 ) || (
contactable.contact.country str[equals] USA
contactable.contact.leadSourceIdOverride == 12 ) )
then
$testRuleFact.setTrue( );
End
--
Here's the error I get:
DRL contains errors, no actions will be processed: Unable to Analyse Expression
str0.evaluate( contactable.contact.title, Owner )
contactable.contact.birthday 01-Jan-1980 || str1.evaluate(
contactable.contact.country, USA )
contactable.contact.leadSourceIdOverride == 12:
[Error: Comparison operation requires compatible types. Found class
java.util.Date and class java.lang.String]
[Near : {... ) contactable.contact.leadSourceIdOverride == 12 }]
^
[Line: 8, Column: 32] : [Rule name='Test Rule']
Some things that cause the error to go away:
* Removing the offending clause: contactable.contact.birthday
01-Jan-1980
* Changing the || to an
I'm at a loss and would love some help. Even if I knew which class was raising
the exception would help, but I can't seem to find it anywhere.
Thanks,
Eric
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[rules-users] Guvnor/Designer: How to assign a global variable to a dataInput?
For Service Task in Guvnor now is possible to add assignments using the Editor for Data Assignments. Very nice! This editor helps the business users by showing the process variables defined and Service Task's dataInputs. It doesn't show though any defined global variable. Is possible to assign a global variable to one of the Service Task's dataInput? Will it be included in future Guvnor/Designer release? Thanks in advance, Xmithj -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-Designer-How-to-assign-a-global-variable-to-a-dataInput-tp4019034.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Guvnor/Designer: How to assign a global variable to a dataInput?
You are right, the editor is not pulling in globals currently - can you raise a jBPM Jira for this and I'll make sure it gets added in the next release version? Thanks Tihomir On 8/7/12 1:00 AM, xmithj wrote: For Service Task in Guvnor now is possible to add assignments using the Editor for Data Assignments. Very nice! This editor helps the business users by showing the process variables defined and Service Task's dataInputs. It doesn't show though any defined global variable. Is possible to assign a global variable to one of the Service Task's dataInput? Will it be included in future Guvnor/Designer release? Thanks in advance, Xmithj -- View this message in context: http://drools.46999.n3.nabble.com/Guvnor-Designer-How-to-assign-a-global-variable-to-a-dataInput-tp4019034.html Sent from the Drools: User forum mailing list archive at Nabble.com. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
