[rules-users] Suspicious behaviour when using a bound variable as a constraint in a pattern bound to the same var
Due to a bug we came up with the following rule: /* Rule intriguing when $foo: Foo( $foo.getBar() == null ) then ... */ Our original intention was to actually generate the rule like so: /* Rule intended when $foo: Foo( bar == null ) then ... */ In most cases the intriguing rule actually seem to behave much like the intended. We are unsure way. Moreover, we suspect that sometime we get wrong, or rather unexpected results when firing up this rule. -- View this message in context: http://drools.46999.n3.nabble.com/Suspicious-behaviour-when-using-a-bound-variable-as-a-constraint-in-a-pattern-bound-to-the-same-var-tp4029647.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] London (May 26th) Drools jBPM community contributor meeting
London, Chiswick, May 26th to May 30th During next week a large percentage of the Drools team, some of the jBPM team and some community members will be meeting in London (Chiswick). There won’t be any presentations, we’ll just be in a room hacking, designing, exchanging ideas and planing. This is open to community members who wish to contribute towards Drools or jBPM, and want help with those contributions. This also includes people working on open source or academic projects that utilise Drools or jBPM. Email me if you want to attend, our locations may very (but within chiswick) each day. We will not be able to make the day time available to people looking for general Drools or jBPM guidance (unless you want to buy us all lunch). But we will be organising evenings things (like bowling) and could make wed or thu evening open to people wanting general chats and advice. Email me if you’re interested, and after discussing with the team, I’ll let you know. Those currently attending: Mark Proctor (mon-fri) Group architect Edson Tirelli (mon-fri) Drools backend, and project lead Mario Fusco (mon-fri) Drools backend Davide Sottara (wed-fri) Drools backend Alex Porcelli (mon-fri) Drools UI Michael Anstis (thu-fri) Drools UI Kris Verlaenen (wed-thu) jBPM backend, and project lead Mauricio Salatino (mon-fri) jBPM tasks and general UI ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Suspicious behaviour when using a bound variable as a constraint in a pattern bound to the same var
Please don't write any more posts like this. You aren't asking a question, as far as I can see - so why do you post? You write, darkly, about suspicions of wrong or unexpected results (which, to be sure, isn't the same thing). This is a big help. -W On 22/05/2014, dec roni.frant...@gmail.com wrote: Due to a bug we came up with the following rule: /* Rule intriguing when $foo: Foo( $foo.getBar() == null ) then ... */ Our original intention was to actually generate the rule like so: /* Rule intended when $foo: Foo( bar == null ) then ... */ In most cases the intriguing rule actually seem to behave much like the intended. We are unsure way. Moreover, we suspect that sometime we get wrong, or rather unexpected results when firing up this rule. -- View this message in context: http://drools.46999.n3.nabble.com/Suspicious-behaviour-when-using-a-bound-variable-as-a-constraint-in-a-pattern-bound-to-the-same-var-tp4029647.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] Persistence in Drools 6
Hello All,
I am trying to set up persistence for a standalone Drools (6.0.1.Final)
application that uses JPA, Hibernate (4.3.5.Final) and Bitronix (2.1.4) via
Spring (4.0.3.RELEASE).
On the persistence side everything appears to be set up correctly. For my
Drools session I use a KieContainer to create a new stateful session using
an environment set up with the EntityManagerFactory and TransactionManager
set. The problem that I am experiencing however is that nothing is getting
persisted to the database. I have poured over the docs at least two dozen
times and searched the net for anything related.
Here is what my Spring context file looks like when creating the Drools
session...
bean id=kReleaseId factory-bean=kieServices
factory-method=newReleaseId
constructor-arg index=0 value=groupId/
constructor-arg index=1 value=artifactId/
constructor-arg index=2 value=1.0-SNAPSHOT/
/bean
bean id=kContainer factory-bean=kieServices
factory-method=newKieContainer
constructor-arg index=0 ref=kReleaseId/
/bean
bean id=kEnvironment factory-bean=kieServices
factory-method=newEnvironment
constructor-arg index=0
map
entry
keyutil:constant
static-field=org.kie.api.runtime.EnvironmentName.ENTITY_MANAGER_FACTORY//key
ref bean=entityManagerFactory/
/entry
entry
keyutil:constant
static-field=org.kie.api.runtime.EnvironmentName.TRANSACTION_MANAGER//key
ref bean=jtaTransactionManager/
/entry
/map
/constructor-arg
/bean
bean id=kSession factory-bean=kContainer
factory-method=newKieSession
constructor-arg index=0 ref=kEnvironment/
/bean
Since the application is standalone I execute fireAllRules on the session
at a regular interval (I use this instead of fireUntilHalt as it
dramatically reduces the CPU load on the machine). With each call I wrap it
in a transaction. Thus, the code looks as follows:
while (!Thread.currentThread().isInterrupted()) {
// Start a new transaction
UserTransaction utx = utx = (UserTransaction)new
InitialContext().lookup(java:comp/UserTransaction);
utx.begin();
// Tick the session
kSession.fireAllRules();
// Close the transaction
utx.commit();
// Sleep so that other applications can use the CPU
try {
Thread.sleep(1);
} catch (InterruptedException e) {
// When our sleep is interrupted it's because the executor
wants us to shut down.
Thread.currentThread().interrupt();
}
}
When I inspect kSession in the debugger I can see the environment is
properly set. I have tried digging down into the execute a bit but can't
find any point at which the TransactionManager or EntityManagerFactory are
used. As I said above I know Hibernate is set up correctly as well as
Bitronix. I can see them working just fine in the logs and they definitely
are hitting the database (and create tables for sessioninfo and
workingmemory as they should). I just get nothing actually in the database
stored, ever.
Any help here is appreciated. It seems like it should work but it just
doesn't.
Thanks in advance,
Jean-Philippe Steinmetz
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[rules-users] Cannot issue fireUntilHalt when using persisted session
Due to an issue with reloading persisted sessions that contained a cron timer rule, I upgraded to 6.1.0.Beta3. Now I'm encountering a problem with a threaded fireUntilHalt command (cannot be issued on a persisted session). Exception in thread SimpleAsyncTaskExecutor-1 java.lang.UnsupportedOperationException: Command session.fireUntilHalt(); cannot be issued on a persisted session at org.drools.persistence.SingleSessionCommandService$TransactionInterceptor.execute(SingleSessionCommandService.java:474) at org.drools.persistence.SingleSessionCommandService.execute(SingleSessionCommandService.java:353) at org.drools.core.command.impl.CommandBasedStatefulKnowledgeSession.fireUntilHalt(CommandBasedStatefulKnowledgeSession.java:272)... It worked without issue in 6.0.1.Final. Though I suspect not, is this expected behaviour? Alternately, are there configuration/other changes that must be implemented. Libs spring 4.0.1 kie, drools, jbpm 6.1.0.Beta3 hibernate 4.3.4 -- View this message in context: http://drools.46999.n3.nabble.com/Cannot-issue-fireUntilHalt-when-using-persisted-session-tp4029656.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] @propertyReactive not work when condition are coded in java
I have rule1 and rule2 and rule1 is modifying an object whose property is checked in the when part of rule2 and rule2 should fire. The problem is rule2 is not firing. When I took out the @PropertyReactive annotation, then rule2 will fire. After further investigation, I find the cause is because in the when part I am calling java function to do the comparison as suppose to using native operators like ==. Property Reactive seems to be not working when in the WHEN part of the rules we are calling java function to do the comparison as suppose to using native operators like ==, , , etc. Please advice. -- View this message in context: http://drools.46999.n3.nabble.com/propertyReactive-not-work-when-condition-are-coded-in-java-tp4029657.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] Using git-p4 with workbench
Hi, Has anyone tried using a VCS bridge for git with the Drools 6 workbench? Specifically I am interested in git-p4 so that I can access an existing maven project that is currently stored in Perforce. Is this use case supported? Thanks in advance, Jean-Philippe ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Rule for only one of the below exists, help please?
Have a look at the collect command. Something like: ArrayList( size == 1 ) from collect( LineItem (materialID == 'a' || == 'b' || == 'c' ) ) -- View this message in context: http://drools.46999.n3.nabble.com/Rule-for-only-one-of-the-below-exists-help-please-tp4029658p4029660.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] Using git-p4 with workbench
We use JGit and I don’t believe (but could be wrong) it has direct p4 support, like this git extension offers. http://git-scm.com/docs/git-p4 However Git is distributed, so just clone and sync a p4 repo with this Git command line tool and use it as an intermediary. Then merge/mirror this intermediary with our JGit repo. Mark On 22 May 2014, at 22:28, Steinmetz, Jean-Philippe jpsteinm...@theworkshop.us.com wrote: Hi, Has anyone tried using a VCS bridge for git with the Drools 6 workbench? Specifically I am interested in git-p4 so that I can access an existing maven project that is currently stored in Perforce. Is this use case supported? Thanks in advance, Jean-Philippe ___ 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] OptaPlanner VRPTW Benchmark?
Might anyone on the list have come across Gehring Homberger VRPTW benchmark http://www.sintef.no/Projectweb/TOP/VRPTW/Homberger-benchmark/1000-customers/ figures for Planner? Given that record performance in the benchmark is something to brag about https://www.youtube.com/watch?v=apiuF6Z8O1k in some circles when pitching an optimizer to business customers, it would be great to see how OptaPlanner stacks up! -- View this message in context: http://drools.46999.n3.nabble.com/OptaPlanner-VRPTW-Benchmark-tp4029663.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] Suspicious behaviour when using a bound variable as a constraint in a pattern bound to the same var
1. The constraints are equivalent. $foo is bound to the Foo object, and the getter does what the getter is supposed to do, and it's (probably) visible - so why shouldn't it compile. Version 5.3 or maybe even 5.2 has introduced general boolean expressions - are you using an older version? I don't know what you mean by being conditioned upon - do you understand the concept of binding? 2. Randomness should not matter. 3. Not seeing code that reproduces the issue, discussion is rather fruitless. -W On 22 May 2014 17:07, dec roni.frant...@gmail.com wrote: Apologies, I had wanted to know: 1. Is it expected that this two rules would behave the same given the same input? Not sure I understand how would it even compile and how would the var be conditioned upon before being assigned . 2. The input was just some random string. 3. The results are unexpected as we are getting a hit on this row even though the field is populated with some string. BUT what is suspicious is that it would seem we very rarely get this sort of behaviour. We also suspect if it has something to do with concurrency or multiple sessions concurrently executing. Most importantly, I would like to understand 1) - how is this even possible to come up with such a pattern and is it expected to behave like the intended rule -- View this message in context: http://drools.46999.n3.nabble.com/Suspicious-behaviour-when-using-a-bound-variable-as-a-constraint-in-a-pattern-bound-to-the-same-var-tp4029647p4029654.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
