Problem with Guvnor+Jboss Console
by olfa rejeb
Dear Ms/Mr,
I have downloaded jbpm-install (jbpm-5.1.0.Final-installer-full) and
installed jbpm by “ant install.demo”.,After I execute “ant start.demo”,
However, seems to be going wrong when running the a web-based application
like the jbpm-console, Guvnor and the Designer :
I can’t access http://localhost:8080/jbpm-console and
http://localhost:8080/drools-guvnor by Google Chrome or Firefox? What can I
do?
And when I use eclipse to store bpmn diagram into Guvnor, I can’t use the
existent guvnor database, why ?
I attachedto the mail screenshots of the errors and the jbpm-installer/
jboss-5.1.0.GA/server/default/log directory.
Thank you for your response
Best Regards
--
REJEB.OLFA
Doctorante /PhD student
Centre Génie Industriel - Ecole des mines d'Albi-Carmaux
Campus Jarlard - Rte de Teillet - 81013 ALBI cedex 09
Mail: olfa.rejeb@mines-albi
Tél :+33 (0)5 63 49 32 66
--
REJEB.OLFA
Doctorante /PhD student
Centre Génie Industriel - Ecole des mines d'Albi-Carmaux
Campus Jarlard - Rte de Teillet - 81013 ALBI cedex 09
Mail: olfa.rejeb@mines-albi
Tél :+33 (0)5 63 49 32 66
--
REJEB.OLFA
Doctorante /PhD student
Centre Génie Industriel - Ecole des mines d'Albi-Carmaux
Campus Jarlard - Rte de Teillet - 81013 ALBI cedex 09
Mail: olfa.rejeb@mines-albi
Tél :+33 (0)5 63 49 32 66
14 years, 6 months
Property access on Java Beans (POJO's)
by kapokfly
This is what is documented
/"
Any bean property can be used directly. A bean property is exposed using a
standard Java bean getter: a method getMyProperty() (or isMyProperty() for a
primitive boolean) which takes no arguments and return something. For
example: the age property is written as age in DRL instead of the getter
getAge():
Person( age == 50 )
// this is the same as:
Person( getAge() == 50 )
Drools uses the standard JDK Introspector class to do this mapping, so it
follows the standard Java bean specification.
"/
Apparently this is from Spring:
"The StandardEvaluationContext is where you may specify the root object to
evaluate against via the method setRootObject() or passing the root object
into the constructor. You can also specify variables and functions that will
be used in the expression using the methods setVariable() and
registerFunction(). The use of variables and functions are described in the
language reference sections Variables and Functions. The
StandardEvaluationContext is also where you can register custom
ConstructorResolvers, MethodResolvers, and PropertyAccessors to extend how
SpEL evaluates expressions. Please refer to the JavaDoc of these classes for
more details.
"
Can drools do the same to allow custom resolver, which would be quite useful
in our use cases.
Ivan
-----
Ivan, your Panda, forever
--
View this message in context: http://drools.46999.n3.nabble.com/Property-access-on-Java-Beans-POJO-s-tp...
Sent from the Drools: User forum mailing list archive at Nabble.com.
14 years, 6 months
Guvnor: Work in progresss - Guided Decision Table editor and Template Data editor
by Michael Anstis
I am refactoring the mergable grid widget, used by the captioned, to an
event-based design and have pushed changes to the master branch in github.
I pushed the changes as Jervis Liu is completing a major re-organisation of
the Guvnor code-base this week and I didn't want to end up with merge
conflict hell :)
The changes, at this stage, are incomplete. Consequently the captioned
editors do not fully work at the moment in the master branch. 5.3.0.Final
is unaffected.
So, if you get the latest code github's master branch be warned. My changes
will complete this week or early next.
With kind regards,
Mike
14 years, 6 months
Re: [rules-users] Building our own UI for Drools
by GPatel＠tsys.com
On hosted mode:
I have the same requirement i.e hosted site with lots of external clients using the same site, it is indeed impractical to deploy a guvnor instance for each client. Overall, from what I have researched, there are two things available to segregate rules by external client: categories and packages, but I decided against using them to achieve client segregation. The approach I have arrived on is to launch the guvnor standalone editor from my website, store the brl in my tables (the standalone editor provides javascript hooks to allow retrieving the rule brl/drl once the rule has been written). Effectively, the only thing stored in the guvnor repository will be the model to enable rule authoring. Originally, I was planning on storing the rules in the guvnor repository and using the rest api to list rule packages (prefixed by clientId) in my site. Since I am able to retrieve the brl/drl anyways (via standalone editor javascript hook, or if that feature were not available, then via rest call immediately after rule has been authored), I decided to store the brl/drl in my app db. Since the rules are stored in my tables, I will have full control over client segregation.
I have done a mini-POC to prove that this will work and it seems like it will, unless an expert on this mailing list can point out showstoppers/potential flaws/shortcomings of this approach.
Hope this helps others who are faced with similar situations.
Thanks
G. Patel
----- Original Message -----
From: Jervis Liu [jliu(a)redhat.com]
Sent: 11/16/2011 05:14 PM ZE8
To: rules-users(a)lists.jboss.org
Subject: Re: [rules-users] Building our own UI for Drools
On 2011/11/16 16:37, kapokfly wrote:
> Thanks for the information.
>
> Deploy multiple GUNVOR instances can't resolve our issue as we have
> thousands of companies as our customer, each company will share the common
> part of our applications and meantime they can customize objects/fields they
> have permission with, this will be terrible if we go with the
> separate/dedicate deployment and basically we think that will be not
> manageable...
>
> What we are looking for is, be able to share a common collection of ruleset
> and at the same time, be able to define their custom rules with their
> customization.
At the moment, it is possible to achieve this by using
role-based-authorization in Guvnor. I.e., you create some common
packages that are designed to be shared by everyone. You assign
package-readonly permissions to everyone so that they have read-only
access to these common packages. You can also use Global Area to achieve
same effect. Essentially Global area is a special package that can be
shared by all packages. Then each user has package-admin permission for
their own packages.
The "Workspace" as I mentioned early will provide a more completely
isolated environment for each user when multiple users are sharing one
instance of Guvnor. However we dont have any concrete stories planned
for this yet.
Cheers,
Jervis
> Ivan
>
> -----
> Ivan, your Panda, forever
> --
> View this message in context: http://drools.46999.n3.nabble.com/Building-our-own-UI-for-Drools-tp350884...
> Sent from the Drools: User forum mailing list archive at Nabble.com.
> _______________________________________________
> rules-users mailing list
> rules-users(a)lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
_______________________________________________
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14 years, 6 months
class loading problems with 5.3.0-Final and 5.4.0-SNAPSHOT
by Mauricio Salatino
Hi guys,
I'm working here trying to find out a little problem that I'm having with
Drools 5.4.0-SNAPSHOT and 5.3.0-Final.
I'm using WSO2 container to deploy a very simple service and when a rule
gets activated the following exception appears (with 5.4.0-SNAPSHOT):
Exception in thread "Thread-44" java.lang.ClassCircularityError:
org/drools/rule/builder/dialect/asm/ConsequenceGenerator
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at
org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:262)
at
org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:105)
at
org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:540)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at
org.eclipse.core.runtime.internal.adaptor.ContextFinder.loadClass(ContextFinder.java:124)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at
org.drools.util.CompositeClassLoader$CachingLoader.load(CompositeClassLoader.java:262)
at
org.drools.util.CompositeClassLoader.loadClass(CompositeClassLoader.java:105)
at
org.drools.rule.JavaDialectRuntimeData$PackageClassLoader.loadClass(JavaDialectRuntimeData.java:540)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at
test.Rule_request_bed_ede4a687c29740c8bb9f13968941e6a1DefaultConsequenceInvoker.evaluate(Unknown
Source)
at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1091)
at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1029)
at org.drools.common.DefaultAgenda.fireUntilHalt(DefaultAgenda.java:1229)
at
org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:756)
at
org.drools.common.AbstractWorkingMemory.fireUntilHalt(AbstractWorkingMemory.java:732)
at
org.drools.impl.StatefulKnowledgeSessionImpl.fireUntilHalt(StatefulKnowledgeSessionImpl.java:234)
at
com.wordpress.salaboy.hospital.HospitalServiceImpl$1.run(HospitalServiceImpl.java:71)
I'm worried to see that I don't have any problems with 5.1.1 but with later
version all throw similar issues.
I will be trying to solve this issue, but if someone has a clue about what
can be happening here, please let me know.
I know that this can be a particular issue with WSO2, but it looks like
something has changed inside drools.
Cheers
--
- CTO @ http://www.plugtree.com
- MyJourney @ http://salaboy.wordpress.com
- Co-Founder @ http://www.jugargentina.org
- Co-Founder @ http://www.jbug.com.ar
- Salatino "Salaboy" Mauricio -
14 years, 6 months
Guvnor 5.3 : Guided Rule Editor : mixing formula and field constraint in same pattern makes editor crash
by Vincent LEGENDRE
Hi,
As said in the subject mixing formula and field constraint in same pattern makes the guided editor crash.
I had rules in 5.2, which was using such constructions, ie normal constraint for normal tests, and sometime a formula (which transform into in-pattern "eval(...)")
These rules cannot be opened by guvnor 5.3, but compiles.
When trying to rewrite the same rule in 5.3, everything is well until I add a "formula" constraint in a Pattern already having a "normal" constraint (or a normal after a formula).
If I let only one test type, all is fine.
Otherwise, the current condition becomes empty, the action part disappears, and there is no error message in logs. ...
It seems like a bug to me. Agreed ?
I could add my "eval" outside the pattern, but I also use such constructs in some accumulate patterns ... and I don't have any solution for them (except writing all that stuff directly in DRL format ...).
14 years, 6 months
Accumulate / collect
by Bruno Freudensprung
Hi all,
There is something I can't express using "collect" or "accumulate" and I
would like to have your opinion.
Let's imagine I have the following types :
# a country type
* declare Country
name : String
end
*
# a city type holding a reference to its country
* declare City
name : String
country : Country
end
*
Let's imagine I have all Country and City objects into the working memory.
I want to get the set of Countries corresponding to Cities whose name
starts with "X".
I have the impression that I need a kind of (nonexistent right?)
"collect" syntax that would look like the "accumulate" syntax (a kind of
"anonymous" accumulate function):
# meaning I want to collect $country objects and not City objects
$countries : HashSet() from collect (City($name matches "X.*",
$country : country)*, $country*)
Or a home made accumulate function that builds a set of countries:
# custom "buildset" accumulate function
$countries : HashSet() from accumulate (City($name matches "X.*",
$country : country), *buildset*($country))
Do you see any other (possibly out of the box) solution?
Many thanks in advance for your answers,
Best regards,
Bruno.
14 years, 6 months
