8:34 a.m.
Hello again,
I am sorry that i duplicated the question!.
I have one last question and I will close my questions both in stackoverflow and here.
Is my understanging correct? I have two options:
1. To have my business logic classes in my java Drools project.
2. Find a way to generate these classes in my java Drools project.
But in any case available I do need the java classes to create and feed facts to the
Drools? There is no way to feed Drools with any type of structured data that defines the
fact without creating the instance? (It will be my responsibility to find the way of
generation.)
Once again Big thanks for your time, and sorry for the duplication of the question!
Regards,
Milen
PS: About the language that I am using its really uncommon one, I seriously doubt that the
name will help you. Offcourse here it is - GraphTalk.
From: Wolfgang Laun wolfgang.laun(a)gmail.com
About: Re: [rules-users] How to call Drools as a remote rules executor
To: Rules Users List
sent at: Monday, 2013, December 9 13:27:22 CET
I've provided one possible approach on stackoverflow.
[Not knowing what "non-Java" is doesn't help.]
-W
On 09/12/2013, milen igrachev igrachev(a)abv.bg > wrote:
Hello ,
What I want to do is use java and Drools for its nice rule engine
capabilities. Currently I am not using java for my project. I have
some
implementation business classes and implemented logics that works
fine for
me, but I want to externalize the rules in BRMS. I gave Drools a try
and I
like it a lot. However I encounter one obsticle that I want to ask if
I can
skip. I read most of the Drools documentation and across the net in
all the
examples that are given we actually need the implementation business
classes
in order to instantiate facts that we want to feed to the Drools
KieSession . Well what I want is not to duplicate my class model in
both my
(non java) project and my java Drools project. All I want to keep in
my
Drools project is the Rules themselves. So is that possible, or I
will need
to duplicate the models? If anyone knows where I can read some info
on that
topic links are appriciated! Technical details: I am using Drools
6.0.0 in
Eclipse Juno. Big thanks for the support! Best Regards!
Milen
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9:11 a.m.
New subject: How to call Drools as a remote rules executor
On 09/12/2013, milen igrachev <igrachev(a)abv.bg> wrote:
Hello again,
I am sorry that i duplicated the question!.
I have one last question and I will close my questions both in stackoverflow
and here.
Is my understanging correct? I have two options:
1. To have my business logic classes in my java Drools project.
Certainly.
2. Find a way to generate these classes in my java Drools project.
But in any case available I do need the java classes to create and feed
facts to the Drools? There is no way to feed Drools with any type of
structured data that defines the fact without creating the instance? (It
will be my responsibility to find the way of generation.)
Well, there's the DRL declare, which is one way of defining fact types
to Drools.
But you'd still have to create objects from these fact types and to inject the
data (in the constructor). Which means that you'll have to have a way
of creating these declares, and a way of getting the data into the
Java app encapsulating the Drools session, and a way of instantiating
the objects.
As I said on stackoverflow, using XML as a gofer might be easier: it's
simple on the Java side, but I don't know the other end.
-W
Once again Big thanks for your time, and sorry for the duplication of the
question!
Regards,
Milen
PS: About the language that I am using its really uncommon one, I seriously
doubt that the name will help you. Offcourse here it is - GraphTalk.
From: Wolfgang Laun wolfgang.laun(a)gmail.com
About: Re: [rules-users] How to call Drools as a remote rules executor
To: Rules Users List
sent at: Monday, 2013, December 9 13:27:22 CET
I've provided one possible approach on stackoverflow.
[Not knowing what "non-Java" is doesn't help.]
-W
On 09/12/2013, milen igrachev igrachev(a)abv.bg > wrote:
> Hello ,
> What I want to do is use java and Drools for its nice rule engine
> capabilities. Currently I am not using java for my project. I have some
> implementation business classes and implemented logics that works fine
> for
> me, but I want to externalize the rules in BRMS. I gave Drools a try and
> I
> like it a lot. However I encounter one obsticle that I want to ask if I
> can
> skip. I read most of the Drools documentation and across the net in all
> the
> examples that are given we actually need the implementation business
> classes
> in order to instantiate facts that we want to feed to the Drools
> KieSession . Well what I want is not to duplicate my class model in both
> my
> (non java) project and my java Drools project. All I want to keep in my
> Drools project is the Rules themselves. So is that possible, or I will
> need
> to duplicate the models? If anyone knows where I can read some info on
> that
> topic links are appriciated! Technical details: I am using Drools 6.0.0
> in
> Eclipse Juno. Big thanks for the support! Best Regards!
> Milen
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rules-users(a)lists.jboss.org
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9:32 a.m.
New subject: How to call Drools as a remote rules executor
I define my facts in DLR with the declare clause.
The method need the values of the facts to insert it into the knwoledge
base.
You can try this:
[my kbase is injected by spring]
StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
FactType factType = kbase.getFactType("my.package(defined in the DLR)",
"name_of_the_fact");
Object kFact = null;
try {
kFact = factType.newInstance();
} catch (InstantiationException e) {
throw new ApplicationException(e);
} catch (IllegalAccessException e) {
throw new ApplicationException(e);
}
factType.set(kFact, "fact_property_name(in_DLR)" ,
"fact_property_value(in
DLR)");
}
FactHandle factHandler = ksession.insert(kFact);
int numRulesFired = ksession.fireAllRules(100);
I hope this help you.
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participants (3)
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Alberto -
milen igrachev -
Wolfgang Laun