Guided Rule Editor inconsistency for DSL's
by drdaveg
I've noticed that the LHS of the Eclipse Guided Rule Editor can employ DSL
sentences or an object model, but there doesn't seem to be a manner to
incorporate the DSL on the RHS of rules (other in "free form" code)
Is that by design? Or is there some property that can enable the dialog
box/drop-down list editing of rules in the DSL on the RHS?
It seems odd that the capability works out-of-box for the left hand side,
but not the RHS. Thanks!
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14 years, 9 months
Re: [rules-users] Basic doubt regarding Drools Fusion - @expires
by Greg Barton
Yes, but I just fired up a small project using it and it used 100% of CPU. If you build the attached project you'll see the tests run just fine. (They use fireAllRules.) If you launch from the commandline, ("java -jar target/DroolsBoxes-1.0.jar") which uses fireUntilHalt, the rules fire (and complete) just fine, but it continues to use 100% of a cpu core indefinitely. This is with 5.1.1. If I change the drools version to 5.2.0-SNAPSHOT it compiles but the tests won't run. They all fail with the following exception:
java.lang.NoSuchMethodError: org.drools.spi.DeclarationScopeResolver.<init>([Ljava/util/Map;Ljava/util/Stack;)V at org.drools.rule.builder.RuleBuildContext.<init>(RuleBuildContext.java:72) at org.drools.compiler.PackageBuilder.addRule(PackageBuilder.java:1198) at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:629) at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:278) at org.drools.compiler.PackageBuilder.addKnowledgeResource(PackageBuilder.java:451) at org.drools.builder.impl.KnowledgeBuilderImpl.add(KnowledgeBuilderImpl.java:28) at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:75) at com.sample.DroolsTest.go(DroolsTest.java:31) at com.sample.BoxTest.test0(BoxTest.java:21)
--- On Thu, 3/17/11, Edson Tirelli <ed.tirelli(a)gmail.com> wrote:
From: Edson Tirelli <ed.tirelli(a)gmail.com>
Subject: Re: [rules-users] Basic doubt regarding Drools Fusion - @expires
To: "Rules Users List" <rules-users(a)lists.jboss.org>
Date: Thursday, March 17, 2011, 10:47 AM
To be honest, I believe so, but didn't profiled it extensively. I used fireUntilHalt() in my Webinar yesterday on a live demo and it worked nicely.
Edson
2011/3/17 Greg Barton <greg_barton(a)yahoo.com>
Has the performance problem with fireUntilHalt been fixed in 5.2?
--- On Thu, 3/17/11, Makewise - Vitor Rui Mendonça <Vitor.Mendonca(a)brisa.pt> wrote:
From: Makewise - Vitor Rui Mendonça <Vitor.Mendonca(a)brisa.pt>
Subject: Re: [rules-users] Basic doubt regarding Drools Fusion - @expires
To: "'Rules Users List'" <rules-users(a)lists.jboss.org>
Date: Thursday, March 17, 2011, 7:01 AM
Hi Thomas, thanks for the info!
I googled it quite a bit and I think it’s a path to be explored, albeit I’ve saw several messages on the mailing list regarding performance issues
when using fireUntilHalt.
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JBoss by Red Hat @ www.jboss.com
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14 years, 9 months
Basic doubt regarding Drools Fusion - @expires
by Makewise - Vitor Rui Mendonça
Hi all!
I’ve got a really basic doubt… I’ve read several documentation regarding it but I think I need some advice here…
Imagine that I have an event:
declare A
@role( event )
@expires( 1h )
end
On my Java code, I call “fireAllRules()” method every time that I put an event into the working memory.
My doubt: When does event A expires?
a) One hour after it was inserted (time-based and without the “fireAllRules()” method call) or
b) by calling “fireAllRules()” method (event-based)
T.I.A.
Vítor Mendonça Moreira
Analista / Programador
Direcção de Investigação e Desenvolvimento
Rua Dr. Francisco Sá Carneiro, nº. 4 r/c esq.
2500 - 206 - Caldas da Rainha
Tel: (+351) 262 832 196
Fax: (+351) 262 186 455
Web: www.makewise.pt<http://www.makewise.pt>
Uma empresa: Grupo Sousa Pedro<http://www.sousapedro.com>
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14 years, 9 months
Re: [rules-users] drools design question
by Esteban Aliverti
You could also use drools (maybe a decision table) to select the different
drl files.
Best regards,
El mar 16, 2011 8:24 p.m., "marunam" <sutavis(a)gmail.com> escribió:
Hi,
We are developing an insurance application and we have decided to use drool
rules for our business rules
Now, we could have global business rules(applies to all states), specific to
state, specific to factor X, specific to factor Y etc. This way we are
expecting many drl files.
Now, when the application runs, we would know the values for state, factor
X, factor Y etc. and using these values we would determine(using database)
which drl files to load dynamically and just run the rules in those drls.
Is this approach recommended? Do you have any suggestions?
Thanks
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14 years, 9 months
Custom dates with @date-effective and @date-expires
by Faisal Shafique
Hi,
Can I use any arbitrary date for the drools execution so that correct rules are fired based on not current date but any arbitrary date? This is in the context of @date-effective and @date-expires metadata that can be specified as part of a rule. Drools expert documentation seems to imply that this metadata uses "current date" though I am not clear what current date (system date?) means.
Thanks
Faisal Shafique
14 years, 9 months
Problem with Drools debuggin in Eclipse Reg:
by Murali Venugopal
Hi,
I'm encountering a strange problem with debugging an Drools application
in Eclipse Platform. I couldn't find any help in the internet. Also, i
can't find any previous post in this mailing list. Please try to help me.
My Platform details are below:
OS: Fedora 13
Eclipse: Galileo
Java: JDK 1.6 Update 21
Drools version: 5.1.1
Snapshot of the Error message:
*Console Output:*
ERROR: transport error 202: connect failed: Connection refused
ERROR: JDWP Transport dt_socket failed to initialize, TRANSPORT_INIT(510)
JDWP exit error AGENT_ERROR_TRANSPORT_INIT(197): No transports
initialized [../../../src/share/back/debugInit.c:690]
FATAL ERROR in native method: JDWP No transports initialized,
jvmtiError=AGENT_ERROR_TRANSPORT_INIT(197)
*Event Details:*
**
*Message:*
An internal error occurred during: "Launching DroolsTest (4)".
*Exception Stack Trace:*
java.lang.IncompatibleClassChangeError: Expected static method
org.drools.eclipse.launching.DroolsVMDebugger.renderCommandLine([Ljava/lang/String;)Ljava/lang/String;
at
org.drools.eclipse.launching.DroolsVMDebugger.run(DroolsVMDebugger.java:182)
at
org.eclipse.jdt.launching.JavaLaunchDelegate.launch(JavaLaunchDelegate.java:101)
at
org.drools.eclipse.launching.DroolsLaunchConfigurationDelegate.launch(DroolsLaunchConfigurationDelegate.java:30)
at
org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:853)
at
org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:703)
at
org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:866)
at
org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1069)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Thanks in advance.
Regards,
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14 years, 9 months
Open file leak in Drools Compiler
by Chris Selwyn
I am running Drools (actually JBoss Rules 5.1.0 ) in Glassfish.
My deployable is an EJB that uses a StatelessKnowledgeSession to run
some rules that I get from a KnowledgeAgent that has a Changeset with a
.drl in it.
Therefore, I have placed the drools compiler into the deployable and it
all appears to work.
Glassfish has a clever little mechanism that, when you unload a
deployable that had some open streams, it tells you all about it (and
kindly closes them).
Glassfish is reporting that InputStreams are being left open that were
opened in the isPackage() method of
org.drools.commons.jci.compilers.EclipseJavaCompiler.
That method has the following code in it:-
final InputStream is =
pClassLoader.getResourceAsStream(ClassUtils.convertClassToResourcePath(pClazzName));
if (is != null) {
return false;
}
So, when "is" is not null (i.e. open), it is forgotten about and not closed.
Isn't this a potential file handle leak?
Chris Selwyn
14 years, 9 months
Drools server link to Guvnor repository
by Sébastien Raickman
Hi all,
I would like to connect to drools-server with HTTPClient with the following
config:
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:drools="http://drools.org/schema/drools-spring"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://drools.org/schema/drools-spring
http://anonsvn.jboss.org/repos/labs/labs/jbossrules/trunk/drools-containe..."><drools:execution-node
id="node1" /> <drools:kbase id="kbase1"
node="node1"/>
<drools:kagent id="kagent1"
kbase="kbase1">
<drools:resources>
<drools:resource type="CHANGE_SET" source="classpath:changeset.xml"
/>
</drools:resources>
</drools:kagent>
<drools:ksession id="ksession1"
type="stateless" kbase="kbase1" node="node1"/>
</beans>
where my changeset.xml is adding a snapshot deployed with Guvnor.
But I am not able to trig the rule with the following client:
BatchExecutionCommandImpl command = new BatchExecutionCommandImpl();
command.setLookup("ksession1");
InsertObjectCommand insertObjectCommand = new InsertObjectCommand("TEST");
FireAllRulesCommand fireAllRulesCommand = new FireAllRulesCommand();
command.getCommands().add(insertObjectCommand);
command.getCommands().add(fireAllRulesCommand);
String xml = BatchExecutionHelper.newXStreamMarshaller().toXML(command);
HttpClient httpClient = new HttpClient();
httpClient.getHostConfiguration().setHost("host", 8080);
PostMethod postMethod = new
PostMethod("/drools-5.1.1-server/kservice/rest/execute");
postMethod.setRequestEntity(new StringRequestEntity(xml, null, null));
try {
httpClient.executeMethod(postMethod);
int code = postMethod.getStatusCode();
System.out.println(code);
String rep = postMethod.getResponseBodyAsString();
System.out.println(rep);
} catch(Exception e) {...}
Do someone have any idea how to achieve this?
Thanks
Sebastien
14 years, 9 months
[Urgent] Error in ontext assist in DSLR Editor
by hamza bakkali
Hi All,
I have been using drools 4 for couple of months now and I am starting to get
the hang of it. We recently decided to move to Dools 5 with Eclipse 3.4.2
(Ganymede).
We unfortunately hit a major 'show stopper' (for us). In the DSLR editor:
Context Assist + space + enter removes/replaces the whole line, not only the
place holder.
In other words:
DSL:
[*][]Log : {msg}=System.out.println("{msg}");
[*][]id1="some id label"
DSLR:
rule "MyRule"
when
then
end
If I Press L , control space --> the line Log:{msg} appears in the context
menu. Hit enter I get
Log :{msg}
Now, If want to replace msg by id1. I position the cursor in the {msg}, hit
ctrl space, id1 shows in the list. I hit enter the whole line disappear, and
I am left with
id1
instead of
Log : id1
Is this a setting somewhere in eclipse itself?? I doubt it.
The same thing use to work as expected in Drools 4.
thanks.
14 years, 9 months
Re: [rules-users] Problems with Guided Rule Editor in Eclipse
by John Peterson
I'm working in Eclipse only right now, but not using DSL for this particular situation (yet). I've manage to make the error go away by removing the package name from drools.package, however, when I attempt to run the code that builds the application to run the rule, it fails to resolve the Object (Fact) used in the rule.
Copying the generated DRL to a .drl file works fine.
>Date: Wed, 16 Mar 2011 18:20:33 +0100
>From: Vincent Legendre <vincent.legendre(a)eurodecision.com>
>Subject: Re: [rules-users] Problems with Guided Rule Editor in Eclipse
>To: Rules Users List <rules-users(a)lists.jboss.org>
>Message-ID: <4D80F161.3080403(a)eurodecision.com>
>Content-Type: text/plain; charset=ISO-8859-1; format=flowed
>
>I was pretty sure to have seen something about sample BRL from Guvnor appears in error in eclipse.
>I can find some on JIRA, but never the same problem I have ... May be on another forum, but not JIRA ...
>
>Anyway, my problem is using DSL in BRL opened with eclipse plugin Guided Editor. Seems that the transformation to DRL is incomplete for DSL
>sentences, and action part cannot add DSL sentences. I will try with the last version and see if it is still there, and then post a clear new JIRA...
>
>But, re-reading your post, may be your problem is different ... As far I can remember, BRL with no DSL in it works ok ... try to copy your generated DRL >in a new DRL file to see what happens
14 years, 9 months
