Re: [rules-users] GWT Console - Drools Flow problems.
Hi Did u find any solution on this? i am facing the same issue but not on the guvnor, when i tried to use the drools:ksession tag , i have got all the above errors mentioned in your stack trace like... "could not commit or rollback session".."unable to rollback".. "Transaction is already completed...session closed or no session available" It is all from at org.drools.persistence.session.SingleSessionCommandService.(SingleSessionCommandService.java:130) It really frustrates that i can't get any proper docs/direction available on this. any soln/help wud be much appreciated. Thanks -drooRam -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/GWT-Console-Drools-Flow-problems-tp998635p1066321.html Sent from the Drools - User 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 rule flow in Guvnor
have you found the solution? because i have a similiar problem. thanks. -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Using-rule-flow-in-Guvnor-tp1057004p1066016.html Sent from the Drools - User 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] functions inside fact type declaration?
Hehe, ok, you convinced me Greg! ;)
https://jira.jboss.org/browse/JBRULES-2652
Edson
2010/8/9 Greg Barton
> +1 on the full constructor.
>
> GreG
>
> On Aug 9, 2010, at 3:58 PM, Edson Tirelli wrote:
>
> I thought about adding that, but I feel like we would just be
> reimplementing java, in this case. So, if you need anything else other than
> simple java beans, you should implement it as a java class.
>
> Regarding the constructor, I might still add a constructor that
> receives all fields as parameters, just to reduce verbosity when using the
> java dialect, but if you are using mvel dialect, you can use "with":
>
> rule ...
> when ...
> then
> with( person = new Person() ) {
> name = "Bob",
> age = 35
> }
> insert( person );
> end
>
> Edson
>
> 2010/8/9 Tina Vießmann <
> tviessm...@stud.hs-bremen.de>
>
>> Hi,
>>
>> is it possible to define a function/constructor inside a fact type
>> declaration? If yes, how can it be done?
>>
>> Thank you :)
>> Tina
>> ___
>> rules-users mailing list
>> rules-users@lists.jboss.org
>>
>> https://lists.jboss.org/mailman/listinfo/rules-users
>>
>
>
>
>
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[rules-users] drools in a SOA environment
I have some questions regarding the overall view of what is happening where when using Drools in a service oriented environment. This is the idea: Some applications are making use of rules for some calculations. The idea is to be able to call the rule engine as a service. Meaning: passing all facts to the rule base and based on that, rules will be fired and the facts will be updated. Rules will be called a lot so scalability is important. Next to that: the conclusion part should be able to call other services, eg. to do some calculations. An ESB is available so communication could go over that bus. Now: this is how I see it: Drools Guvnor is the place where the rules are stored and managed. (war) Drools Server is where the actual calculations take place. (war but... when more load must be handled, multiple instance could be deployed). The application does a SOAP call to Drools Server (passes facts and commandos) and all is ok... Well .. now the problem starts... I don't get it :) I mean: how does Drools Server talk to the rule base ? I haven't found a clear article (but probably it does exist, just didn't find it yet) where this cooperation is demonstrated. Also: I read about Camel / Spring / Rest which would be the new way to call a service... So SOAP is no longer supported (or will be deprecated as of Drools v5.x ?) An overview and / or some best practices on how to design the architecture would be welcome. Btw, as I understand it now, Drools - grid will be the way to go. But that will probably will be for version > 5.2. And then again, I am confused about the split between the rule 'engine' (I have been told that there is not such a thing as a big calculating engine) and the rule repository. I kind of would expect that those two could be coupled tightly together (ok, there is probably a good reason why choices are made as they are, I am way too newbie to interfere in any such discussion). Sincerely, Dieter D'haeyere. ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] functions inside fact type declaration?
+1 on the full constructor.
GreG
On Aug 9, 2010, at 3:58 PM, Edson Tirelli wrote:
I thought about adding that, but I feel like we would just be
reimplementing java, in this case. So, if you need anything else other than
simple java beans, you should implement it as a java class.
Regarding the constructor, I might still add a constructor that receives
all fields as parameters, just to reduce verbosity when using the java dialect,
but if you are using mvel dialect, you can use "with":
rule ...
when ...
then
with( person = new Person() ) {
name = "Bob",
age = 35
}
insert( person );
end
Edson
2010/8/9 Tina Vießmann
Hi,
is it possible to define a function/constructor inside a fact type
declaration? If yes, how can it be done?
Thank you :)
Tina
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--
Edson Tirelli
JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
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Re: [rules-users] functions inside fact type declaration?
I thought about adding that, but I feel like we would just be
reimplementing java, in this case. So, if you need anything else other than
simple java beans, you should implement it as a java class.
Regarding the constructor, I might still add a constructor that receives
all fields as parameters, just to reduce verbosity when using the java
dialect, but if you are using mvel dialect, you can use "with":
rule ...
when ...
then
with( person = new Person() ) {
name = "Bob",
age = 35
}
insert( person );
end
Edson
2010/8/9 Tina Vießmann
> Hi,
>
> is it possible to define a function/constructor inside a fact type
> declaration? If yes, how can it be done?
>
> Thank you :)
> Tina
> ___
> rules-users mailing list
> rules-users@lists.jboss.org
> https://lists.jboss.org/mailman/listinfo/rules-users
>
--
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JBoss Drools Core Development
JBoss by Red Hat @ www.jboss.com
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[rules-users] functions inside fact type declaration?
Hi, is it possible to define a function/constructor inside a fact type declaration? If yes, how can it be done? Thank you :) Tina ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Meaning of the metadata 'key'
Tina, No problem. That is one of the items I think it is missing in the docs. It just means that field will be considered on the generated equals() and hashcode() methods of the bean. Example: declare Person firstName : String @key lastName : String @key address : Address end The above example will generate a Person bean class and will consider first and last name as identifiers for the person. So, two instance with the same first and last name will generate the same hashcode and the equals method will return true when comparing them, even if the address is different. Edson 2010/8/9 Tina Vießmann > Hi, > > I think I'm to stupid to google, but I can't find an explanation what > '@key' means. > Can anyone please explain it to me or just give me a link? > > Sorry for the simple and stupid request and thank you for your help! > > Greetings > Tina > ___ > 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
[rules-users] Meaning of the metadata 'key'
Hi, I think I'm to stupid to google, but I can't find an explanation what '@key' means. Can anyone please explain it to me or just give me a link? Sorry for the simple and stupid request and thank you for your help! Greetings Tina ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Help needed in Rule flow in Guvnor
Hi, I am using Rule flow in Guvnor for setting some value out of the flow which would be used for my further processing. Below is what I'm trying to achieve, I have two rule groups in the rule flow, out of which the first one would set a pair in a Map which is a field in one of the bean class declared Global for the package when ever each rule is executed in the set of rules in the group and the next rule group would be required to have a set of rules that needs to be executed against this Map which was set in the first rules group and send the final result as output out of the flow. I have defined the rules in the first rule group and set the Map with necessary keys and values, but I was not able to read the Map in this second rule group. I had tried this second rule group as a custom java code in my Java part after the rules execution from guvnor and able to read the map that was set from the first rule group and able set the final decision. I want to know whether reading the Map from the second rule group which was set in the first rule group is possible or not. Or kindly let me know whether I'm missing anything here and needed to add any other logic to achieve the same. Thanks, Vignesh -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Help-needed-in-Rule-flow-in-Guvnor-tp1059410p1059410.html Sent from the Drools - User 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] Getting NullPointer Exception while sending an response back from Guvnor using web services
Hi Jervis, I have tried to invoke the Rules that has been defined in the Guvnor rule engine, which was done standalone earlier and worked fine with out any issues. But I'm getting the below exception when I added the Guvnor project as a JAR to this web service and while trying to invoke the rules from the skeleton I was able to hit the rule engine and got the actual results out of it with out any issues and got the below exception while returning the response back to the client from the skeleton. Kindly let me know if you need more details. Thanks, Vignesh -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Getting-NullPointer-Exception-while-sending-an-response-back-from-Guvnor-using-web-services-tp1025999p1059172.html Sent from the Drools - User 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] Getting NullPointer Exception while sending an response back from Guvnor using web services
The stack trace does not tell much, the cause could be anything. Could you be more specific on what you have done please: " tried invoking the same from a webservice by including this guvnor project as a JAR". You exposed what as web services? and how? Cheers, Jervis On 2010/8/5 20:40, Vignesh wrote: > > Hi, > > I have defined a set of rules using DSL and corresponding rules in Guvnor > and i have tested the same using a standalone code which is working fine. > But when i tried invoking the same from a webservice by including this > guvnor project as a JAR Im getting a NullPointerException while sending the > response back from Guvnor to the web service client, > > below is the exception stack i got in server side, > > ERROR - AxisServlet.doPost(172) | > java.lang.NullPointerException > at > org.apache.axis2.clustering.context.DefaultContextManager.updateContexts(DefaultContextManager.java:81) > at > org.apache.axis2.clustering.context.Replicator.replicate(Replicator.java:81) > at > org.apache.axis2.receivers.AbstractMessageReceiver.replicateState(AbstractMessageReceiver.java:71) > at > org.apache.axis2.receivers.AbstractInOutMessageReceiver.invokeBusinessLogic(AbstractInOutMessageReceiver.java:41) > at > org.apache.axis2.receivers.AbstractMessageReceiver.receive(AbstractMessageReceiver.java:100) > at org.apache.axis2.engine.AxisEngine.receive(AxisEngine.java:176) > at > org.apache.axis2.transport.http.HTTPTransportUtils.processHTTPPostRequest(HTTPTransportUtils.java:275) > at > org.apache.axis2.transport.http.AxisServlet.doPost(AxisServlet.java:133) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:637) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:717) > at > org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) > at > org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) > at > org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) > at > org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191) > at > org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127) > at > org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) > at > org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) > at > org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298) > at > org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852) > at > org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process > Http11Protocol.java:588) > at > org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489) > at java.lang.Thread.run(Thread.java:595) > > and the below is the exception stack in client side, > > org.apache.axis2.AxisFault: java.lang.NullPointerException > at > org.apache.axis2.util.Utils.getInboundFaultFromMessageContext(Utils.java:512) > at > org.apache.axis2.description.OutInAxisOperationClient.handleResponse(OutInAxisOperation.java:370) > at > org.apache.axis2.description.OutInAxisOperationClient.send(OutInAxisOperation.java:416) > at > org.apache.axis2.description.OutInAxisOperationClient.executeImpl(OutInAxisOperation.java:228) > at > org.apache.axis2.client.OperationClient.execute(OperationClient.java:163) > at org.tempuri.Service1Stub.CheckEntitlement(Service1Stub.java:740) > at ws.client.testClient.main(testClient.java:73) > > If any one has faced similar issue and fixed the same, please help me out it > resolving the same or any pointers for fixing this issue would be of great > helpful. > > Thanks, > Vignesh ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Missing Drools Pipeline
On 09/08/2010 16:20, Thorsten wrote: > Hello out there, > > I just installed the Drools 5.1 final and have read the updated > documentation of Expert and Fusion. I wonder what happend to the > Pipeline-classes? It seems like they are no longer inside the packages. > Do you have more information? pipeline was an experimentation for how to use drools within a service architecture. We've now deprecated that in favour of using spring and camel. However drools-pipeline.jar is still there for those that were using it. But I'd strongly recommend you invest your time in camel, it's far superior. Mark > > Thanks and regards > Thorsten > > ___ > 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] Using rule flow in Guvnor
Sorry, my .rfm file was not pasted properly in the previous post I checked the rule flow model in eclipse using the green tick mark and it showed Drools flow model checked successfully. My .rf and .rfm files were created. But when I imported .rf file in my guvnor and build the package I am getting the following error : Unable to parse xml When i checked the server log, only this was printed : (null: 1, 93): cvc-elt.1: Cannot find the declaration of element 'org.drools.eclipse.flow.ruleflow.core.RuleFlowProcessWrapper'. 1 1 Start 1 ailmentreserves 2 AilmentReserves 1 benefitreserves 3 BenefitReserves 1 4 End 2 3 4 4 resistrationflow RuleFlowTest 1.0 RuleFlow HealthCareTest Am I missing anything. Should the package name in the eclipse same as the package I use in guvnor ? I have only the rule flow file in Eclipse and remaining are written directly in guvnor. Any hint on this will be of great help. Regards, Dinesh -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Using-rule-flow-in-Guvnor-tp1057004p1057128.html Sent from the Drools - User 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 rule flow in Guvnor
Hi, I am having an issue in implementing the rule flow in guvnor. I created a simple rule flow using eclipse plug in. http://drools-java-rules-engine.46999.n3.nabble.com/file/n1057004/rules.jpg I checked the rule flow model in eclipse using the green tick mark and it showed Drools flow model checked successfully. My .rf and .rfm files were created. But when I imported .rf file in my guvnor and build the package I am getting the following error : Unable to parse xml When i checked the server log, only this was printed : (null: 1, 93): cvc-elt.1: Cannot find the declaration of element 'org.drools.eclipse.flow.ruleflow.core.RuleFlowProcessWrapper'. This is the source of the generated .rfm file 1 1 Start 1 ailmentreserves 2 AilmentReserves 1 benefitreserves 3 BenefitReserves 1 4 End 2 3 4 4 resistrationflow RuleFlowTest 1.0 RuleFlow HealthCareTest Am I missing anything. Should the package name in the eclipse same as the package I use in guvnor ? I have only the rule flow file in Eclipse and remaining are written directly in guvnor. Any hint on this will be of great help. Regards, Dinesh -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/Using-rule-flow-in-Guvnor-tp1057004p1057004.html Sent from the Drools - User 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] Missing Drools Pipeline
Hello out there, I just installed the Drools 5.1 final and have read the updated documentation of Expert and Fusion. I wonder what happend to the Pipeline-classes? It seems like they are no longer inside the packages. Do you have more information? Thanks and regards Thorsten ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] CPU Spike creating a StatefulKnowledgeSession using OSGi
Is it possible that this might be invoking the compiler when a session is created? I have all of the init code in the service start call and stored as members of the service for reuse but I must create a new knowledge session for each run. Any ideas? Thanks, Dave -- Forwarded message -- From: David Conde Date: 9 August 2010 11:17 Subject: Re: [rules-users] CPU Spike creating a StatefulKnowledgeSession using OSGi To: Rules Users List The line that it spikes on is StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();. Cheers, Dave On 9 August 2010 11:09, Pavel Tavoda wrote: > Is it session creation or rule compilation? > > Pavel > > 2010/8/9 David Conde : > > Good Morning, > > I now have drools running on the Spring DM-Server but I am seeing a CPU > > spike when creating a StatefulKnowledgeSession. I've tested this outside > of > > an OSGi environment and I don't see the spike. Does anyone know any > settings > > that I can change that might make this go away? > > Thanks, > > Dave > > > > -- > > David Conde > > CTO Calom Technologies > > > > > > ___ > > 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] UTF8 characters corrupted when embedded in DRL files
Could you please try Drools 5.1? This should have been fixed.
Cheers,
Jervis
On 2010/8/9 19:13, crafferty wrote:
>
> Drools, version, 5.0.1 running on Java 1.6.0_12
>
> Our application creates rules in DRL files, the rules contain non-Latin
> characters, here is an example rule:
>
> //
> //
> // TRIGGER_ RULE: Detect Dual Receiver Failure
> //
> //
>
> rule TRIGGER_Detect_Dual_Receiver_Failure_43296731577724
> no-loop true
> salience 0
>
> when
>
> // When a Child Group exists with:
>
> child0:ChildGroup(
> //base class is "com.sidonis.vp.dtvexample.BroadcastEquipment"
>
> baseClass ==
> "com.sidonis.vp.dtvexample.BroadcastEquipment",
>
>
> //parent base class is "com.sidonis.vp.dtvexample.BroadcastEquipment"
>
> parentBaseClass ==
> "com.sidonis.vp.dtvexample.BroadcastEquipment",
>
>
> //parent sub class starts with "DualReceiver"
>
> child0_parentSubClass:parentSubClass ->
> (child0_parentSubClass.startsWith( "DualReceiver" )),
>
>
> //failed count is 2
>
> failed == 2
> )
> then
>StatisticsSystemRuleFunctions.incrementTrigRuleCount();
> StatePropagationFunctions.trigForceParentFailedViaChild(
> "TRIGGER_Detect_Dual_Receiver_Failure_43296731577724",
>"あえいおう",
>child0,
>true );
> end
>
> When the static method trigForceParentFailedViaChild is invoke as a
> consequence of fullfilling the rule conditions, the non-latin text in the
> second argument is corrupted when output to a file.
>
> The DRL is loaded as a resource by our application and passed to Drools
> thus:
>
> try {
> final FileInputStream fis = new
> FileInputStream(drlFile);
> fr = new InputStreamReader(fis, textEncoding);
>
> } catch (FileNotFoundException e1) {
> log.error("Cannot open DRL file: " +
> drlFile.getName());
> return null;
> } catch (UnsupportedEncodingException e) {
> log.error("Text encoding configuration problem
> " + textEncoding);
> return null;
> }
> // Load DRL file into PackageBuilder and create Package
> Resource resource = ResourceFactory.newReaderResource(fr,
> textEncoding);
>
> KnowledgeBuilder knowledgeBuilder =
> KnowledgeBuilderFactory.newKnowledgeBuilder(knowledgeBuilderConfiguration);
>
> knowledgeBuilder.add(resource, ResourceType.DRL);
>
> Note, 'textEncoding' is loaded from a properties file by the application and
> is set to "UTF8". The system property "file.encoding" for the
> application's JVM is also set to "UTF8".
>
> We have also tried using the ResourceFactory's newFileResource passing it
> the drlFile Object, but to no avail, the result is the same.
>
> So we have debugged the Drools 5.0.1 source and discovered that when the
> stream representing the DRL is wrapped by the ANTLRInputStream, line 320,
> org.drools.compiler.DrlParser (drools-compiler project) the encoding of the
> input stream is not passed on to the ANTLRInputStream that is used to wrap
> it. If we modify the Drools code to use the overloaded ANTLRInputStream
> constructor that accepts the stream encoding then the non-Latin text is
> passed correctly to our method.We've also checked the code on the head
> of the repository and it is same. Although this seems like a bug, I want to
> make sure we're not doing something wrong first.
>
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Re: [rules-users] How to work with org.drools.repository
Because I only needed a small subset of the Drools functionality (i.e. just plain rules without salience) I just made up a simple xml schema to store the rule. I've posted some other related questions about the .brl format (which is the xml format Guvnor uses to store rules) but haven't gotten many useful replies. I think if you project is not overly complex it's probably better off just making up your own storage scheme than trying to reverse engineer the classes in Drools (fyi they use XStream to serialize and deserialize their classes into xml). Hope that helps. -- View this message in context: http://drools-java-rules-engine.46999.n3.nabble.com/How-to-work-with-org-drools-repository-tp984680p1055367.html Sent from the Drools - User 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] UTF8 characters corrupted when embedded in DRL files
Drools, version, 5.0.1 running on Java 1.6.0_12
Our application creates rules in DRL files, the rules contain non-Latin
characters, here is an example rule:
//
//
// TRIGGER_ RULE: Detect Dual Receiver Failure
//
//
rule TRIGGER_Detect_Dual_Receiver_Failure_43296731577724
no-loop true
salience 0
when
// When a Child Group exists with:
child0:ChildGroup(
// base class is "com.sidonis.vp.dtvexample.BroadcastEquipment"
baseClass ==
"com.sidonis.vp.dtvexample.BroadcastEquipment",
// parent base class is "com.sidonis.vp.dtvexample.BroadcastEquipment"
parentBaseClass ==
"com.sidonis.vp.dtvexample.BroadcastEquipment",
// parent sub class starts with "DualReceiver"
child0_parentSubClass:parentSubClass ->
(child0_parentSubClass.startsWith( "DualReceiver" )),
// failed count is 2
failed == 2
)
then
StatisticsSystemRuleFunctions.incrementTrigRuleCount();
StatePropagationFunctions.trigForceParentFailedViaChild(
"TRIGGER_Detect_Dual_Receiver_Failure_43296731577724",
"あえいおう",
child0,
true );
end
When the static method trigForceParentFailedViaChild is invoke as a
consequence of fullfilling the rule conditions, the non-latin text in the
second argument is corrupted when output to a file.
The DRL is loaded as a resource by our application and passed to Drools
thus:
try {
final FileInputStream fis = new
FileInputStream(drlFile);
fr = new InputStreamReader(fis, textEncoding);
} catch (FileNotFoundException e1) {
log.error("Cannot open DRL file: " +
drlFile.getName());
return null;
} catch (UnsupportedEncodingException e) {
log.error("Text encoding configuration problem
" + textEncoding);
return null;
}
// Load DRL file into PackageBuilder and create Package
Resource resource = ResourceFactory.newReaderResource(fr,
textEncoding);
KnowledgeBuilder knowledgeBuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder(knowledgeBuilderConfiguration);
knowledgeBuilder.add(resource, ResourceType.DRL);
Note, 'textEncoding' is loaded from a properties file by the application and
is set to "UTF8". The system property "file.encoding" for the
application's JVM is also set to "UTF8".
We have also tried using the ResourceFactory's newFileResource passing it
the drlFile Object, but to no avail, the result is the same.
So we have debugged the Drools 5.0.1 source and discovered that when the
stream representing the DRL is wrapped by the ANTLRInputStream, line 320,
org.drools.compiler.DrlParser (drools-compiler project) the encoding of the
input stream is not passed on to the ANTLRInputStream that is used to wrap
it. If we modify the Drools code to use the overloaded ANTLRInputStream
constructor that accepts the stream encoding then the non-Latin text is
passed correctly to our method.We've also checked the code on the head
of the repository and it is same. Although this seems like a bug, I want to
make sure we're not doing something wrong first.
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Re: [rules-users] CPU Spike creating a StatefulKnowledgeSession using OSGi
The line that it spikes on is StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();. Cheers, Dave On 9 August 2010 11:09, Pavel Tavoda wrote: > Is it session creation or rule compilation? > > Pavel > > 2010/8/9 David Conde : > > Good Morning, > > I now have drools running on the Spring DM-Server but I am seeing a CPU > > spike when creating a StatefulKnowledgeSession. I've tested this outside > of > > an OSGi environment and I don't see the spike. Does anyone know any > settings > > that I can change that might make this go away? > > Thanks, > > Dave > > > > -- > > David Conde > > CTO Calom Technologies > > > > > > ___ > > 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 mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] CPU Spike creating a StatefulKnowledgeSession using OSGi
Is it session creation or rule compilation? Pavel 2010/8/9 David Conde : > Good Morning, > I now have drools running on the Spring DM-Server but I am seeing a CPU > spike when creating a StatefulKnowledgeSession. I've tested this outside of > an OSGi environment and I don't see the spike. Does anyone know any settings > that I can change that might make this go away? > Thanks, > Dave > > -- > David Conde > CTO Calom Technologies > > > ___ > 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] CPU Spike creating a StatefulKnowledgeSession using OSGi
Good Morning, I now have drools running on the Spring DM-Server but I am seeing a CPU spike when creating a StatefulKnowledgeSession. I've tested this outside of an OSGi environment and I don't see the spike. Does anyone know any settings that I can change that might make this go away? Thanks, Dave -- David Conde CTO Calom Technologies ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Inserting new rule in existing package
Hello all, In my program, I receive series of rules as String in XML along with the name of package they should be added to. putRules(String knowledgeSet, List XMLRules) At the moment, I load from the repository the original state of the PackageDescr, get all rule names currently in working memory from the StatefulKnowledgeSession and take out of the PackageDescr what's not in working memory. >From there, I try to manually (using DOM4J) insert the new rules in the XML representation of the PackageDescr and load this one. But... 1) I get the following error when I try to load the latter XML (package node is in the XML, I've checked): Code: XmlPackageReader xmlReader = new XmlPackageReader(null); StringReader sr = new StringReader(documentGlob.asXML()); PackageDescr packageDescr = xmlReader.read(sr); Error: (null: 2, 222): schema_reference.4: Failed to read schema document 'drools.org/drools-5.0.xsd', because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not . (null: 2, 222): cvc-elt.1: Cannot find the declaration of element 'package'. 2) There is a removeRule function on the KnowledgeBase class, why not addRule, did I miss something? 3) There must be an easier way to do this. Could somebody give me some pointers? All the best, Pierre ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
