[rules-users] How to validate boolean values..using Drools
Hi, In My Employee Table column name HostVisible_YN. HostVisible_YN it's boolen value. Condtion is: HostVisible_YN column value must be Y or N. How to validate this condition using drools.. Thnks, Manya... -- View this message in context: http://www.nabble.com/How-to-validate-boolean-values..using-Drools-tp17882303p17882303.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] RuleFlow Groups and retraction
Hi, one question about using ruleflows: 1. i have a ruleflow consisting of 2 Nodes 2. i insert 2 facts 3. the 2 facts match the condition in rule for the second node, so when inserting an activation is generated 4. but the rule in the first node will retract one of the 2 facts 5. it seems the activation for the second node is not cancelled also i do a retract in the rule 6. now the activation in second node tries to execute and results in a NullpointerException What do i do wrong? Cheers Markus ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] EPL relicense for eclipse tooling
I'm contemplating EPLing the Eclipse tooling, anyone have any opions on this, good or bad? Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Re: How to validate boolean values..using Drools
In My Employee Table column name HostVisible_YN. HostVisible_YN it's boolen value. Condtion is: HostVisible_YN column value must be Y or N. How to validate this condition using drools.. Hi Manya, feel free to experiment with the DRL language! A simple test gave, that the most intuitive solution is possible: $value in (Y, N) Here you can read more: http://downloads.jboss.com/drools/docs/4.0.7.19894.GA/html/ch06s05.html#d0e3166 See section on Compound Value Restriction for details. Alternatively you could use $value == Y || N which is the simplest solution which you should (!) have found even as a beginner as I am. Again: experiment with the language! Alexander Claus ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Changing DSL in BRMS
Hi, I have a DSL defined in BRMS that says for example.. [when]The cat sat on the mat=Object(moose) and then loads of rules defined that are using that DSL.. Now the business wants to change the words so that the DSL reads [when]The dog sat on the mat=Object(moose) That is easy to do, as I just edit the DSL.. but none of the rules change... and there are lots of them... now all the rules fail validation How can I search and replace the DSL in the rules? Cheers Ric ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Running Drools 4 examples
Greetings! I am attempting to run the HelloWorld example for Drools 4. I have Eclipse 3.3 setup on Windows with the Drools plugin. I have created a project with the Drools examples and added all the Drools .jar files to the project. Everything compiles. When I initially ran HelloWorldExample.java it appeared that it could not find the HelloWorld.drl file. So, I moved that file into the same directory as HelloWorldExample.java and ran again. This time I am getting an error that the JDT compiler is not found even though it appears that there are JDT jar files in the Eclipse plugins. I also attempted to run this example under Linux from the command line. In this case I placed all the Drools .jar files into the JRE ext folder and changed the source code to use the Janino compiler by adding: // Set up for the Janino compiler, not Eclipse System.setProperty(drools.dialect.java.compiler, JANINO); PackageBuilderConfiguration cfg = new PackageBuilderConfiguration(); JavaDialectConfiguration javaConf = (JavaDialectConfiguration)cfg.getDialectConfiguration(java); This version compiles with javac and runs with java -cp . HelloWorldExample but gives me an error within the compiler while compiling the .drl file: Exception in thread main java.lang.StringIndexOutOfBoundsException: String index out of range: -1 at java.lang.String.substring(String.java:1938) at org.drools.base.ClassTypeResolver.importClass(ClassTypeResolver.java:242) at org.drools.base.ClassTypeResolver.resolveType(ClassTypeResolver.java:158) at org.drools.rule.builder.dialect.mvel.MVELDialect.addImport(MVELDialect.java:257) at org.drools.compiler.DialectRegistry.addImport(DialectRegistry.java:98) at org.drools.compiler.PackageBuilder.mergePackage(PackageBuilder.java:377) at org.drools.compiler.PackageBuilder.newPackage(PackageBuilder.java:350) at org.drools.compiler.PackageBuilder.addPackage(PackageBuilder.java:267) at org.drools.compiler.PackageBuilder.addPackageFromDrl(PackageBuilder.java:167) at HelloWorldExample.main(HelloWorldExample.java:39) It is dying on this line: builder.addPackageFromDrl( source ); My version of HelloWorldExample.java the same as the given example except for the addition of the lines above for Janino. My ultimate goal is to run this all under Linux, I am not an Eclipse user. Any help getting this working would be greatly appreciated! Ron _ Introducing Live Search cashback . It's search that pays you back! http://search.live.com/cashback/?pkw=form=MIJAAF/publ=HMTGL/crea=introsrchcashback ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] how to find which condition evaluated to TRUE?
Hello,
If I have a complex rule with a few conditions concatenated via AND and OR and
NOT, and the rule evaluated to true during the engine run - is there a way to
figure out which of the conditions caused the rule to evaluate to true?
In a simple example:
rule test1
dialect java
when
$data : ContractRulesData (region=='NE' sum 250)
then
approverList.add(approver1, approver2, Level1);
System.out.println(test1 is TRUE; result: approver1, approver2,
Level1);
end
I tried to add an AgendaListener with the following code to find out which
rules have fired:
public void afterActivationFired(AfterActivationFiredEvent event,
WorkingMemory workingMemory) {
Activation activation = event.getActivation();
Rule rule = activation.getRule();
GroupElement[] leftElements = rule.getTransformedLhs();
System.out.println(afterActivationFired: rule = + rule.getName());
System.out.println(Conditions: );
for (GroupElement left_el: leftElements){
System.out.println(left_el.toString());
}
The output is somewhat cryptic :
afterActivationFired: rule = test1
Conditions:
AND[Pattern type='[ClassObjectType
class=com.emptoris.ecm.domain.ContractRulesData]', index='0', offset='0',
identifer='[Declaration: type=ValueType = 'Object' identifier=$data]']
So, is there a way to get even more information about the conditions and
whether they evaluated to TRUE or FALSE?
Thanks,
Marina___
rules-users mailing list
rules-users@lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] No accumulator function found for identifier
Is there any other magic for the IDE to see this file? With drools.packagebuilder.conf in my windows home directory I still get the IDE error. Also, for my environment I'm not using a property file at runtime -- I create the properties in code and construct a PackageBuilderConfiguration. It would be nice if there was another way to configure the IDE that is compatible for this supported use of the API. -barry -- View this message in context: http://www.nabble.com/No-accumulator-function-found-for-identifier-tp17339463p17932670.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] Rule is firing on those objects for which that has already fired
Hi All, I am using Drools Stateful session with serialized Rule Base Working memory for my application. I need to write some rule which will *only* fire on newly inserted data points in Working Memory. Does Drools support any such feature which will help me to achieve this ? Any suggestion, how can I achieve this efficiently? As sample, I have written a rule bellow: global RuleSetOutput ruleSetOutput rule sample_rule when (p4: DataObject(id == 4, stringValue == 230007014)) and (p14: DataObject(id == 14, stringValue == 230007004)) and (p10: DataObject(id == 10, stringValue == 230007005)) and (p11: DataObject(id == 11, stringValue == 230007006)) and (p12: DataObject(id == 12, stringValue == 230007007)) and (p13: DataObject(id == 13, stringValue == 230007008)) then String ruleID = sample_rule; RuleOutput ruleOutput = RuleEngineHelper.getRuleOutput(ruleSetOutput, ruleID); ruleOutput.addDataObject(p13); ruleOutput.addDataObject(p4); ruleOutput.addDataObject(p11); ruleOutput.addDataObject(p14); ruleOutput.addDataObject(p10); ruleOutput.addDataObject(p12); end For 1st execution, I am inserting 6 matching DataObjects into Working Memory. Rule is getting fired once those 6 data points are getting added into RuleOutput. But in subsequent rule executions after I insert 6 more matching DataObjects into Working Memory, Rule is getting fired couple of times objects from old executions also getting appended to the current RuleOutput. How can I avoid this ? Regards Siddhartha ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] Different working memories/rulebases for different application issues?
Hi, I'm quite a beginner with Drools and I want to integrate Drools in our application. The application could use rules for different smaller issues which use partly different facts as input. My question is if I should use different rulebases or working memories for each issue or is on rulesbase contiaining all rules which then refers to different fact tyes and one session is enough? does it make sense to bundle the rules for each issue in an own agenda group? Regards Thomas ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
[rules-users] wrapping drools api?
Hello, some people write about wrapping the Drools API with an own access API for integration in the application. Sorry for the perhaps stupid question, but what is the reason for this? Does this only make sense if I'm thinking about changing the rule engine one day? If I'm not intending to change the rule engine from Drools to another, so isn't it the same if the developpers has to use the native Drools API or an self-written access API? Regards Tom ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] wrapping drools api?
[EMAIL PROTECTED] wrote: Hello, some people write about wrapping the Drools API with an own access API for integration in the application. Sorry for the perhaps stupid question, but what is the reason for this? Does this only make sense if I'm thinking about changing the rule engine one day? yes they do this for rule engine independance. If I'm not intending to change the rule engine from Drools to another, so isn't it the same if the developpers has to use the native Drools API or an self-written access API? Regards Tom ___ 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] EPL relicense for eclipse tooling
Stay with BSD-style license No need to muddy the waters... On 18/06/08 12:31 AM, Mark Proctor [EMAIL PROTECTED] wrote: I'm contemplating EPLing the Eclipse tooling, anyone have any opions on this, good or bad? Mark ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Level 3 85 Macquarie Street Hobart TAS 7000 Australia Phone: +61 3 6270 2276 Mobile: +61 4 0096 4240 Fax: +61 3 6270 2223 http://illation.com.au ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] EPL relicense for eclipse tooling
Steven Núñez wrote: Stay with BSD-style license No need to muddy the waters... We'll its not quite as simple as that. All other JBoss tooling is EPL and Drools stuff isn't, it's ASL. However the new synchronisation code for the repository is considered generic tooling and they want to put this under the EPL, as it's not owned by Drools team. Mixing EPL and other license in the same svn repository is apparently a bad idea, so I've had a request from the JBoss Tools people to do a complete re-license to make things easier. Now we can continue with the Drools owned parts staying ASL and other bits being EPL, but you'll still have a product with muddy waters due to mixed licensing - I think it's unlikely I'll win the argument to ASL any generic parts if they happened to be used with Drools. But I wanted to put this out to the community for open debate on the pros and cons. I don't consider the EPL to have the same political issues to the LGPL, so I'm personally less concerned about the political issues. On 18/06/08 12:31 AM, Mark Proctor [EMAIL PROTECTED] wrote: I'm contemplating EPLing the Eclipse tooling, anyone have any opions on this, good or bad? Mark ___ 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
