November 2013 - rules-users - Jboss List Archives

by Govind J. Parashar

Hi all I have Class A which has a one attribute private List<B> obj = new ArrayList<B>(); Class B which has a one attribute Status Value How can I iterate through the ArrayList (i.e obj) to get to check each object B . Status=='True' the set Value=true in the drl file. Thanks Govind MASTEK LTD. In the US, we're called MAJESCOMASTEK ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Opinions expressed in this e-mail are those of the individual and not that of Mastek Limited, unless specifically indicated to that effect. Mastek Limited does not accept any responsibility or liability for it. This e-mail and attachments (if any) transmitted with it are confidential and/or privileged and solely for the use of the intended person or entity to which it is addressed. Any review, re-transmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. This e-mail and its attachments have been scanned for the presence of computer viruses. It is the responsibility of the recipient to run the virus check on e-mails and attachments before opening them. If you have received this e-mail in error, kindly delete this e-mail from desktop and server. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

12 years, 5 months

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How to use type-safe enums in rule condition

by droolster

Hello, I would like to use type-safe enums in my rules. At the moment I have situation like this: public class Country { private String name; // getter/setters } rule "Country" when Country ( name == "USA" ) then DO SOMETHING end I would like to have something like this: public enum Country { USA () // list of all countries in the world } and in the rule I would like to do this: rule "Country" when Country ( name == Country.USA ) then DO SOMETHING end Is that possible? Thanks in advance for your help. -- View this message in context: http://drools.46999.n3.nabble.com/How-to-use-type-safe-enums-in-rule-cond... Sent from the Drools: User forum mailing list archive at Nabble.com.

12 years, 5 months

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Problem in writing rule and apply DSL

by braveheart85

Hello guys, I really need your help. I'm writing a DSL file in order to allow my application user to write their simple rules. I have queries of this typology: $a: Data( ) $b: Year( ) from $a.years $c: Person( ) from $b.persons dsl mapping (inline version): there are persons=$a: Data( ) $b: Year( ) from $a.years $c: Person( ) from $b.persons now if i would add attribute to person i can't, for example to get persons over 18 years old. If i write: there are persons - age more than 18 drools engine try to add attribute to Data object, probably because it is first object in line. To resolve this problem i should write query something like: $c: Person( ) from ( Year( ).persons from Data( ).years ) In this way i can add attribute to Person instead of Data. Unfortunatly i don't know how can i get it. Someone can help me please. Best Regards -- View this message in context: http://drools.46999.n3.nabble.com/Problem-in-writing-rule-and-apply-DSL-t... Sent from the Drools: User forum mailing list archive at Nabble.com.

12 years, 5 months

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"distinct" operator in a query

by braveheart85

Hello guys, I make a very simple question, especially for a curiosity. I have this query: query "QuerySelected" $result: Person( identifierCode == "ABCDEF12H45S100A" ) $y: YearData( id == $result.identifierCode ) exists Vehicle( ) from $y.vehicles end With this query i get two equal person results because there are two annual that matches with condition. There is a simple way in drools to apply "distinct" operator or avoid this behaviour. Best regards Andrea -- View this message in context: http://drools.46999.n3.nabble.com/distinct-operator-in-a-query-tp4026762.... Sent from the Drools: User forum mailing list archive at Nabble.com.

12 years, 5 months

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Out of Mem and thousand threads : Disabling JIT ?

by Raphael Jolivet

Hi, I am using Drools for some time an I recently increased the number of rules and their complexity. I have now about 200 rules, for 700 x 200 facts (rules on a cartesian product on them). Since then, the computation of rules explodes with the following exception : java.lang.OutOfMemoryError: unable to create new native thread at java.lang.Thread.$$YJP$$start0(Native Method) [na:1.6.0_30] at java.lang.Thread.start0(Thread.java) [na:1.6.0_30] at java.lang.Thread.start(Thread.java:640) [na:1.6.0_30] at java.util.concurrent.ThreadPoolExecutor.addIfUnderMaximumPoolSize(ThreadPoolExecutor.java:727) ~[na:1.6.0_30] at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:657) ~[na:1.6.0_30] at org.drools.rule.constraint.MvelConstraint.jitEvaluator(MvelConstraint.java:232) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.rule.constraint.MvelConstraint.evaluate(MvelConstraint.java:197) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.rule.constraint.MvelConstraint.isAllowed(MvelConstraint.java:157) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:137) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:141) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:141) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:141) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] at org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:59) ~[org-drools-drools-core-5.5.0.Final.jar:5.5.0.Final] ... After Googling a bit, I saw that this is due to JIT compilation of my rules. For some reason, each one seem to create a Thread and ends up with thousands of them. First of all, I find a bit risky that the JIT compilation is fired by some *hardcoded *threshold : I was not expecting such a technical tricky optimization to randomly activate depending of my data. Anyway, I wanted to disable this JIT thing. I saw that the disabling is only available since *5.5.0.-final* right ? I have switched to that version but I can't seem to be able to disable it. I have tried both : *-Dmvel2.disable.jit=true* (which would not be a viable solution for production anyway : We can't rely on some settings of the server to ensure things work) And also this : *OptimizerFactory.setDefaultOptimizer("reflective"); *(found here<http://mvel.codehaus.org/Disabling+the+JIT+Compiler> ) Any help would be appreciated. Brgds, Raphael

12 years, 5 months

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Scala, Groovy, Clojure, etc. Bindings

by sirinath

Hi, Is it possible to provide binding which make Drools and Other related projects feel more like the concepts of other JVM languages. Suminda -- View this message in context: http://drools.46999.n3.nabble.com/Scala-Groovy-Clojure-etc-Bindings-tp402... Sent from the Drools: User forum mailing list archive at Nabble.com.

12 years, 5 months

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drools camel server execution has result but reponse empty result

by scarlettxu

Hi Expert, I have a strange problem need your kind assistance! I have deployed the drools server 5.5.0 to my tomcat, and I can use the wrapped testing case without problem in the last week when I type http://localhost:8080/camel-client/test.jsp then the response will be Reuqest: "Hello World" Response: "Hello World" Today, I run it normally at first, but later I want to try to use the https so I change the url to https://localhost:8443/camel-client/test.jsp however the result is Reuqest: "Hello World" Response: "" then I change back to use http, still have empty response I have checked the log, there is execution result returned back, but just the response is empty Anybody can kindly check my problem? I have debug it for a whole day, but have not figure out this strange problem. below is the log for reference 19:23:56,015 TRACE CxfRsProducer:183 - Response body = org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f 19:23:56,016 TRACE DefaultCxfRsBinding:195 - Populate external header Date=[Tue, 12 Nov 2013 11:23:55 GMT] as Date 19:23:56,016 TRACE DefaultCxfRsBinding:195 - Populate external header Content-Length=[268] as Content-Length 19:23:56,016 TRACE DefaultCxfRsBinding:195 - Populate external header Content-Type=[text/plain] as Content-Type 19:23:56,016 TRACE DefaultCxfRsBinding:195 - Populate external header Server=[Apache-Coyote/1.1] as Server 19:23:56,017 TRACE DefaultTypeConverter:88 - Converting org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value: org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f 19:23:56,018 TRACE DefaultTypeConverter:88 - Fallback type converter StaticMethodFallbackTypeConverter: public static java.lang.Object org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry) converted type from: java.lang.String to: org.apache.cxf.jaxrs.impl.ResponseImpl 19:23:56,018 TRACE InstrumentationProcessor:88 - to: Recording duration: 182 millis for exchange: Exchange[Message: <?xml version='1.0' encoding='UTF-8'?><execution-results><result identifier="message"><org.test.Message><text>echo:Hello World</text></org.test.Message></result><fact-handle identifier="message" external-form="0:2:1391417336:1391417336:2:DEFAULT"/></execution-results>] 19:23:56,018 TRACE DefaultTypeConverter:82 - Converting org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value: org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f 19:23:56,019 TRACE DefaultTypeConverter:82 - Fallback type converter StaticMethodFallbackTypeConverter: public static java.lang.Object org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry) converted type from: java.lang.String to: org.apache.cxf.jaxrs.impl.ResponseImpl 19:23:56,019 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,019 TRACE DefaultTypeConverter:82 - Converting org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value: org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f 19:23:56,020 TRACE DefaultTypeConverter:82 - Fallback type converter StaticMethodFallbackTypeConverter: public static java.lang.Object org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry) converted type from: java.lang.String to: org.apache.cxf.jaxrs.impl.ResponseImpl 19:23:56,020 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,020 TRACE DefaultTypeConverter:82 - Converting org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value: org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f 19:23:56,021 TRACE DefaultTypeConverter:82 - Fallback type converter StaticMethodFallbackTypeConverter: public static java.lang.Object org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry) converted type from: java.lang.String to: org.apache.cxf.jaxrs.impl.ResponseImpl 19:23:56,021 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,021 TRACE DefaultTypeConverter:82 - Converting org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value: org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f 19:23:56,022 TRACE DefaultTypeConverter:82 - Fallback type converter StaticMethodFallbackTypeConverter: public static java.lang.Object org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry) converted type from: java.lang.String to: org.apache.cxf.jaxrs.impl.ResponseImpl 19:23:56,022 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,023 TRACE DefaultErrorHandler:513 - Is exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 interrupted? false 19:23:56,023 TRACE DefaultErrorHandler:496 - Is exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 done? true 19:23:56,023 TRACE DefaultTypeConverter:82 - Converting org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value: org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f 19:23:56,023 TRACE DefaultTypeConverter:82 - Fallback type converter StaticMethodFallbackTypeConverter: public static java.lang.Object org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry) converted type from: java.lang.String to: org.apache.cxf.jaxrs.impl.ResponseImpl 19:23:56,024 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,024 TRACE Pipeline:90 - Processing exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 is continued being processed synchronously 19:23:56,024 TRACE Pipeline:186 - ExchangeId: ID-icilszxnb126-46148-1384255363195-1-1 should continue routing: true 19:23:56,024 TRACE DefaultTypeConverter:113 - Converting org.apache.cxf.jaxrs.impl.ResponseImpl -> java.lang.String with value: org.apache.cxf.jaxrs.impl.ResponseImpl@26d6466f 19:23:56,025 TRACE DefaultTypeConverter:113 - Fallback type converter StaticMethodFallbackTypeConverter: public static java.lang.Object org.apache.camel.component.cxf.converter.CxfConverter.convertTo(java.lang.Class,org.apache.camel.Exchange,java.lang.Object,org.apache.camel.spi.TypeConverterRegistry) converted type from: java.lang.String to: org.apache.cxf.jaxrs.impl.ResponseImpl 19:23:56,025 TRACE Pipeline:113 - Processing exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 >>> Exchange[Message: ] 19:23:56,025 TRACE BeanProcessor:95 - Using a custom adapter as bean invocation: org.drools.camel.component.PostCxfrs@1a6313e1 19:23:56,026 TRACE DefaultTypeConverter:82 - Converting java.lang.String -> java.lang.String with value: 19:23:56,026 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,026 TRACE DefaultTypeConverter:82 - Converting java.lang.String -> java.lang.String with value: 19:23:56,027 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,027 TRACE DefaultErrorHandler:513 - Is exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 interrupted? false 19:23:56,027 TRACE DefaultErrorHandler:496 - Is exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 done? true 19:23:56,027 TRACE DefaultTypeConverter:82 - Converting java.lang.String -> java.lang.String with value: 19:23:56,028 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,028 TRACE Pipeline:90 - Processing exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 is continued being processed synchronously 19:23:56,028 TRACE Pipeline:186 - ExchangeId: ID-icilszxnb126-46148-1384255363195-1-1 should continue routing: false 19:23:56,028 TRACE DefaultTypeConverter:101 - Converting java.lang.String -> java.lang.String with value: 19:23:56,028 TRACE Pipeline:101 - Processing complete for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 >>> Exchange[Message: ] 19:23:56,029 TRACE DefaultTypeConverter:82 - Converting java.lang.String -> java.lang.String with value: 19:23:56,029 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,029 TRACE DefaultTypeConverter:82 - Converting java.lang.String -> java.lang.String with value: 19:23:56,029 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,030 TRACE DefaultTypeConverter:82 - Converting java.lang.String -> java.lang.String with value: 19:23:56,030 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,030 TRACE DefaultErrorHandler:513 - Is exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 interrupted? false 19:23:56,030 TRACE DefaultErrorHandler:496 - Is exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 done? true 19:23:56,031 TRACE DefaultTypeConverter:88 - Converting java.lang.String -> java.lang.String with value: 19:23:56,031 TRACE InstrumentationProcessor:88 - route: Recording duration: 200 millis for exchange: Exchange[Message: ] 19:23:56,031 TRACE DefaultTypeConverter:203 - Converting java.lang.String -> java.lang.String with value: 19:23:56,031 TRACE DefaultUnitOfWork:203 - UnitOfWork done for ExchangeId: ID-icilszxnb126-46148-1384255363195-1-1 with Exchange[Message: ] 19:23:56,032 TRACE DefaultInflightRepository:58 - Total 0 inflight exchanges. Last removed: ID-icilszxnb126-46148-1384255363195-1-1 19:23:56,032 TRACE DefaultTypeConverter:82 - Converting java.lang.String -> java.lang.String with value: 19:23:56,032 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,032 TRACE DefaultTypeConverter:82 - Converting java.lang.String -> java.lang.String with value: 19:23:56,032 TRACE AsyncProcessorHelper:82 - Exchange processed and is continued routed synchronously for exchangeId: ID-icilszxnb126-46148-1384255363195-1-1 -> Exchange[Message: ] 19:23:56,033 TRACE DefaultTypeConverter:155 - Converting java.lang.String -> java.lang.String with value: -- View this message in context: http://drools.46999.n3.nabble.com/drools-camel-server-execution-has-resul... Sent from the Drools: User forum mailing list archive at Nabble.com.

12 years, 5 months

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Re: [rules-users] Calling RuleSet from a Function/Another Rule

by Lance Leverich

Hi Ayon, I'm not personally familiar with Blaze, but I can tell you that in Drools, rules are not something that you "call". In Drools, rules are evaluated whenever the facts in your WorkingMemory change; and the consequences are executed according to agenda/rule-flow group, and salience settings. When the consequence of a rule introduces changes (adds a new fact, updates an existing fact, removes/retracts an existing fact) to the WorkingMemory, the rules that may be affected by that change are re-evaluated. Any new consequences are scheduled for execution, based upon the agenda/rule-flow group and/or salience settings. Any previously scheduled consequences may also be removed from the schedule, if the rule which caused them to be scheduled is no longer true. All of that said, if what you are wanting to accomplish is controlling the order of when consequences are executed then you should learn more about agendas, rule-flow groups, and salience. Otherwise, in order to cause a rule's consequences to execute, you should make sure your facts support the rule. Hope this helps, Lance Leverich

12 years, 5 months

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Access global functions in Test Scenarios in Guvnor

by franky0517

Hi, I have written a function in Guvnor. Now I am creating a test scenario where I want to call this function. As test scenario doesnt have "Free from DRL" option, is there an another way to call the function ? Thanks, Asim -- View this message in context: http://drools.46999.n3.nabble.com/Access-global-functions-in-Test-Scenari... Sent from the Drools: User forum mailing list archive at Nabble.com.

12 years, 5 months

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Calling RuleSet from a Function/Another Rule

by Chakraborty, Ayon (Genworth, Contractor)

Hello All, We are trying to migrate from Blaze to Drools Guvnor. In Blaze Rule Language, we have functions where depending on conditions, we can call one RuleSet or Decision Table. Is there any functionality in Drools where I can call rule inside another rule depending on some conditions. ( Suppose I have my DRL file and I want to call another rule in the action of one rule) Is that possible in Drools Guvnor 5.5? Any possible alternative ways in Drools? Thanks, Ayon Chakraborty

12 years, 5 months

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rules-users November 2013