December 2013 - rules-users - Jboss List Archives

Drool 6.0.0.Final, 2 question re kie-maven-plugin, please?

by Matteo Mortari

Ciao, with premise I'm not a Maven expert... I'm following now the new recommended version for 6.0 KIE project/module development as documented in [1] by generating a new maven archetype "quickstart" but if compared to the documentation I found, at least in my case, I had at a minimum to apply also the following in the pom.xml: A. the packaging must be changed to "kjar" B. if the project and the rules depend on an external library/maven artifact, say for instance the object model or domain model objects the rules will be based on, it is NOT enough to declare them in the pom.xml <dependencies>, but the exact same dependencies MUST ALSO be also declared within the kie-maven-plugin <plugin> <dependencies> as well. Failing to do so, would imply that, respectively: A. when you run Maven with the default "mvn package" or "mvn deploy" etc, the kie-maven-plugin would not trigger B. kie-maven-plugin will fail the build because unable to resolve the "external" classes referenced in the .drl, with a message similar to [ERROR] Message [id=3, level=ERROR, path=package.drl, line=3, column=0 text=Unable to find class 'classname'] Questions are: 1. Is this correct, or I'm just complicating my life without noticing, and it is existing a simpler way, please? 2. Especially point #B, is this really the intended behavior, having to replicate the dependencies in the two parts of the pom.xml ? Thanks if somebody can feedback on this, Ciao MM I'm making reference to: [1] http://docs.jboss.org/drools/release/6.0.0.Final/drools-docs/html_single/... For reference, here is an example pom.xml I'm using: <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi=" http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.acme</groupId> <artifactId>my-rules</artifactId> <version>0.0.1</version>  <packaging>kjar</packaging>  <dependencies>  <dependency> <groupId>com.acme</groupId> <artifactId>object-model</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope>test</scope> </dependency> </dependencies> <build> <finalName>my-rules</finalName> <plugins> <plugin> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin> <plugin> <groupId>org.kie</groupId> <artifactId>kie-maven-plugin</artifactId> <version>6.0.0.Final</version> <extensions>true</extensions> <dependencies>  <dependency> <groupId>com.acme</groupId> <artifactId>object-model</artifactId> <version>0.0.1-SNAPSHOT</version> </dependency> </dependencies> </plugin> </plugins>  <pluginManagement> <plugins> <plugin> <groupId>org.eclipse.m2e</groupId> <artifactId>lifecycle-mapping</artifactId> <version>1.0.0</version> <configuration> <lifecycleMappingMetadata> <pluginExecutions> <pluginExecution> <pluginExecutionFilter> <groupId>org.kie</groupId> <artifactId>kie-maven-plugin</artifactId> <versionRange>[6.0.0,)</versionRange> <goals> <goal>build</goal> </goals> </pluginExecutionFilter> <action> <ignore /> </action> </pluginExecution> </pluginExecutions> </lifecycleMappingMetadata> </configuration> </plugin> </plugins> </pluginManagement> </build>  </project>

10 years, 10 months

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Drools KB Object hierarchy Serilisation and Deserialisation thread safety issue

by adarsh.chaini＠hsbcib.com

Hi, We have found that some of the drools classes are not thread safe and hence causing the whole KB serialisation and deserialisation issues in a highly concurrent distributed cluster. The below is an example of one of the instances we have come across where the usage of a non thread safe collection as instance variables has caused the issue. Could someone look into this and advise: 1) If this has been reported /identified and logged somewhere as an issue already 2)If there has been any fix to problems like this in later versions of 5.3.0.Final ?. 3)If not fixed already what is the process to initiate a fix. Caused by: java.io.InvalidObjectException: Illegal mappings count: -1 at java.util.HashMap.readObject(HashMap.java:1130) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at java.io.ObjectStreamClass.invokeReadObject( ObjectStreamClass.java:1004) at java.io.ObjectInputStream.readSerialData( ObjectInputStream.java:1891) at java.io.ObjectInputStream.readOrdinaryObject( ObjectInputStream.java:1796) at java.io.ObjectInputStream.readObject0( ObjectInputStream.java:1348) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370 ) at org.jbpm.workflow.core.DroolsAction.readExternal( DroolsAction.java:61) at org.jbpm.workflow.core.impl.DroolsConsequenceAction.readExternal( DroolsConsequenceAction.java:49) at java.io.ObjectInputStream.readExternalData( ObjectInputStream.java:1835) at java.io.ObjectInputStream.readOrdinaryObject( ObjectInputStream.java:1794) at java.io.ObjectInputStream.readObject0( ObjectInputStream.java:1348) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370 ) at org.drools.rule.JavaDialectRuntimeData.readExternal( JavaDialectRuntimeData.java:182) at java.io.ObjectInputStream.readExternalData( ObjectInputStream.java:1835) at java.io.ObjectInputStream.readOrdinaryObject( ObjectInputStream.java:1794) at java.io.ObjectInputStream.readObject0( ObjectInputStream.java:1348) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370 ) at java.util.HashMap.readObject(HashMap.java:1155) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at java.io.ObjectStreamClass.invokeReadObject( ObjectStreamClass.java:1004) at java.io.ObjectInputStream.readSerialData( ObjectInputStream.java:1891) at java.io.ObjectInputStream.readOrdinaryObject( ObjectInputStream.java:1796) at java.io.ObjectInputStream.readObject0( ObjectInputStream.java:1348) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370 ) at org.drools.rule.DialectRuntimeRegistry.readExternal( DialectRuntimeRegistry.java:59) at java.io.ObjectInputStream.readExternalData( ObjectInputStream.java:1835) at java.io.ObjectInputStream.readOrdinaryObject( ObjectInputStream.java:1794) at java.io.ObjectInputStream.readObject0( ObjectInputStream.java:1348) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370 ) at org.drools.rule.Package.readExternal(Package.java:197) at java.io.ObjectInputStream.readExternalData( ObjectInputStream.java:1835) at java.io.ObjectInputStream.readOrdinaryObject( ObjectInputStream.java:1794) at java.io.ObjectInputStream.readObject0( ObjectInputStream.java:1348) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370 ) at java.util.HashMap.readObject(HashMap.java:1155) at sun.reflect.GeneratedMethodAccessor4.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:601) at java.io.ObjectStreamClass.invokeReadObject( ObjectStreamClass.java:1004) at java.io.ObjectInputStream.readSerialData( ObjectInputStream.java:1891) at java.io.ObjectInputStream.readOrdinaryObject( ObjectInputStream.java:1796) at java.io.ObjectInputStream.readObject0( ObjectInputStream.java:1348) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370 ) at org.drools.common.AbstractRuleBase.readExternal( AbstractRuleBase.java:270) at org.drools.reteoo.ReteooRuleBase.readExternal( ReteooRuleBase.java:223) at org.drools.impl.KnowledgeBaseImpl.readExternal( KnowledgeBaseImpl.java:116) at java.io.ObjectInputStream.readExternalData( ObjectInputStream.java:1835) at java.io.ObjectInputStream.readOrdinaryObject( ObjectInputStream.java:1794) at java.io.ObjectInputStream.readObject0( ObjectInputStream.java:1348) at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370 ) at com.hsbc.gbm.dsl.domain.DSLRuleSet$Serializer.createInstance( DSLRuleSet.java:328) at com.hsbc.gbm.dsl.domain.DSLRuleSet$Serializer.createInstance( DSLRuleSet.java:1) at com.hsbc.gbm.dsl.domain.AbstractSerializer.deserialize( AbstractSerializer.java:144) Thanks and regards, Adarsh CHAINI SENIOR LEAD DEVELOPMENT SPECIALIST | HSBC Bank Plc 8 Canada Square, London E14 5HQ, UK _______________________________________________ Phone Int: (0)79914720 Ext: +44 (0)20 79914720 Mobile +44(0)7595530105 Email adarsh.chaini(a)hsbcib.com _______________________________________________ Protect our environment - please only print this if you have to! ************************************************************ HSBC Bank plc may be solicited in the course of its placement efforts for a new issue, by investment clients of the firm for whom the Bank as a firm already provides other services. It may equally decide to allocate to its own proprietary book or with an associate of HSBC Group. This represents a potential conflict of interest. HSBC Bank plc has internal arrangements designed to ensure that the firm would give unbiased and full advice to the corporate finance client about the valuation and pricing of the offering as well as internal systems, controls and procedures to identify and manage conflicts of interest. HSBC Bank plc Registered Office: 8 Canada Square, London E14 5HQ, United Kingdom Registered in England - Number 14259 Authorised by the Prudential Regulation Authority and regulated by the Financial Conduct Authority and the Prudential Regulation Authority ************************************************************ ----------------------------------------- SAVE PAPER - THINK BEFORE YOU PRINT! This transmission has been issued by a member of the HSBC Group "HSBC" for the information of the addressee only and should not be reproduced and/or distributed to any other person. Each page attached hereto must be read in conjunction with any disclaimer which forms part of it. Unless otherwise stated, this transmission is neither an offer nor the solicitation of an offer to sell or purchase any investment. Its contents are based on information obtained from sources believed to be reliable but HSBC makes no representation and accepts no responsibility or liability as to its completeness or accuracy.

10 years, 10 months

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DRL file not getting picked

by dwipin

Hi, I am using kie-spring.6.0.0.Final artefact to build my project. This is my app ctx data - <kie:kmodule id="module-1"> <kie:kbase name="kbase" packages="validation_rules"> <kie:ksession name="ksession"> <kie:consoleLogger /> </kie:ksession> </kie:kbase> </kie:kmodule> <bean id="kiePostProcessor" class="org.kie.spring.KModuleBeanFactoryPostProcessor" /> <bean id="ruleService" class="com.poc.RuleService"> <property name="ksession" ref="ksession" /> </bean> My Rule Service -> ksession.fireAllRules(); log.debug("...finished running ."); My DRL File input -> package validation_rules rule "Test Rule" when then System.out.println("Testing..."); end I wanted to test with a sample rule without any conditions. However this never gets executed. This DRL file is present under src/main/resources/validation_rules. The KieSession gets injected properly though. Thanks and Regards, Dwipin Chandran. -- View this message in context: http://drools.46999.n3.nabble.com/DRL-file-not-getting-picked-tp4027476.html Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 10 months

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Is there any API in drools 6.0, which creates drl file?

by neal

I am looking for an API in drools 6.0, Which will create a drl file? I am aware about this thing, http://drools.46999.n3.nabble.com/How-to-create-a-drl-file-or-decision-ta... https://github.com/droolsjbpm/drools/blob/master/drools-compiler/src/test... Old API: https://github.com/droolsjbpm/drools/tree/master/drools-compiler/src/main... IS there any new API in drool 6.0? OR any better way to do it? -- View this message in context: http://drools.46999.n3.nabble.com/Is-there-any-API-in-drools-6-0-which-cr... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 11 months

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Eclipse audit view problem in 6.0.1.Final

by sumantp

The Eclipse audit view using the 6.0.1.Final plugin says "The selected audit log is empty" when opening a seemingly valid log file. Steps to reproduce the problem ... 1. Use Eclipse Kepler 2. Install plugin using update URL http://download.jboss.org/drools/release/6.0.1.Final/org.drools.updatesite/ 3. Create hello world project using the drools project wizard 4. Modify kmodule.xml to specify file logger <fileLogger file="events" threaded="true" interval="10"/> 5. Ensure logger is closed before exiting 6. Open the log file in the audit view -- View this message in context: http://drools.46999.n3.nabble.com/Eclipse-audit-view-problem-in-6-0-1-Fin... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 11 months

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Running Feedback during drools run

by glambert27

I have a project that requires the use of stateful sessions. Upwards of 70K facts are inserted into the session. As a result the running time for the rules to run is upwards of 10-15mins. I need a way to have the user to get feedback of running rule process. Statusbar or something of the likes? I've attached my rule file sanitized to protect the innocent. sanitized_rules.drl <http://drools.46999.n3.nabble.com/file/n4027470/sanitized_rules.drl> -- View this message in context: http://drools.46999.n3.nabble.com/Running-Feedback-during-drools-run-tp40... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 11 months

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Interupting Stateful session

by glambert27

Hi, I have a project that requires the use of stateful sessions. Upwards of 70K facts are inserted into the session. As a result the running time for the rules to run is upwards of 10-15mins. I need a way to have the user cancel the running rule process. Using a listener perhaps? I've attached my rule file sanitized to protect the innocent. sanitized_rules.drl <http://drools.46999.n3.nabble.com/file/n4027464/sanitized_rules.drl> I'd appreciate any help or incite. maybe some help in getting my rules to run faster as well. -- View this message in context: http://drools.46999.n3.nabble.com/Interupting-Stateful-session-tp4027464.... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 11 months

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Create kieBase programmatically: WARN "No files found for KieBase defaultKieBase"?

by Frank Langelage

Hello, I need your help! I'm trying to migrate from Drools 5.5.0 to 6.0.1, creating the KnowledgeBase programmatically. But buildAll gives me WARN "No files found for KieBase defaultKieBase". What's missing? My code is based on the example found in documentation. fileName is pointing to an xls file with decision table. Writing it to kieFileSystem seemed to work correct, as kieFileSystem.read( fileName ).length is showing the right number of bytes. Logging output: DEBUG [RuleBuilder#buildKieBase] Get kieServices DEBUG [RuleBuilder#buildKieBase] Get kieRepository DEBUG [RuleBuilder#buildKieBase] Get new kieFileSystem DEBUG [RuleBuilder#buildKieBase] Add /mbi/etc/MailFilter_hgm2e-langfr-sb2000-ipc.xls to kieFileSystem DEBUG [RuleBuilder#buildKieBase] Get new kieBuilder DEBUG [RuleBuilder#buildKieBase] 22016 DEBUG [RuleBuilder#buildKieBase] Build all Rules WARN [org.drools.compiler.kie.builder.impl.AbstractKieModule#buildKnowledgePackages] No files found for KieBase defaultKieBase INFO [org.drools.compiler.kie.builder.impl.KieRepositoryImpl#addKieModule] KieModule was added:MemoryKieModule[ ReleaseId=org.default:artifact:1.0.0-SNAPSHOT] DEBUG [RuleBuilder#buildKieBase] Get new kieContainer DEBUG [RuleBuilder#buildKieBase] Get kieBase Code: RuleBuilder.LOGGER.debug( "Get kieServices" ); KieServices kieServices = KieServices.Factory.get(); RuleBuilder.LOGGER.debug( "Get kieRepository" ); KieRepository kieRepository = kieServices.getRepository(); RuleBuilder.LOGGER.debug( "Get new kieFileSystem" ); KieFileSystem kieFileSystem = kieServices.newKieFileSystem(); XADiskConnection connection = null; try { connection = this.xaDisk.getConnection(); XAFileInputStream fis = connection.createXAFileInputStream( new File( fileName ) ); try ( InputStream is = new XAFileInputStreamWrapper( fis ) ) { RuleBuilder.LOGGER.debug( "Add " + fileName + " to kieFileSystem" ); kieFileSystem.write( fileName, kieServices.getResources().newInputStreamResource( is ) ); } catch ( IOException e ) { // ignore } fis.close(); } catch ( FileNotExistsException e ) { // Datei '%s' nicht gefunden ServiceStringResponse ssr = this.mbiFxtxtFacade.getTranslation( Integer.valueOf( 215421 ), locales ); throw new MbiException( e, RuleBuilder.LOGGER, String.format( ssr.getValue(), fileName ) ); } catch ( InsufficientPermissionOnFileException | LockingFailedException | NoTransactionAssociatedException e ) { throw new MbiException( e, RuleBuilder.LOGGER ); } catch ( ResourceException | InterruptedException e ) { throw new MbiException( e, RuleBuilder.LOGGER ); } finally { if ( connection != null ) { connection.close(); } } RuleBuilder.LOGGER.debug( "Get new kieBuilder" ); KieBuilder kieBuilder = kieServices.newKieBuilder( kieFileSystem ); RuleBuilder.LOGGER.debug( kieFileSystem.read( fileName ).length ); RuleBuilder.LOGGER.debug( "Build all Rules" ); kieBuilder.buildAll(); RuleBuilder.LOGGER.debug( "Get new kieContainer" ); KieContainer kieContainer = kieServices.newKieContainer( kieRepository.getDefaultReleaseId() ); RuleBuilder.LOGGER.debug( "Get kieBase" ); KieBase kieBase = kieContainer.getKieBase();

10 years, 11 months

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Then part of DRL file can not use Java Generic?

by wtang

Does Drools DRL file support Java generic? I have the following in THEN part of the DRL rule file: import java.util.*; ..... Then List<String> stringList = new ArrayList<String>(); // error could not resolve class ArrayList<String> But If I do: List stringList = new ArrayList(); // this works fine! thx! -- View this message in context: http://drools.46999.n3.nabble.com/Then-part-of-DRL-file-can-not-use-Java-... Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 11 months

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NPE when combining rules

by sumantp

Hi again, I had previously posted an issue with event re-evaluation when using accumulate - http://drools.46999.n3.nabble.com/Prevent-re-evaluation-of-events-in-stre... I resolved the issue by using a flag to ensure that an event is evaluated just once. I used two rules, one that would match the condition I'm interested in and the second to set the flag on all events that did not match the condition. I used salience to control the order. Here are the rules: rule "Rule 1: Amount exceeds average" salience 2 when $event : Transaction(!isProcessed(), $sequence : sequence, $account : account, $amount : amount) Number($avg : doubleValue, $amount > $avg) from accumulate(Transaction(account == $account, $amount_ : amount) over window:length(100), average($amount_)) then System.out.println("\t***ALERT***: Amount exceeds average = " + $avg + ", Amount = " + $amount + ", Sequence = " + $sequence); $event.setProcessed(); update($event) end rule "(Prune rule 1) Amount exceeds average" salience 1 when $event : Transaction(!isProcessed()) then $event.setProcessed(); update($event) end These rules work great! Next, I created another rule that checks if a metric exceeds a threshold but suppresses consecutive repeating violations. Here's the rule: rule "Rule 2: Suppress repeating violations" when $prevevent : Transaction($account : account, !(amount > 150)) $thisevent : Transaction($sequence : sequence, account == $account, this after $prevevent, $amount : amount, $amount > 150) not (Transaction(account == $account, this after $prevevent, this before $thisevent)) then System.out.println("\t***ALERT***: Amount exceeds threshold (non-repeating) = " + $amount + ", Sequence = " + $sequence); end This rule, when used by itself (the only rule in the drl), works great! The problem happens when I include all 3 rules in the drl file. I get a NPE. Here's the output: Inserting: (Average = 100.0) : Sequence = 1, Account = 1, Amount = 100.0 Inserting: (Average = 100.0) : Sequence = 2, Account = 1, Amount = 100.0 Inserting: (Average = 133.33333333333334) : Sequence = 3, Account = 1, Amount = 200.0 ***ALERT***: Amount exceeds average = 133.33333333333334, Amount = 200.0, Sequence = 3 java.lang.NullPointerException at org.drools.core.time.impl.JDKTimerService.removeJob(JDKTimerService.java:132) at org.drools.core.phreak.PhreakTimerNode.doLeftUpdates(PhreakTimerNode.java:124) at org.drools.core.phreak.PhreakTimerNode.doNode(PhreakTimerNode.java:65) at org.drools.core.phreak.RuleNetworkEvaluator.innerEval(RuleNetworkEvaluator.java:357) at org.drools.core.phreak.RuleNetworkEvaluator.outerEval(RuleNetworkEvaluator.java:161) at org.drools.core.phreak.RuleNetworkEvaluator.evaluateNetwork(RuleNetworkEvaluator.java:116) at org.drools.core.phreak.RuleExecutor.reEvaluateNetwork(RuleExecutor.java:194) at org.drools.core.phreak.RuleExecutor.evaluateNetworkAndFire(RuleExecutor.java:67) at org.drools.core.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:937) at org.drools.core.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1201) at org.drools.core.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:958) at org.drools.core.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:932) at org.drools.core.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:256) at com.sample.BankRules.main(BankRules.java:26) The sequence of amounts I'm inserting is: 100, 100, 200, 200, 200, 100, 200, 200, 200, 100 I'm using 6.0.0.Final. The java code is essentially the same as in the link above. Help! -- View this message in context: http://drools.46999.n3.nabble.com/NPE-when-combining-rules-tp4027267.html Sent from the Drools: User forum mailing list archive at Nabble.com.

10 years, 11 months

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rules-users December 2013