[jboss-jira] [JBoss JIRA] (DROOLS-773) Can't load correct model class info when incrementally load kie jar

Hanbing Luo (JIRA) issues at jboss.org
Mon Apr 27 03:18:52 EDT 2015 

     [ https://issues.jboss.org/browse/DROOLS-773?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hanbing Luo updated DROOLS-773:
-------------------------------
    Steps to Reproduce: 
How to reproduce
1) Create a test model say TestModelChangeObj and create a field say field_1. Create a test rule say test_model_change.drl and new a TestModelChangeObj in action and set field_1 for this object. To help identify which version of rule is used/fired you can print some debug info.

    when
	// your condition
    then
	TestModelChangeObj testObj=new TestModelChangeObj();
	testObj.setField_1("test_field_1");
	System.out.println("setField_1 finished");

2) Build and release your package using 0.0.1-SNAPSHOT
3) Write client code to use kie server released jars. Create some inputs to make sure test_model_change is fired. When JVM first load everything works fine.

Code snippet
this.ks = KieServices.Factory.get();
    this.kbaseConf = ks.newKieBaseConfiguration();
    this.releaseId = ks.newReleaseId(GROUP_ID, lowerPkgName, VERSION_EXP);
    this.container = ks.newKieContainer(releaseId);
    kScanner = ks.newKieScanner(container);
    // Start the KieScanner polling the Maven repository
    kScanner.start(interval * 1000);
    kScanner.scanNow();
    kbase = container.newKieBase(kbaseConf);
    KieSession kieSession = kbase.newKieSession();
    // prepare inputs ...
    kieSession.fireAllRules(new MyFilter());

4) Set a debug point to pause some time which make sue use same JVM. In kie GUI create a new field say field_2 and change test_model_change.drl to set field_2 for TestModelChangeObj in action.
5) Build and release this change and let JVM incrementally load new jar. Create same inputs then you will see this bug. This bug has different behavior for "mvel" and "java" dialect in test_model_change.drl.

a) Mvel dialect: Throw error when call container.newKieBase(kbaseConf);

[Error: unable to resolve method using strict-mode: com.yourcompany.TestModelChangeObj.setField_2(java.lang.String)]
[Near : {... testObj.setField_2("test_field_2"); ....}]
                     ^
[Line: 3, Column: 10]
	at org.mvel2.compiler.PropertyVerifier.getMethod(PropertyVerifier.java:577)
	at org.mvel2.compiler.PropertyVerifier.analyze(PropertyVerifier.java:120)
	at org.mvel2.compiler.ExpressionCompiler.verify(ExpressionCompiler.java:384)
	at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:277)
	at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:63)
	at org.mvel2.MVEL.compileExpression(MVEL.java:810)
	at org.drools.core.base.mvel.MVELCompilationUnit.compile(MVELCompilationUnit.java:433)
	at org.drools.core.base.mvel.MVELCompilationUnit.getCompiledExpression(MVELCompilationUnit.java:244)
	at org.drools.core.base.mvel.MVELCompilationUnit.getCompiledExpression(MVELCompilationUnit.java:205)
	at org.drools.core.base.mvel.MVELConsequence.compile(MVELConsequence.java:81)
	at org.drools.core.rule.MVELDialectRuntimeData.onBeforeExecute(MVELDialectRuntimeData.java:173)
	at org.drools.core.rule.DialectRuntimeRegistry.onBeforeExecute(DialectRuntimeRegistry.java:144)
	at org.drools.core.impl.KnowledgeBaseImpl.addPackages(KnowledgeBaseImpl.java:817)
	at org.drools.core.impl.KnowledgeBaseImpl.addKnowledgePackages(KnowledgeBaseImpl.java:272)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.createKieBase(KieContainerImpl.java:455)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieBase(KieContainerImpl.java:414)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieBase(KieContainerImpl.java:409)

b) Java dialect: throw NoSuchMethodError when call kieSession.fireAllRules(new MyFilter());

KieBase newKbase=container.newKieBase(kbaseConf);
KieSession kieSession = newKbase.newKieSession();
// prepare inputs ...
kieSession.fireAllRules(new MyFilter());

java.lang.NoSuchMethodError: com.yourcompany.TestModelChangeObj.setField_2(Ljava/lang/String)



  was:
How to reproduce
1) Create a test model say TestModelChangeObj and create a field say field_1. Create a test rule say test_model_change.drl and new a TestModelChangeObj in action and set field_1 for this object. To help identify which version of rule is used/fired you can print some debug info.

    when
	// your condition
    then
	TestModelChangeObj testObj=new TestModelChangeObj();
	testObj.setField_1("test_field_1");
	System.out.println("setField_1 finished");

2) Build and release your package using 0.0.1-SNAPSHOT
3) Write client code to use kie server released jars. Create some inputs to make sure test_model_change is fired. When JVM first load everything works fine.

Code snippet
this.ks = KieServices.Factory.get();
    this.kbaseConf = ks.newKieBaseConfiguration();
    this.releaseId = ks.newReleaseId(GROUP_ID, lowerPkgName, VERSION_EXP);
    this.container = ks.newKieContainer(releaseId);
    kScanner = ks.newKieScanner(container);
    // Start the KieScanner polling the Maven repository
    kScanner.start(interval * 1000);
    kScanner.scanNow();
    kbase = container.newKieBase(kbaseConf);
    KieSession kieSession = kbase.newKieSession();
    // prepare inputs ...
    kieSession.fireAllRules(new MyFilter());

4) Set a debug point to pause some time which make sue use same JVM. In kie GUI create a new field say field_2 and change test_model_change.drl to set field_2 for TestModelChangeObj in action.
5) Build and release this change and let JVM incrementally load new jar. Create same inputs then you will see this bug. This bug has different behavior for "mvel" and "java" dialect in test_model_change.drl.

a) Mvel dialect: Throw error when call container.newKieBase(kbaseConf);

[Error: unable to resolve method using strict-mode: com.yourcompany.TestModelChangeObj.setField_2(java.lang.String)]
[Near : {... testObj.setField_2("test_field_2"); ....}]
                     ^
[Line: 3, Column: 10]
	at org.mvel2.compiler.PropertyVerifier.getMethod(PropertyVerifier.java:577)
	at org.mvel2.compiler.PropertyVerifier.analyze(PropertyVerifier.java:120)
	at org.mvel2.compiler.ExpressionCompiler.verify(ExpressionCompiler.java:384)
	at org.mvel2.compiler.ExpressionCompiler._compile(ExpressionCompiler.java:277)
	at org.mvel2.compiler.ExpressionCompiler.compile(ExpressionCompiler.java:63)
	at org.mvel2.MVEL.compileExpression(MVEL.java:810)
	at org.drools.core.base.mvel.MVELCompilationUnit.compile(MVELCompilationUnit.java:433)
	at org.drools.core.base.mvel.MVELCompilationUnit.getCompiledExpression(MVELCompilationUnit.java:244)
	at org.drools.core.base.mvel.MVELCompilationUnit.getCompiledExpression(MVELCompilationUnit.java:205)
	at org.drools.core.base.mvel.MVELConsequence.compile(MVELConsequence.java:81)
	at org.drools.core.rule.MVELDialectRuntimeData.onBeforeExecute(MVELDialectRuntimeData.java:173)
	at org.drools.core.rule.DialectRuntimeRegistry.onBeforeExecute(DialectRuntimeRegistry.java:144)
	at org.drools.core.impl.KnowledgeBaseImpl.addPackages(KnowledgeBaseImpl.java:817)
	at org.drools.core.impl.KnowledgeBaseImpl.addKnowledgePackages(KnowledgeBaseImpl.java:272)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.createKieBase(KieContainerImpl.java:455)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieBase(KieContainerImpl.java:414)
	at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieBase(KieContainerImpl.java:409)

b) Java dialect: throw NoSuchMethodError when call kieSession.fireAllRules(new MyFilter());

KieBase newKbase=container.newKieBase(kbaseConf);
KieSession kieSession = newKbase.newKieSession();
// prepare inputs ...
kieSession.fireAllRules(new MyFilter());

java.lang.NoSuchMethodError: com.yourcompany.TestModelChangeObj.setField_2(Ljava/lang/String;)





> Can't load correct model class info when incrementally load kie jar
> -------------------------------------------------------------------
>
>                 Key: DROOLS-773
>                 URL: https://issues.jboss.org/browse/DROOLS-773
>             Project: Drools
>          Issue Type: Bug
>    Affects Versions: 6.2.0.Final
>         Environment: drools version: 6.2.0.Final
> -bash-4.1$ java -version
> java version "1.7.0_76"
> Java(TM) SE Runtime Environment (build 1.7.0_76-b13)
> Java HotSpot(TM) 64-Bit Server VM (build 24.76-b04, mixed mode)
> -bash-4.1$ lsb_release -a
> LSB Version:	:base-4.0-amd64:base-4.0-noarch:core-4.0-amd64:core-4.0-noarch:graphics-4.0-amd64:graphics-4.0-noarch:printing-4.0-amd64:printing-4.0-noarch
> Distributor ID:	CentOS
> Description:	CentOS release 6.6 (Final)
> Release:	6.6
> Codename:	Final
>            Reporter: Hanbing Luo
>            Assignee: Mark Proctor
>
> Can't load correct model class info when incrementally load kie jar. New created field/method in model class can't be used in rule although rule compile successfully in kie GUI.
> I also did some investigation and looks like changed model class info is not correct in getTypeDeclarations.
> if (kiePackage instanceof InternalKnowledgePackage) {
>       InternalKnowledgePackage ikp = (InternalKnowledgePackage) kiePackage;
>       Map<String,TypeDeclaration> modelsMap = ikp.getTypeDeclarations();
> }



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