2009/1/13 psentosa <psentosa@yahoo.com>

Hallo,

I have a rule like this, defined in Guvnor:
when
    Activity ( $date : date, workingTime > 240)

then
   System.out.println("Working time limit has been reached");
   violatedRegulation.add(new String("regulation.general.working1"));


violatedRegulation is a List<String> which I set as a global because later
on I will extract the content of that list which is a key defined in a
properties file

ksession.setGlobal("violatedRegulation", violatedRegulation);
ksession.executeObject(activity);


but then I got the following exception:
15:52:59,687 INFO  [STDOUT] Working time limit has been reached
15:52:59,687 ERROR [MyExceptionInterceptor] [Error: could not create
constructor: No ClassLoaders found for: String ]
[Near : {... Unknown ....}]
            ^
org.drools.runtime.rule.ConsequenceException: [Error: could not create
constructor: No ClassLoaders found for: String ]
[Near : {... Unknown ....}]
            ^
       at
org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:23)
       at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:918)
       at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:871)
       at org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1035)
       at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:612)
       at
org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:589)
       at
org.drools.impl.StatelessKnowledgeSessionImpl.executeObject(StatelessKnowledgeSessionImpl.java:158)
..................

Caused by: [Error: could not create constructor: No ClassLoaders found for:
String ]
[Near : {... Unknown ....}]
            ^
       at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeObjectCreation(ReflectiveAccessorOptimizer.java:805)
       at
org.mvel2.optimizers.dynamic.DynamicOptimizer.optimizeObjectCreation(DynamicOptimizer.java:80)
       at
org.mvel2.ast.NewObjectNode.getReducedValueAccelerated(NewObjectNode.java:148)
       at
org.mvel2.compiler.ExecutableAccessor.getValue(ExecutableAccessor.java:37)
       at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.getMethod(ReflectiveAccessorOptimizer.java:590)
       at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileGetChain(ReflectiveAccessorOptimizer.java:285)
       at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeAccessor(ReflectiveAccessorOptimizer.java:134)
       at
org.mvel2.optimizers.dynamic.DynamicOptimizer.optimizeAccessor(DynamicOptimizer.java:61)
       at org.mvel2.ast.ASTNode.getReducedValueAccelerated(ASTNode.java:127)
       at org.mvel2.MVELRuntime.execute(MVELRuntime.java:91)
       at
org.mvel2.compiler.CompiledExpression.getValue(CompiledExpression.java:101)
       at org.mvel2.MVEL.executeExpression(MVEL.java:1025)
       at org.drools.base.mvel.MVELConsequence.evaluate(MVELConsequence.java:89)
       at org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:909)
       ... 97 more
Caused by: java.lang.ClassNotFoundException: No ClassLoaders found for:
String
       at org.jboss.mx.loading.LoadMgr3.beginLoadTask(LoadMgr3.java:306)
       at
org.jboss.mx.loading.RepositoryClassLoader.loadClassImpl(RepositoryClassLoader.java:521)
       at
org.jboss.mx.loading.RepositoryClassLoader.loadClass(RepositoryClassLoader.java:415)
       at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
       at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
       at java.lang.Class.forName0(Native Method)
       at java.lang.Class.forName(Class.java:164)
       at org.mvel2.util.ParseTools.createClass(ParseTools.java:458)
       at org.mvel2.util.ParseTools.findClass(ParseTools.java:796)
       at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.compileConstructor(ReflectiveAccessorOptimizer.java:832)
       at
org.mvel2.optimizers.impl.refl.ReflectiveAccessorOptimizer.optimizeObjectCreation(ReflectiveAccessorOptimizer.java:799)
       ... 110 more

Any help would be very appreciated

ps: the very same rule worked with drools 4.0.7

Regards




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