Let me get this right, i musst use the JANINO-Compiler to avoid problems with JBoss AS resp. Tomcat?

There is another problem: the PackageBuilderConfiguration-Method “setCompiler(PackageBuilderConfiguration.JANINO)” does not exists in Drools 4.0.1 

---

Von: rules-users-bounces@lists.jboss.org [mailto:rules-users-bounces@lists.jboss.org] Im Auftrag von Edson Tirelli
Gesendet: Montag, 24. September 2007 15:48
An: Rules Users List
Betreff: Re: [rules-users] JBoss AS 4.0.5 GA + Drools 4.0.1

    This is a known conflict between JDT versions used by tomcat and drools.

http://wiki.jboss.org/wiki/Wiki.jsp?page=RulesTomcat

    []s
    Edson

2007/9/24, Guardian <d.h.j.@gmx.de>:

Hello,

I have many problems to integrate Drools in my existing Application that is running on JBoss AS 4.0.5 GA.

When I try to load and execute the rule-file I get the following Exception:

java.lang.RuntimeException : java.lang.NoSuchMethodError: org.eclipse.jdt.internal.compiler.CompilationResult.getProblems()[Lorg/eclipse/jdt/core/compiler/CategorizedProblem;

javax.ejb.EJBException : java.lang.RuntimeException : java.lang.NoSuchMethodError: org.eclipse.jdt.internal.compiler.CompilationResult.getProblems()[Lorg/eclipse/jdt/core/compiler/CategorizedProblem;

      at org.jboss.ejb3.tx.Ejb3TxPolicy.handleExceptionInOurTx( Ejb3TxPolicy.java:69)

      at org.jboss.aspects.tx.TxPolicy.invokeInOurTx( TxPolicy.java:83)

      at org.jboss.aspects.tx.TxInterceptor$Required.invoke( TxInterceptor.java:191)

      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext( MethodInvocation.java:101)

      at org.jboss.aspects.tx.TxPropagationInterceptor.invoke( TxPropagationInterceptor.java:76)

      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext( MethodInvocation.java:101)

      at org.jboss.ejb3.stateless.StatelessInstanceInterceptor.invoke(StatelessInstanceInterceptor.java:62 )

      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext( MethodInvocation.java:101)

      at org.jboss.aspects.security.AuthenticationInterceptor.invoke(AuthenticationInterceptor.java:77 )

      at org.jboss.ejb3.security.Ejb3AuthenticationInterceptor.invoke(Ejb3AuthenticationInterceptor.java:102 )

      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext( MethodInvocation.java:101)

      at org.jboss.ejb3.ENCPropagationInterceptor.invoke( ENCPropagationInterceptor.java:47)

      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext( MethodInvocation.java:101)

      at org.jboss.ejb3.asynchronous.AsynchronousInterceptor.invoke( AsynchronousInterceptor.java:106)

      at org.jboss.aop.joinpoint.MethodInvocation.invokeNext( MethodInvocation.java:101)

      at org.jboss.ejb3.stateless.StatelessContainer.dynamicInvoke( StatelessContainer.java:263)

      at org.jboss.aop.Dispatcher.invoke( Dispatcher.java:106)

      at org.jboss.aspects.remoting.AOPRemotingInvocationHandler.invoke(AOPRemotingInvocationHandler.java:82 )

      at org.jboss.remoting.ServerInvoker.invoke( ServerInvoker.java:828)

      at org.jboss.remoting.ServerInvoker.invoke( ServerInvoker.java:681)

      at org.jboss.remoting.transport.socket.ServerThread.processInvocation(ServerThread.java:358 )

      at org.jboss.remoting.transport.socket.ServerThread.dorun(ServerThread.java:412 )

My Application consists of the following parts:

The rule-file:

#created on: 04.09.2007

package drools.rules

#list any import classes here.

import drools.session.Message;

#declare any global variables here

rule "Hello World"

when

            m : Message( status == Message.HELLO, message : message )

then

            System.out.println( message );

            m.setMessage( "Goodbye cruel world" );

            m.setStatus( Message.GOODBYE );

update( m );

end

rule "GoodBye"

no-loop true

when

            m : Message( status == Message.GOODBYE, message : message )

then

System.out.println( message );

            m.setMessage( message );

end

a Class to encapsulate the rule-initialisation and rule-execution (wrapper-Class):

public class RuleEngineWrapper

{

private WorkingMemory workingMemory;

private boolean debugMode = false;

private DebugAgendaEventListener debugListener;

public RuleEngineWrapper(WorkingMemory wm) {

this. workingMemory = wm;

debugListener = new DebugAgendaEventListener();

        }

/**

* construct a RuleEngineWrapper with only a rule- file- name, no idea of

* callers' class. Assume the rule file is located

*

* @param rulesFile

*/

public RuleEngineWrapper(String rulesFile) {

this(RuleEngineWrapper. class, rulesFile);

        }

/**

* construct a RuleEngineWrapper with only a calling object known

*

* @param caller

* @param rulesFile

*/

public RuleEngineWrapper(Object caller, String rulesFile) {

this(caller.getClass(), rulesFile);

        }

/**

* construct a RuleEngineWrapper with Class caller and rule- file- name known.

* We load the rule- file as classpath resource.

*

* @param caller

* @param rulesFile

*/

public RuleEngineWrapper(Class caller, String rulesFile) {

super();

try {

final PackageBuilder builder = new PackageBuilder();

System.out .println(caller);

                builder.addPackageFromDrl( new InputStreamReader(caller

                        .getResourceAsStream(rulesFile)));

final RuleBase ruleBase = RuleBaseFactory.newRuleBase ();

ruleBase.addPackage(builder.getPackage());

workingMemory = ruleBase.newStatefulSession();

debugListener = new DebugAgendaEventListener();

            } catch (Exception e) {

                System. out.println( "cannot read rule file: " + rulesFile);

            }

        }

/**

* Allow to add arbitrary objects as facts. Users can add any objects to

* workingMemory

*

* @param o

* the fact to be added

*/

public void addFact(Object o) {

workingMemory.insert(o);

        }

/**

* Execute rules.

*

*/

public void executeRules() {

workingMemory.fireAllRules();

        }

...

[Mensagem cortada]  
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  Edson Tirelli
  Software Engineer - JBoss Rules Core Developer
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