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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