Re: [rules-users] Drools and Jersey

Cool that you find that :) Cheers 2012/3/14 mike <mikemps(a)gmail.com&gt; > Hi Mauricio, > > I spent like 2 days debugging, before realizing that mvel was the > culprit. The error is a Null Exception when resolving some service inside > Jersey. I have to check my browser history at home for more details but the > exception was happening inside Jersey. > > Please notice I reduced the code to the minimum. I had 'real' code doing > more reasonable things with new Client. Client c = new Client() fails too. > > Thank you very much > Mike > > > 2012/3/14 Mauricio Salatino <salaboy(a)gmail.com&gt; > >> Hi Mike, I've never tried that before (a rule without the when part..) >> is good to know that it works :) >> Humm that's sounds weird.. why the dialect is affecting your Client >> creation. >> It could be that there is something wrong with the expression evaluation. >> It looks like MVEL cannot compile the new Client(); expression -> at >> java.lang.String.<init>(Unknown Source) >> Did you try with something like: >> then \n >> Client c = new Client(); >> >> I'm just guessing here, because it looks strange >> >> >> 2012/3/14 mike <mikemps(a)gmail.com&gt; >> >>> Hi Mauricio, >>> >>> Thank you for the speedy reply. Ia m making rest call to web services >>> using jersey. I simplified the rule to the max. The 'when' is not really >>> needed. I get the exception on the call to "new Client()". Please keep in >>> mind it works without dialect "mvel". >>> >>> Thank you very much >>> Mike >>> >>> Here's the stack trace ............. >>> java.lang.StringIndexOutOfBoundsException: String index out of range: -1 >>> at java.lang.String.<init>(Unknown Source) >>> at >>> org.mvel2.CompileException.showCodeNearError(CompileException.java:149) >>> at >>> org.mvel2.CompileException.generateErrorMessage(CompileException.java:219) >>> at org.mvel2.CompileException.toString(CompileException.java:62) >>> at java.lang.Throwable.<init>(Throwable.java:242) >>> at java.lang.Exception.<init>(Unknown Source) >>> at java.lang.RuntimeException.<init>(Unknown Source) >>> at >>> org.drools.runtime.rule.ConsequenceException.<init>(ConsequenceException.java:31) >>> at >>> org.drools.runtime.rule.impl.DefaultConsequenceExceptionHandler.handleException(DefaultConsequenceExceptionHandler.java:39) >>> at >>> org.drools.common.DefaultAgenda.fireActivation(DefaultAgenda.java:1101) >>> at org.drools.common.DefaultAgenda.fireNextItem(DefaultAgenda.java:1029) >>> at >>> org.drools.common.DefaultAgenda.fireAllRules(DefaultAgenda.java:1251) >>> at >>> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:709) >>> at >>> org.drools.common.AbstractWorkingMemory.fireAllRules(AbstractWorkingMemory.java:673) >>> at >>> org.drools.impl.StatefulKnowledgeSessionImpl.fireAllRules(StatefulKnowledgeSessionImpl.java:218) >>> at >>> com.ultimatesoftware.engine.tests.Wip.drools_new_client(Wip.java:32) >>> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) >>> at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) >>> at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) >>> at java.lang.reflect.Method.invoke(Unknown Source) >>> at >>> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) >>> at >>> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) >>> at >>> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) >>> at >>> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) >>> at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263) >>> at >>> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:69) >>> at >>> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:48) >>> at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) >>> at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) >>> at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) >>> at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) >>> at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) >>> at org.junit.runners.ParentRunner.run(ParentRunner.java:292) >>> at >>> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) >>> at >>> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) >>> at >>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) >>> at >>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) >>> at >>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) >>> at >>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) >>> >>> >>> >>> 2012/3/14 Mauricio Salatino <salaboy(a)gmail.com&gt; >>> >>>> what are you trying to do? >>>> what's the error? >>>> >>>> the rule should look like >>>> >>>> rule "create Rest Client" >>>> when >>>> then new Client(); >>>> end >>>> >>>> 2012/3/14 mike <mikemps(a)gmail.com&gt; >>>> >>>>> Hi there, >>>>> >>>>> I am trying to make rest calls from Drools. For that I am using >>>>> Jersey http://jersey.java.net/. I cannot no get it to work if I use >>>>> mvel, otherwise it works fine. >>>>> >>>>> Here is a sample rule: >>>>> ---------------------------------------------------------- >>>>> import com.sun.jersey.api.client.Client; >>>>> >>>>> dialect "mvel" >>>>> >>>>> rule "create Rest Client" >>>>> then new Client(); >>>>> end >>>>> ---------------------------------------------------------- >>>>> >>>>> I would love to be able to use mvel since it curves java syntax :) >>>>> >>>>> Thank you >>>>> Mike >>>>> >>>>> _______________________________________________ >>>>> rules-users mailing list >>>>> rules-users(a)lists.jboss.org >>>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>>> >>>>> >>>> >>>> >>>> -- >>>> - MyJourney @ http://salaboy.wordpress.com >>>> - Co-Founder @ http://www.jugargentina.org >>>> - Co-Founder @ http://www.jbug.com.ar >>>> >>>> - Salatino "Salaboy" Mauricio - >>>> >>>> >>>> _______________________________________________ >>>> rules-users mailing list >>>> rules-users(a)lists.jboss.org >>>> https://lists.jboss.org/mailman/listinfo/rules-users >>>> >>>> >>> >>> _______________________________________________ >>> rules-users mailing list >>> rules-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/rules-users >>> >>> >> >> >> -- >> - MyJourney @ http://salaboy.wordpress.com >> - Co-Founder @ http://www.jugargentina.org >> - Co-Founder @ http://www.jbug.com.ar >> >> - Salatino "Salaboy" Mauricio - >> >> >> _______________________________________________ >> rules-users mailing list >> rules-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/rules-users >> >> > > _______________________________________________ > rules-users mailing list > rules-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/rules-users > > -- - MyJourney @ http://salaboy.wordpress.com - Co-Founder @ http://www.jugargentina.org - Co-Founder @ http://www.jbug.com.ar - Salatino "Salaboy" Mauricio - _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users