[rules-users] 3.1 M1 "from" keyword

[brad hadfield]

Sure -- here's the stack trace...
 
 org.objectweb.asm.ClassWriter.<init>(I)V
 at
org.mvel.optimizers.impl.asm.ASMAccessorOptimizer.<init>(ASMAccessorOpti
mizer.java:88)
 at
org.mvel.optimizers.OptimizerFactory.<clinit>(OptimizerFactory.java:46)
 at org.mvel.Token.getReducedValueAccelerated(Token.java:302)
 at org.mvel.ExecutableAccessor.getValue(ExecutableAccessor.java:46)
 at org.mvel.MVEL.executeExpression(MVEL.java:173)
 at
org.drools.base.dataproviders.MVELDataProvider.getResults(MVELDataProvid
er.java:43)
 at org.drools.reteoo.FromNode.assertTuple(FromNode.java:61)
 at
org.drools.reteoo.SingleTupleSinkAdapter.createAndPropagateAssertTuple(S
ingleTupleSinkAdapter.java:55)
 at
org.drools.reteoo.LeftInputAdapterNode.assertObject(LeftInputAdapterNode
.java:147)
 at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleOb
jectSinkAdapter.java:20)
 at
org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:163)
 at org.drools.reteoo.Rete.assertObject(Rete.java:121)
 at
org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:196)
 at
org.drools.reteoo.ReteooWorkingMemory.doAssertObject(ReteooWorkingMemory
.java:68)
 at
org.drools.common.AbstractWorkingMemory.assertObject(AbstractWorkingMemo
ry.java:724)
 at
org.drools.common.AbstractWorkingMemory.assertObject(AbstractWorkingMemo
ry.java:543)
 at
test.hxr.TestCompileDrl.testCompileAndExecute(TestCompileDrl.java:91)
 at test.hxr.TestCompileDrl.main(TestCompileDrl.java:40)
[MVEL] Notice: Possible incorrect version of ASM present (3.0 required).
Disabling JIT compiler.  Reflective Optimizer will be used.

This is more of an MVEL question, I guess, but do you know if there is a
way to force the use of reflection over ASM?

Thanks, Brad

  _____  

From: Michael Neale [mailto:michael.neale at gmail.com] 
Sent: Thursday, April 26, 2007 8:11 PM
To: Rules Users List
Subject: Re: [rules-users] 3.1 M1 "from" keyword



should already be done - mvel may be using the wrong one.

Can you tell me what class it is that gives the nosuchmethod? (ie what
the target class is) and we can make sure all references are to inlined
one so this won't happen again. 

Michael.


On 4/27/07, Mark Proctor <mproctor at codehaus.org> wrote: 

   For M2 I'll look at changing the namespace for ASM to avoid this
   issue. Not sure how you'll avoid the issue till then.
   
   Mark
   brad hadfield wrote: 

      
      Hi, I wonder if anyone could help me?
      
      I'm attempting to use the 'from' keyword in  the same fashion as
      the sample found on the Release Notes/Language Improvement wiki.
      The example shows a piece of syntax that uses the 'from' keyword
      to obtain data via a Hibernate query. i.e:
       
        $r : Restaurant( $postCode ) from hbSession.getNamedQuery( "some
      query" ).setProperties( [ key1 : value2, key2 : value ] ).list()
      
      
      I'm having difficulty executing syntax using this keyword because
      Hibernate uses CGlib which relies on ASM 1.5.3 - the 'from'
      keyword seems to rely on MVEL which uses ASM 3.0.
       
      ASM 3.0 is not backwards compatible with ASM 1.5.3 and I get 'no
      such method' errors.
       
      So how does one get the 'from' keyword to work in an environment
      running Hibernate?
       
      Thanks,
      Brad
      
  _____  


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