This error is caused by a mismatch between the version of the mvel library
you are using and the version that is expected by drools.
Drools 4.0.0 is expecting mvel14-1.2rc1.jar. Previous versions of drools
are probably based on older versions of mvel.
Might also be caused by having multiple versions of mvel in your classpath.
Kris
----- Original Message -----
From: "hypnosat7" <ablarbi(a)yahoo.fr>
To: <rules-users(a)lists.jboss.org>
Sent: Friday, July 27, 2007 5:30 PM
Subject: Re: [rules-users] adding process to an empty rule base
I try this:
...
InputStream stream =
getClass().getResourceAsStream("/rules/demoRuleFlow.rfm");
Reader ruleFlowReader = new InputStreamReader(stream);
ruleEngine.setRuleFlow(ruleFlowReader);
..
PackageBuilder builder = new PackageBuilder();
builder.addRuleFlow(ruleFlow);
Package pkgRuleFlow = builder.getPackage();
ruleBase.addPackage(pkgRuleFlow);
but I have this error:
Caused by: java.lang.NoSuchMethodError:
org.mvel.optimizers.OptimizerFactory.setDefaultOptimizer(Ljava/lang/String;)V
at
org.drools.rule.builder.dialect.mvel.MVELDialect.init(MVELDialect.java:132)
at org.drools.compiler.DialectRegistry.initAll(DialectRegistry.java:49)
at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:139)
at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:88)
Kris Verlaenen wrote:
>
> Yes, that is possible, but you should also add the (generated) package of
> your PackageBuilder.
>
> But this process is actually much simpler when using the ProcessBuilder
> exclusively.
> It should look something like this:
>
> PackageBuilder builder = new PackageBuilder();
> // add your rules (if any)
> builder.addPackageFromDrl( ... );
> // add your processes (if any)
> builder.addRuleFlow( ... );
> // add Package to ruleBase
> Package pkg = builder.getPackage(); // this includes all the rules and
> processes
> ruleBase.addPackage( pkg );
>
> Kris
>
> ----- Original Message -----
> From: "hypnosat7" <ablarbi(a)yahoo.fr>
> To: <rules-users(a)lists.jboss.org>
> Sent: Friday, July 27, 2007 3:59 PM
> Subject: [rules-users] adding process to an empty rule base
>
>
>>
>> Is it possible to set the rule flow in my rule base before adding rule
>> packages :
>>
>> ruleBase = RuleBaseFactory.newRuleBase();
>> org.drools.compiler.ProcessBuilder processBuilder = new
>> ProcessBuilder(new
>> PackageBuilder());
>> processBuilder.addProcessFromFile(ruleFlow);
>> ruleBase.addProcess(processBuilder.getProcesses()[0]);
>>
>> thanks
>> --
>> View this message in context:
>>
http://www.nabble.com/adding-process-to-an-empty-rule-base-tf4157978.html...
>> Sent from the drools - user mailing list archive at
Nabble.com.
>>
>> _______________________________________________
>> 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
>
>
--
View this message in context:
http://www.nabble.com/adding-process-to-an-empty-rule-base-tf4157978.html...
Sent from the drools - user mailing list archive at
Nabble.com.
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