Unable to load dialect 'org.drools.rule.builder.dialect.mvel.MVEL DialectConfiguration:mvel

I am using drools for processing rules. Web-s开发者_如何学运维ervice calls a method in a class which is in jar included in lib directory of web-service. And this method in turn uses drools. Now the problem is web-service is able to find jar that is using drools but not the drools-compiler jar which is residing in same lib directory. And it gives Unable to load dialect 'org.drools.rule.builder.dialect.mvel.MVELDialectConfiguration:mvel' error. It works if I copy all jars in web-service.aar/lib to axis2/WEB_INF/lib. I also tried to set classpath in a way to take web-service.aar/lib jars first then the one's in axis2/WEB_INF/lib by setting classpath in setenv.sh and catalina configurations. But that didn't help either. What can be the reason/solution?

You probably need to add a newer version of the mvel jar. I added the mvel-1.3.3-java1.5.jar and it did the trick for me, but just remember to restart your IDE.