如何在 Eclipse IDE 中调试 Drools 文件 (.drl)

Question

I am using drools version : 5.5.0.Final

I have added installed drools plugin following below link: Is there any Drools plugin for Eclipse?

and getting nice colorful DRL file editor and drools perspectives.

But the reason I wanted to install drools plugin was to be able to debug and inspect each rules in drl file which does not work.

Basically below steps here doesnt work : http://docs.jboss.org/drools/release/5.2.0.Final/drools-expert-docs/html/ch08.html#d0e8236

I put the debug point in file and run the application in debug mode but it doesnt stop there.

Can anyone please help me in debuging drl files.

Answer 1

Declare Dialect type as dialect "mvel" in drl file. Debug control will move to break points which you have pointed in the respective drl file.

Answer 2

Another option would be to create a utility class with a debug method:

public class DebugUtils {
    public static boolean debugValue(Object value) {
        return true;
    }
}

Then call this method from any rule passing your value and put a breakpoint in this method. This way you will be able to debug your rule.