[rules-users] Problem with DSL in Drools 4.0.3

[tansey]

I finally figured out the problem.  I didn't know that you couldn't mix mvel
and a DSL in a rule.  So by following those 8 steps, essentially that's what
was happening.





tansey wrote:
> 
> I've tried this in clean installs of different versions of eclipse and
> it's still not recognizing it, so I must be missing a step.  The following
> is what I did:
> 
> 1. File -> New -> Drools -> Rule Project -> Finish
> 2. Added new Domail Specific Language named mylang.dsl to the source
> folder src/main/rules
> 3. Removed all of the template rules except the Log one
> 4. Added "expander mylang.dsl" after import statement in Sample.drl
> 5. Uncommented line 45 (Reader dsl = ...) in DroolsTest.java
> 6. Commented out line 54: builder.addPackageFromDrl( source );
> 7. Uncommented line 57: builder.addPackageFromDrl( source, dsl );
> 8. Right-clicked on DroolsTest.java -> Run As -> Java Application
> 
> The program throws an exception saying it is unable to expand several
> lines. Did I do something wrong? If not, do these steps work for anyone
> else?
> 

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