Hi All,

 

I've recently started using Drools and Guvnor, and so far really like it!

 

I have one problem however, to do with Java enums in Guvnor.

 

I have a simple enum as follows:

public enum STPRuleAction
{
    UNKNOWN, ACCEPT, REJECT
}

I can hand write a rule that works fine with this enum as follows:

rule "Retract rejected"
    dialect "mvel"
    when
         o : CtasOrder( stpRuleAction == STPRuleAction.REJECT )
    then
         o.setStatus( 1 );
        retract( o );
end

However, if I create a rule with Guvnor, it always puts quotes around the condition, so seems to treat it as a string and it is never triggered. I have created a Guvnor enumeration as follows:

 

'CtasOrder.stpRuleAction' : ['STPRuleAction.UNKNOWN=UNKNOWN', 'STPRuleAction.ACCEPT=ACCEPT', 'STPRuleAction.REJECT=REJECT']

 

Which gives me the correct drop down values in the Business Rule editor, but the source of the rule looks like:

rule "Retract rejected"
    dialect "mvel"
    when
         o : CtasOrder( stpRuleAction == "STPRuleAction.REJECT")
    then
         o.setStatus( 1 );
        retract( o );
end

I've tried without the mapping in the enumeration (e.g ... : ['STPRuleAction.UNKNOWN', ...) and even removing the enumeration and adding the text manually as a literal value. I can't see any way to specfy a enum/qualifiedIdentifier as a condition in Guvnor. It works fine as a consequence and produces a rule without quotes around (e.g. o.setStpRuleAction( STPRuleAction.REJECT )...)

 

Many thanks for any assistance you can give.

Regards,

Ian

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