object cannot be resolved in decision table

[code...@gmail.com]

I have been trying to use Drools 6.0.1 with Spring and am getting an error on the decision table used. I am trying to have 2 objects - one as a Fact and the other as the Result. I can use the "result" in the CONDITION column but am not able to use the same object in the ACTION block. 

CONDITION	CONDITION	CONDITION	CONDITION	ACTION	ACTION
rule:Rule			result:Result
rule.country	rule.state	rule.isNew	result.ans	result.setAns("$param");	rule.setAnsOnRule("$param");

The above is the section from the decision table. In my code, the rules under the 4th column work fine(the result object is present). Also, the last column (second Action above) - is fine too - the Ans on the Rule object is set properly. But the first Action above gives me the error: "Rule Compilation Error" .... "result cannot be resolved."

I don't understand why "result" is resolved in the "condition" but not in the "action". If I remove the first Action column from the decision table, everything works fine.

[Mark Proctor]

I don't think you can use 'rule' as a keyword. Change that and see if thing improve.

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[code...@gmail.com]

Thanks for the reply Mark.

I tried using a different class and object names. Didn't change the result. Here is what I used...

CONDITION

CONDITION

CONDITION

CONDITION

ACTION

ACTION

route:RouteAttribute			resultOfInput:Result
route.country	route.state	route.isNew	resultOfInput.ans	resultOfInput.setAns("$param");	route.setAnsOnRule("$param");

Getting a similar error..  "resultOfInput cannot be resolved"

On Saturday, June 6, 2015 at 12:32:39 AM UTC-7, Mark Proctor wrote:

I don't think you can use 'rule' as a keyword. Change that and see if thing improve.

On Saturday, 6 June 2015, <code...@gmail.com> wrote:

I have been trying to use Drools 6.0.1 with Spring and am getting an error on the decision table used. I am trying to have 2 objects - one as a Fact and the other as the Result. I can use the "result" in the CONDITION column but am not able to use the same object in the ACTION block. 

CONDITION	CONDITION	CONDITION	CONDITION	ACTION	ACTION
rule:Rule			result:Result
rule.country	rule.state	rule.isNew	result.ans	result.setAns("$param");	rule.setAnsOnRule("$param");

The above is the section from the decision table. In my code, the rules under the 4th column work fine(the result object is present). Also, the last column (second Action above) - is fine too - the Ans on the Rule object is set properly. But the first Action above gives me the error: "Rule Compilation Error" .... "result cannot be resolved."

I don't understand why "result" is resolved in the "condition" but not in the "action". If I remove the first Action column from the decision table, everything works fine.

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[Michael Anstis]

Can you include the data rows you have for the headers you show? It could well be a cell has no value for the column binding "resultOfInput" and hence, for that row, it is not available in the RHS.

> Sent when I shouldn't really be working.

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[code...@gmail.com]

Hi Michael, 

I can understand what you mentioned in your post. In my last condition column (second rule/row), I don't have the "ans" populated. I am expecting that value to not be present. In fact, in my actual implementation, I am just expecting the "resultOfInput" to be used in the "Action" and not used on the "condition". Based on your last input, I tried to put a value in the last Action of the second rule below - that made the code run without errors. But, I am not sure why that is mandatory. 

CONDITION

CONDITION

CONDITION

CONDITION

ACTION

ACTION

route:RouteAttribute			resultOfInput:ResultOfInput
route.country	route.state	route.isNewEntry

resultOfInput.ans

resultOfInput.setAns("$param");

route.setAnsOnRule("$param");

country	state	is this new information	answer	answer	answer
US		FALSE	Ans	Ans2	Ans2
US		TRUE		Ans3	Ans3

Thanks for your help.

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[Michael Anstis]

The CONDITION columns do just that; define constraints: if you do not have a value for a row/column the constraint is omitted.

You can achieve a CONDITION column that generates DRL without a constraint e.g. $p:Person() as discussed here: http://drools-moved.46999.n3.nabble.com/Need-help-with-Decision-Table-Conditions-td2195003.html

(See the part talking about "$pgMeta: PageMeta()").

With kind regards,

Mike

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[code...@gmail.com]

Thanks Mike. That helps.

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[sanjay manna]

Thanks It relay help me.