Hi,

 

PFA newly modified DT and corresponding POJO as you have asked for.

 

CONDITION which we have applied on basic is such that I have to check ‘if value passed to basic  variable is null(i.e. no value has been passed from calling code i.e. main method pasted below). We have written such a CONDITION because we wanted that rule should fire only when some value has been set to basic variable from  calling method and also I have changed data type of basic to Integer as you had asked for.

 

     

Calling program :

 

      public static final void main(String[] args) {

            try {

                  // load up the knowledge base

                  KnowledgeBase kbase = readKnowledgeBase();

                  StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();

                  KnowledgeRuntimeLogger logger = KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");

                  // go !

                  AmountPojo a = new AmountPojo();

                  a.setBasic(1000);

 

                  ksession.insert(a);

                  ksession.fireAllRules();

                  logger.close();

            } catch (Throwable t) {

                  t.printStackTrace();

            }

      }

 

 

 

But,still we are getting  error as ‘a can not be resolved’ and this error is occurring on lines 5(occurrence is 3 times) and 14 (occurrence is 3 times). To my surprise, I found that these rows (i.e. row no.5 and 14) are blank.

 

 

Please suggest some solution for the same

 

Best Regards,

Kripa

 

 

 

 

 

You class looks totally wrong!

What are you using statics? These should all just be instant variables (as you are trying to get a – an instance of AmountProj).

If you want to have nullable values then you can’t use primitives, you need to use the Object forms (java.lang.Double, java.lang.Integer).

 

The syntax of your rules are wrong as well. Your should merge the a: AmountPair across all your condition columns so that you are using the same a.

Your condition expressions are also wrong – you should be using mvel not java style code and you should be using the column value.

This means that your expression should look like “basic == $param” (this would test that the basic salary matches whatever is in the corresponding column.

If you just want the rule to run always as long as basic isn’t null (assuming you’ve done the fixes above) then the simplest way is to have teh expression “basic != $param” and then place null in the column, although I think you need to explain a bit more of what you are trying to achieve as I’m not sure why you are trying to do this in a spreadsheet?

 

Thomas

 

 

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