nested object from accumulate

[vijay yadav]

following is the rule



import java.lang.Integer;
rule "testrule"
    dialect "mvel"
    lock-on-active false
    when
        $app: App(pl==null)
        $acdata: ACData($enq: enquiry)
        $total: Integer() from accumulate(
            Enquiry(
                e_purpose == "pl"
            ) from $enq,
            init(Integer count = 0;),
            action(count +=1;),
            reverse(),
            result(count)
        )
    then
          modify( $app ) {
                setPl( $total )
          }
    end

and following is json request.

{
"insert":{
"object":{
"com.redhat.loandemo.ACData":{
   "enquiry":{
            "e_purpose": "pl"
       }
  }
 }
 }
},

when this rule gets fired, value of pl comes out to be 2. while it should be 1.
Would anyone please help me what's going wrong.


Regards
Vijay

[Mario Fusco]

Hi,

I don't know what's going on there (I'd need a complete reproducer to investigate) but my suggestion is to use the count() accumulate function instead of implementing your own count. One of the problem with your implementation is that you're leaving the reverse() function empty where clearly it should be reverse( count -= 1; ).

Regards,

Mario

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[adarsh6...@gmail.com]

Hi Mario,

Is this possible to implement the above drl file in guided decision table on workbench ??

or My Question is simple can we represent any drl file as guided decision table ??

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[Michael Anstis]

You can use any DRL in a Guided Decision Table; although we encourage use of the more guided approaches.

To use any DRL add a BRL Condition (Advanced Column type) and then a Free Form Line.

Entry your DRL text. Place holders for "variables" (cells in the table) can be specified with the "Rule Template" syntax i.e. @{key}.

For example: Person( age > @{age} ) 

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[vijay yadav]

I have two classes named "ACData" and "Enquiry".

ACData has a field named "enquiry" of type "Enquiry".

Class Enquiry has two fields e_purpose and e_date.

Now I want to get total number of enquiry with e_purpose=="pl".
for example

{
"insert":{
"object":{
"com.redhat.loandemo.ACData":{
   "enquiry":{
            "e_purpose": "pl",

            "e_date": "1990-11-11"
       },

   "enquiry":{
            "e_purpose": "hl",
            "e_date": "1991-11-11"
       },

   "enquiry":{
            "e_purpose": "pl",
            "e_date": "1990-12-21"
       }
  }
 }
 }
},


This should return 2. Would you please tell me how can I write a rule to get this?

Regards
vijay

On Thursday, August 31, 2017 at 12:10:24 PM UTC+5:30, Mario Fusco wrote:

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[vijay yadav]

Sorry, I was doing something wrong.

following is json request.

{"com.redhat.loandemo.ACData":{
  "enquiry" : [ 
             {
               "e_date" : null,
               "e_purpose" : "pl",

             },
             {
               "e_date" : null,
               "e_purpose" : "pl",

             },
             {
               "e_date" : null,
               "e_purpose" : "al",

             }
          ] 
}}

I need to get total number of entries in list "enquiry" where e_purpose=="pl".
would anyone please tell me how can I do it using guided rule?

Regards