[rules-users] Firing the rules in a sequence for all the items in an ArrayList.

[Amal Gupta]

Hi Wolfgang,



Thanks for your response.



Here is the rule that I had written for the file.


rule "Id != value"

    when
        plc : DailyPLC(Id!="1794");
    then
        System.out.println("Incorrect ID " + plc.getId()+ " at row : " + plc.getRowNumber());
end



Any pointers shall be really very helpful.



Regards,

Amal



-----Original Message-----
From: rules-users-bounces at lists.jboss.org [mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Wolfgang Laun
Sent: Tuesday, June 12, 2012 3:57 PM
To: Rules Users List
Subject: Re: [rules-users] Firing the rules in a sequence for all the items in an ArrayList.



Your question can't be answered without the rules. - If your Java code does what you say it does, then it should be OK.

-W





On 12/06/2012, Amal Gupta <Amal_Gupta at infosys.com<mailto:Amal_Gupta at infosys.com>> wrote:

> Hello,

>

> I am new to Java and Drools and have a doubt regarding the sequence of

> rules' execution as stated below :-

>

> Scenario:- I have a scenario wherein I have to apply multiple rules on

> multiple columns coming in a file. To simulate that I created a 2-D

> array as follows

>

> String[][] data =  {

>                         {"1791","8459625","78458745","20120610","20120610"

> },

>                         {"1792","8459623","78458745","20120610","20120610"

> },

>                         {"1793","8459624","78458745","20120610","20120610"

> },

>

> {"17944","8459626","78458745","20120610","20120610"}

>                   };

>

> Here each column of corresponds to a member for the following class

>

> public class DailyPLC {

>

>       private String Id;    // This value will correspond to data[i][0]

>       private String productCode; // This value will correspond to

> data[i][1]

>       private String customerCode; // This value will correspond to

> data[i][2]

>       private String date1; // This value will correspond to data[i][3]

>       private String date2; // This value will correspond to

> data[i][4]

>

>       private int rowNumber; // The row number to keep a track of row

> for which the record exists

>

>       /*Getters and Setters defined for each of them*/ }

>

> I have to perform checks on each of the columns, and the intent is to

> create all the rules that I need for the entire array and save it in a

> single drl file. Also, at the execution time, all the rules should be

> applied - either at once or sequentially - to all the rows of the data.

>

> Approach:-  I tried the following

>

> 1.       Created an ArrayList

>

> ArrayList<DailyPLC> alPLCArrayList = new ArrayList<DailyPLC>();

>

>

>

> 2.       Iterated over the data and stored each row into a field of the

> object of DailyPLC class.

>

> 3.       For every iteration, added the object into the array list.

>

>

>

> alPLCArrayList.add(plcToday);  // The plcToday is the object of the

> DailyPLC class

>

>

>

> 4.       When executing the rules, I am adding all the items of the

> ArrayList one by one and adding into the Knowledge Session.

>

>

>

> for(DailyPLC d : alPLCArrayList)

>

>             {

>

>            ksession.insert(d);

>

>             }

>

>

>

> Problem Faced :- The problem that I faced is that when I do

> FireAllRules, the rule only validates the last record. The intent is

> that it should traverse the list and give a result for all the members of the list.

> Have I missed something here?

>

> Please assist.  Let me know in case you need any more information

>

> Thanks in Advance,

> Amal Gupta

>

>

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