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

[Wolfgang Laun]

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> 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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