[rules-users] Retriving an Object Array in the when clause of a rule.

[Amal Gupta]

Hi All,

Is there a way to retrieve an object array from a Class getter in the when clause of a rule in a drl file ?  I have tried a lot of things but they did not work out.  The Problem is detailed below :-

The following class has a private parameter Column1 which is an Object type array.

public class EightColumnGenericClass {


                  private Object[] Column1;

                  /** Getters and Setters */
                  public Object[] getColumn1() {
                        return Column1;
                  }
                  public void setColumn1(Object[] column1) {
                        Column1 = column1;
                  }
}


Following is the method where I am creating the knowledgebase and utilizing it.  I am reading a file record and splitting the columns. The columns[] array gets saved into the attribute of the class defined above.

      public static void fnReadFromFile(String FilePath, String FileName){

                  /* Declarations and other code */

while ((str = brReadFromFile.readLine())!=null){

                        Columns = str.split(",");

                        ecgcPLC = new EightColumnGenericClass();
                        ecgcPLC.setColumn1(Columns);

                  ksession.insert(ecgcPLC);

                  }

                  ksession.fireAllRules();
}

I have to try and retrieve each cell of the Columns[] array in the entire collection and apply rules on individual cell.   My drl file is given below.

rule "SourceSystemId = value"

    when

            c: EightColumnGenericClass()
            Object[] columns: c.getColumn1();
            for (Object o : columns)
            {
                  System.out.println(o.toString());
# The condition I want here is - if (o.toString()=="1794")
            }
    then

        #RHS Code
end

Is there a way to achieve this?  Or is there something missing with my DRL file?  Please assist.

Thanks in Advance,
Amal


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