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

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 **************** CAUTION - Disclaimer ***************** This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system. ***INFOSYS******** End of Disclaimer ********INFOSYS***