Drools comparing objects in working memory - drools

Question

I am trying to accumulate similar objects in working memory and set actions based on object attributes. My Rule: 3 or more procedures done on the same date for a patient by the same provider. Condition: Same date of service and same provider ID Action: 100% for 1st procedure, 50% for 2nd procedure and 25% for remaining. Each line item contains details about the procedure.
My Model object:
public class LineItem {
private Date dateOfService;
private String procedureCode;
private String providerID;
private double billedAmount;
private double allowableAmount;
//getters and setters
}
Drools Rule:
**rule "Multiple Procedures done on the same day by Same Provider"**
lock-on-active true
when
$lineItem1 : LineLevelData ( $dateOfService : dateOfService , $providerId : providerId, reasonCode == null, $lineNumber : lineNumber )
and
$lineItem2 : LineLevelData ( lineNumber!= $lineNumber , dateOfService == $dateOfService , providerId == $providerId, reasonCode == null )
and
accumulate( $lineItem: LineLevelData( dateOfService == $dateOfService , providerId == $providerId, reasonCode == null );
$list: collectList( $lineItem ) )
then
System.out.println("List size: " + $list.size () );
for ( int i = 0; i < $list.size(); i++ ){
LineLevelData lineItem = (LineLevelData)$list.get(i);
if(i == 0){
modify(lineItem){ setReimbursementAmount(0.8* ( lineItem.getBilledAmount() ) )
};
System.out.println("Line Number: " + lineItem.getLineNumber() );
}
else if(i == 1){
modify(lineItem) { setReimbursementAmount(0.5* (lineItem.getBilledAmount() ) )
};
System.out.println("Line Number: " + lineItem.getLineNumber() );
}
else {
modify(lineItem ){ setReimbursementAmount(0.25* (lineItem.getBilledAmount() ) )
};
System.out.println("Line Number: " + lineItem.getLineNumber() );
}
}
Java code:
LineLevelData line1Item = new LineLevelData();
line1Item.setLineNumber(1);
line1Item.setProcedureCode("99201");
line1Item.setDateOfService(new GregorianCalendar(2017, 9, 15).getTime());
line1Item.setBilledAmount(1000);
line1Item.setProviderId("670112");
billLineItems.add(line1Item);
LineLevelData line2Item = new LineLevelData();
line2Item.setLineNumber(2);
line2Item.setProcedureCode("99205");
**line2Item.setDateOfService(new GregorianCalendar(2017, 8, 20).getTime());
line2Item.setProviderId("670118");**
line2Item.setBilledAmount(1500);
billLineItems.add(line2Item);
LineLevelData line3Item = new LineLevelData();
line3Item.setLineNumber(3);
line3Item.setProcedureCode("99049");
**line3Item.setDateOfService(new GregorianCalendar(2017, 8, 20).getTime());
line3Item.setProviderId("670118");**
line3Item.setBilledAmount(1000);
billLineItems.add(line3Item);
LineLevelData line4Item = new LineLevelData();
line4Item.setLineNumber(4);
line4Item.setProcedureCode("99058");
**line4Item.setDateOfService(new GregorianCalendar(2017, 8, 20).getTime());**
line4Item.setBilledAmount(520);
**line4Item.setProviderId("670118");**
billLineItems.add(line4Item);
//Inserting facts in working memory
for(LineLevelData billLineItem : buildBillLineItems()){
kSession.insert(billLineItem);
log.info("Inserted Line Item : " + billLineItem.getLineNumber());
}
int rulesFired = kSession.fireAllRules(new RuleNameEqualsAgendaFilter("Multiple Procedures done on the same day by Same Provider"));
According to my test above line items with line number 2 , 3 and 4 should be updated. Instead I am getting line number 1, 3 and 4.
Rule Output:
List size: 3
Line Number: 4
Line Number: 3
Line Number: 1
Multiple Procedures rule is fired...Wed Sep 20 00:00:00 CDT 2017
===========Rule Fired============ : MULTIPLE PROCEDURES DONE ON THE SAME DAY BY SAME PROVIDER
No. of Rules fired: 1
Line Item Number: 1
Billed amount: 1500.0
Reimbursable amount: 375.0
Reason Code: CHI
Message: Coverage for all subsequent procedures is 25%
Line Item Number: 4
Billed amount: 520.0
Reimbursable amount: 416.0
Reason Code: NR
Message: Submit to Nurse Review. 100% of UCR at 80th percentile.
Line Item Number: 3
Billed amount: 1000.0
Reimbursable amount: 500.0
Reason Code: PHY
Message: Manual review is required. 50% coverage for secondary procedure.
**Line Item Number: 2
Billed amount: 1000.0
Reimbursable amount: 0.0
Reason Code: null
Message: null**