Drools Collection Effiency - drools

Question

I have 2 collections of the same type and each object in the collection is key by an id. My goal is to find the same object in both collections and then compare a field against each other. If they are not the same field then store the differences.
My issue is performance, for every rule I re-scan the collection for the same object. Is there a way if the object matches then run all field validations instead of finding the item in the collection multiple times?
Fact Code:
public class ReconcilerFact
{
private List<Security> securitySystem1;
private List<Security> securitySystem2;
public ReconcilerFact(List<Security> securities1, List<Security> securities2)
{
this.securitySystem1 = securities1;
this.securitySystem2 = securities2;
}
public List<Security> getSecuritySystem1()
{
return securitySystem1;
}
public List<Security> getSecuritySystem2()
{
return securitySystem2;
}
}
Drools Code:
rule "ISIN Rule"
no-loop
when
## conditions
##
$recon : ReconcilerFact()
$security1 : Security() from $recon.securitySystem1
$security2 : Security(sSecId == $security1.sSecId, sISIN != $security1.sISIN) from $recon.securitySystem2
then
## For the valid condition
##
result.add($security1, SecurityFields.ISIN, $security1.getsISIN(), $security2.getsISIN());
end
rule "Cusip Rule"
no-loop
when
## conditions
##
$recon : ReconcilerFact()
$security1 : Security() from $recon.securitySystem1
$security2 : Security(sSecId == $security1.sSecId, sCusip != $security1.sCusip) from $recon.securitySystem2
then
## For the valid condition
##
result.add($security1, SecurityFields.CUSIP, $security1.getsCusip(), $security2.getsCusip());
end
rule "Sedol Rule"
no-loop
when
## conditions
##
$recon : ReconcilerFact()
$security1 : Security() from $recon.securitySystem1
$security2 : Security(sSecId == $security1.sSecId, sSedol != $security1.sSedol) from $recon.securitySystem2
then
## For the valid condition
##
result.add($security1, SecurityFields.SEDOL, $security1.getsSedol(), $security2.getsSedol());
end

Answer 1

Instead of using the from Conditional Element you can just insert all the security objects and tag them with a Group field. So you will end up having:
$s1: Security(group == "Group1")
$s2: Security(group == "Group2", sSecId == $security1.sSecId)
That will treat each security as a fact and if you modify one single instance, only that instance will be reevaluated.
Cheers