[rules-users] In drools what is the exact difference between Insert and Update ??

[Bhushan]

Thanks *Davide and laune*  for your all suggestions.Davide u r right all
those are best practices  suggested by client :) .Davide can we discuss
below example .how to rewrite this example using best practices (which is
mention by u and laune in your earlier posts)


Consider Bank Class which contains Account details

Acnt_holder_name
account_no
branch_name


we have some PreDefined exceptions in DB with error code

101-"account holder name can not be blank"
102-"account_no can not be null"
103-"account_no can not be blank"
104-"Wrong branch"

 

Rule "Base-Rule"
Salience 200
lock-on-active true
when 
       $Customer : Bank($account:account)
then
 //Do nothing this is base rule for defining customer
end


rule "madatory-rule-1" extends "Base-Rule"
Salience 190
lock-on-active true
when
       Account(Acnt_holder_name.trim =="")  from $Customer
then
       $Customer.AddNewException(101)
       update($Customer);
end


rule "madatory-rule-2" extends "Base-Rule"
Salience 180
lock-on-active true
when
       Account(account_no ==null)  from $Customer
then
       $Customer.AddNewException(102)
       update($Customer);
end


rule "madatory-rule-3"  extends "Base-Rule"
Salience 170
lock-on-active true
when
       Account(account_no.trim=="")  from $Customer
then
       $Customer.AddNewException(103)
       update($Customer);

end

rule "madatory-rule-4" extends "Base-Rule"
Salience 160
lock-on-active true
when
       Account(branch_name=="mumbai")  from $Customer
then
       $Customer.AddNewException(103)
       update($Customer);

end


rule "madatory-rule-5"
Salience 150
lock-on-active true
when
       $Customer : Bank(exceptionList.size>0)
then
       $Customer.setCustomerValidationSuccess(false)
       drools.halt();   

end


Here I want to avoid salience and update (Like this I am also using lots of
setter methods in my drools project.Now I  am trying to use all these setter
methods without using UPDDATE.But in some cases rules are dependent on other
rules so I dnt have any other choice left .In such cases I am using *update*
keyword so other rules can use updated object fom working memory).



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