[rules-users] Reg: Writing complex rules in Grided editor

bas karan ibasas at yahoo.co.in
Tue Nov 10 04:33:40 EST 2009


Hi,
 
       I am new to Drools rules. Can any one of you tell me how can we write complex rules like below using Grided editor.
 
rule sequenceOfIncreasingWithdrawals
  when
    $account:Account($number : number)
    $t1:TransactionCreatedEvent(fromAccountNumber == $number)
      from entry-point TransactionStream    
    $t2:TransactionCreatedEvent(amount > $t1.amount, 
      fromAccountNumber == $number, this after[0, 3m] $t1)
      from entry-point TransactionStream
    not (TransactionCreatedEvent(fromAccountNumber == $number,
      this after $t1, this before $t2 ) 
      from entry-point TransactionStream)
    $t3:TransactionCreatedEvent(amount > $t2.amount, 
      fromAccountNumber == $number, this after[0, 3m] $t2 )
      from entry-point TransactionStream
    not (TransactionCreatedEvent(fromAccountNumber == $number,
      this after $t2, this before $t3 ) 
      from entry-point TransactionStream)
    $ai : AccountInfo(number == $number, eval($t1.amount.add(
      $t2.amount).add($t3.amount).compareTo(BigDecimal.
      valueOf(0.90).multiply(averageBalance)) > 0))
  then
    insert(new SuspiciousAccount($number, 
      SuspiciousAccountSeverity.MAJOR));
    insert(new SuspiciousTransaction($t1.transactionUuid, 
      SuspiciousTransactionSeverity.MAJOR));
    insert(new SuspiciousTransaction($t2.transactionUuid, 
      SuspiciousTransactionSeverity.MAJOR));
    insert(new SuspiciousTransaction($t3.transactionUuid, 
      SuspiciousTransactionSeverity.MAJOR));
end
 
 
Thanks
Baskaran S


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