Dividing BigDecimal in rules can result in an ArithmeticException

Issue

• Big decimals are passed into the Drools rule engine and rules will be run on those values. When the rule evaluates those values with a division it can return an exception when the division results in an infinitely recurring decimal (for example 1 / 3). Shouldn't engine in situations like this round the decimal such that an error is not thrown and the application can continue?

The example looks like following:

Data Model:

public static class BigDecimalWrapper {

        private BigDecimal first;
        private BigDecimal second;
}

Code which interacts with the engine:

BigDecimalWrapper wrapper = new BigDecimalWrapper();
wrapper.setFirst(new BigDecimal(1));
wrapper.setSecond(new BigDecimal(3));
kSession.insert(wrapper);
kSession.fireAllRules();

Rule:

rule "FindIt"
when
BigDecimalWrapper(first.divide(second).equals(null))
then
System.out.println("fired ");   
end

The code above produces:

Caused by: java.lang.ArithmeticException: Non-terminating decimal expansion; no exact representable decimal result.

when 'divide' operation is executed.