Re: [rules-users] [rules user] different behavior on double type
A Java double literal: 99.9 is a double that does not represent the real
number 99.9 exactly. The Java String literal "99.9" is the accurate
decimal notation of the real number 99.9.
Conversions from 99.9+/-epsilon to a BigDecimal aren't likely to
produce a value that represent the real number 99.9 exactly - unless
you use a constructor with a MathContext defining the precision for
rounding.
Avoid mixing double and BigDecimal.
-W
On 05/04/2012, Zeke <xanadu860122(a)gmail.com> wrote:
Thanks for all your replies. I'm sorry for bring up this issue
again. I
tried the Drools 5.3.0.Final. For float and double type, I think current
behavior is what I need. But for BigDecimal type, when my condition is "bd
== 99.9" ("bd" equals new BigDecimal("99.9")), the condition is
false. But
if I add quotes to the literal as bd == "99.9", the condition will be true.
Is this behavior is designed to be so? It seems 99.9 will be considered as
double value, while "99.9" will be considered as a BigDecimal value.
Thanks!