These questions are answered in the Drools Expert documentation. Look for subsection headers "Bound Variable Restriction" and "Return Value Restriction". <br><br>-W<br><br><br><div class="gmail_quote">On 27 January 2011 02:13, garySFCA844 <span dir="ltr"><<a href="mailto:gs999zzz@yahoo.com">gs999zzz@yahoo.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><br>
hello,<br>
<br>
I'm a newbie to Drools. I'm trying to write a rule that performs some math,<br>
without resorting to a function or eval. I searched the forum but found lots<br>
of posts on nested function calls,etc but not what I was searching for.<br>
<br>
For simplicity, lets assume I have the following classes<br>
<br>
public class ONE{<br>
double A<br>
double B<br>
double C<br>
}<br>
<br>
public class TWO{<br>
double D<br>
double E<br>
}<br>
<br>
where A, B, C, D, E are themselves calculated values (apr, price at some<br>
date, etc)<br>
<br>
1. What does the LHS of a rule that compares A > D look like?<br>
<br>
2. What does the LHS of a rule that compares A+B > C look like?<br>
<br>
3. What does the LHS of a rule that compares A+D > C look like?<br>
<br>
<br>
I apologize in advance if this was covered already.<br>
<br>
Thanks.<br>
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