I just came across this the other day, when I was importing rules generated by a lookup table. I wasn't able to fully resolved it, but I had partially resolved it by formatting the cells to have a decimal point. ________________________________________ From: rules-users-bounces(a)lists.jboss.org [rules-users-bounces(a)lists.jboss.org] On Behalf Of ST [super_thunder2(a)hotmail.com] Sent: Wednesday, March 26, 2008 3:44 PM To: rules-users(a)lists.jboss.org Subject: [rules-users] BigDecimal is Int or Long? Hi, There is a situation where BigDecimal is returned from a function. But when this BigDecimal is included as one of the conditions in a rule. I get a ClassCastException about trying to cast to Integer. Below is an example that reproduces this error. Is this an expected behavior? If so, is there any way to avoid the error? package com.sample import java.math.BigDecimal rule "init1" salience 1000 when num : BigDecimal() from getBigDecimal("1") then System.out.println(num.compareTo(new BigDecimal("0"))); end function BigDecimal getBigDecimal(String value) { return new BigDecimal(value); } _______________________________________________ rules-users mailing list rules-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users

I personally wouldn't recommend accumulate's or mvel functions for financial data in drools 4.0.5. Just try this code: java.math.BigDecimal a = new java.math.BigDecimal("45.1"); java.math.BigDecimal b = new java.math.BigDecimal("40.0"); double c = a.doubleValue() - b.doubleValue(); return new java.math.BigDecimal(c); (java.math.BigDecimal) 5.10000000000000142108547152020037174224853515625 More info at: http://jira.jboss.org/jira/browse/JBRULES-1322 With kind regards, Geoffrey De Smet Mark Proctor schreef: