[jboss-jira] [JBoss JIRA] Commented: (JBRULES-1428) ClassCastException when comparing BigDecimal fields
[ http://jira.jboss.com/jira/browse/JBRULES-1428?page=comments#action_12401398 ]
Steve McDowell commented on JBRULES-1428:
-----------------------------------------
I get this problem too. Here is the drools
rule "Under 30s"
when
$person : Person( age < 100 )
then
System.out.println("Person " + $person.getName() + " is under 100");
end
And here is the Java
public class Person {
private BigDecimal age;
public BigDecimal getAge() {return age;}
public void setAge(BigDecimal age) {this.age = age;}
private String name;
public String getName() {return name;}
public void setName(String name) {this.name = name;}
}
ClassCastException when comparing BigDecimal fields
---------------------------------------------------
Key: JBRULES-1428
URL: http://jira.jboss.com/jira/browse/JBRULES-1428
Project: JBoss Drools
Issue Type: Bug
Security Level: Public(Everyone can see)
Affects Versions: 4.0.4
Reporter: Alexandre Gattiker
Works on Drools 4.0.2 but not on Drools 4.0.4.
java.lang.ClassCastException: java.lang.Long
at
org.drools.base.evaluators.BigDecimalFactory$BigDecimalGreaterEvaluator.evaluate(BigDecimalFactory.java:318)
at org.drools.rule.LiteralRestriction.isAllowed(LiteralRestriction.java:61)
at org.drools.rule.LiteralConstraint.isAllowed(LiteralConstraint.java:82)
at org.drools.reteoo.AlphaNode.assertObject(AlphaNode.java:132)
at
org.drools.reteoo.SingleObjectSinkAdapter.propagateAssertObject(SingleObjectSinkAdapter.java:22)
at org.drools.reteoo.ObjectTypeNode.assertObject(ObjectTypeNode.java:153)
at org.drools.reteoo.Rete.assertObject(Rete.java:175)
at org.drools.reteoo.ReteooRuleBase.assertObject(ReteooRuleBase.java:192)
at org.drools.reteoo.ReteooWorkingMemory.doInsert(ReteooWorkingMemory.java:71)
at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:909)
at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:881)
at org.drools.common.AbstractWorkingMemory.insert(AbstractWorkingMemory.java:682)
at com.sample.DroolsTest.main(DroolsTest.java:27)
package com.sample
import com.sample.DroolsTest.Message;
rule "rule1"
when
Message(value > 0)
then
end
public class DroolsTest
{
public static final void main(String[] args)
{
try
{
RuleBase ruleBase = readRule();
Message a = new Message();
a.setValue(new BigDecimal(0));
WorkingMemory workingMemory = ruleBase.newStatefulSession();
workingMemory.insert(a);
workingMemory.fireAllRules();
}
catch (Throwable t)
{
t.printStackTrace();
}
}
private static RuleBase readRule() throws Exception
{
Reader source = new
InputStreamReader(DroolsTest.class.getResourceAsStream("/Sample.drl"));
PackageBuilder builder = new PackageBuilder();
builder.addPackageFromDrl(source);
Package pkg = builder.getPackage();
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
ruleBase.addPackage(pkg);
return ruleBase;
}
public static class Message
{
private BigDecimal value;
public BigDecimal getValue()
{
return this.value;
}
public void setValue(BigDecimal value)
{
this.value = value;
}
}
}
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