[rules-users] java.lang.ClassCastException error

[kissro at lidp.com]

I have created a .drl file that contains the following rule:

rule "Underwriting Rule 1"
        dialect "mvel"
    when
            p : Policy( premium < "50.00" )
    then
            p.setStatus( 32 );
end

The code below processes the rule:

   public void main(Policy inputPolicy) throws Exception
   {
       RuleBase ruleBase = buildPackage();

       StatefulSession session = ruleBase.newStatefulSession();

       session.insert(inputPolicy);
       session.fireAllRules();
   }

    private RuleBase buildPackage () throws IOException, Exception
    {
        final PackageBuilder builder = new PackageBuilder();
        builder.addPackageFromDrl( new InputStreamReader(
              UnderwritingRule.class.getResourceAsStream(
                                        "/underwriting.drl" ) ) );

        final RuleBase ruleBase = RuleBaseFactory.newRuleBase();
        ruleBase.addPackage( builder.getPackage() );

        return ruleBase;
    }

The code and rule above process just fine, without any errors.

Using the BRMS web interface, I've created a rule and compiled it into a
package.  The rule created via BRMS looks like this:

rule "Underwriting Rule 1"
        dialect "mvel"
    when
           p : Policy( premium < "50.00" )
    then
           p.setStatus( 32 );
end

I've deployed the rule package and the code below processes it:

   public void main(Policy inputPolicy) throws Exception
   {
        RuleBase ruleBase = loadRuleBase();

        StatefulSession session = ruleBase.newStatefulSession();

        session.insert(inputPolicy);
        session.fireAllRules();
   }

   private RuleBase loadRuleBase() throws IOException, Exception
   {
        RuleAgent.newRuleAgent("/brmsunderwritingrules.properties");
        RuleBase ruleBase = agent.getRuleBase();

        return ruleBase;
   }

Now, when I run the above code, I get an error - 
ERROR [STDERR] RuleAgent(default) INFO Configuring with
               newInstance=true, secondsToRefresh=30
ERROR [STDERR] RuleAgent(default) INFO Configuring package provider :
               DirectoryScanner scanning dir: \deployed\rules found 1
               file(s).
INFO  [STDOUT] Error - java.lang.ClassCastException: java.util.HashSet

In the 2nd sample of code, I'm using a rule package and am using the
RuleAgent to load the rule base but I don't know why I getting the
java.lang.ClassCastException error.  Does anyone know why?

Rod