[rules-users] RuleAgent in webservice

[ShanzRules]

Hi All,
I am just trying to call the package created in the Guvnor using sample java
class by loading from the properties.
As below : 


   public static final void main(String[] args) {

         	System.out.println("Mainnnnnnnnnn");
         	Properties properties = new Properties();
         	try {
         	    properties.load(new FileInputStream("Guvnor.properties"));
         	} catch (IOException e) {
         	}


 RuleAgent agent = RuleAgent.newRuleAgent(properties);
        
  RuleBase ruleBase = agent.getRuleBase();

            WorkingMemory workingMemory = ruleBase.newStatefulSession();


              GuvnorModel gm=new GuvnorModel();
              gm.setAge(22);
            
            workingMemory.insert(gm);

            workingMemory.fireAllRules();

            for (Iterator i = workingMemory.iterateObjects(); i.hasNext();)
{
                   
System.out.println(i.next().getClass().getCanonicalName());
            }

    
    
    }
//

and got the following error :
RuleAgent(default) EXCEPTION (Sun Apr 04 15:38:12 EDT 2010):
org.drools.rule.DialectRuntimeRegistry; local class incompatible: stream
classdesc serialVersionUID = 5308493362083281112, local class
serialVersionUID = 2297533903900118816. Stack trace should follow.
java.io.InvalidClassException: org.drools.rule.DialectRuntimeRegistry; local
class incompatible: stream classdesc serialVersionUID = 5308493362083281112,
local class serialVersionUID = 2297533903900118816
	at java.io.ObjectStreamClass.initNonProxy(ObjectStreamClass.java:562)
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1583)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1496)
	at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1732)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
	at org.drools.rule.Package.readExternal(Package.java:198)
	at java.io.ObjectInputStream.readExternalData(ObjectInputStream.java:1792)
	at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1751)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
	at
org.drools.core.util.DroolsStreamUtils.streamIn(DroolsStreamUtils.java:189)
	at
org.drools.core.util.DroolsStreamUtils.streamIn(DroolsStreamUtils.java:158)
	at org.drools.agent.HttpClientImpl.fetchPackage(HttpClientImpl.java:50)
	at org.drools.agent.URLScanner.readPackage(URLScanner.java:148)
	at org.drools.agent.URLScanner.getChangeSet(URLScanner.java:120)
	at org.drools.agent.URLScanner.loadPackageChanges(URLScanner.java:96)
	at org.drools.agent.RuleAgent.checkForChanges(RuleAgent.java:410)
	at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:362)
	at org.drools.agent.RuleAgent.configure(RuleAgent.java:347)
	at org.drools.agent.RuleAgent.init(RuleAgent.java:247)
	at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:187)
	at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:147)
	at com.sample.DroolsTest.main(DroolsTest.java:33)
Exception in thread "main" java.lang.NullPointerException
	at org.drools.agent.RuleAgent.refreshRuleBase(RuleAgent.java:363)
	at org.drools.agent.RuleAgent.configure(RuleAgent.java:347)
	at org.drools.agent.RuleAgent.init(RuleAgent.java:247)
	at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:187)
	at org.drools.agent.RuleAgent.newRuleAgent(RuleAgent.java:147)
	at com.sample.DroolsTest.main(DroolsTest.java:33)


--------
Could anyone pls. let me know the solution for the above issue .

Regards,
Shantha


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