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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