当我没有议程组时，我的口水工作正常，但如果我设置焦点，我会收到以下错误：
package drools;
import droolsexec.Message;
import droolsexec.Customer;
rule "Good Bye"
agenda-group "group1"
dialect "java"
when
message: Message( status =="GOODBYE" )
customer: Customer(name == "NEHA")
then
System.out.println( message.getStatus());
end
这是我的规则，我通过以下方式执行它：
public class ExecuteDrools {
private static PackageBuilder pbuilder = new PackageBuilder();
private static StatefulSession sessionObject;
private static RuleBase rbase = RuleBaseFactory.newRuleBase();
public void runDrools(ArrayList list){
initialiseDrools();
initiliseMessageObject(list);
runRules();
}
private void initialiseDrools() {
//1. Read the DRL File and add to package builder
try {
Reader reader = new InputStreamReader(ExecuteDrools.class.getResourceAsStream("/HelloWorld.drl"));
pbuilder.addPackageFromDrl(reader);
} catch (DroolsParserException ex) {
Logger.getLogger(ExecuteDrools.class.getName()).log(Level.SEVERE, null, ex);
} catch (IOException ex) {
Logger.getLogger(ExecuteDrools.class.getName()).log(Level.SEVERE, null, ex);
}
//2. Check for any errors
PackageBuilderErrors errors = pbuilder.getErrors();
if (errors.getErrors().length > 0) {
System.out.println("Some errors exists in packageBuilder");
for (int i = 0; i < errors.getErrors().length; i++) {
System.out.println(errors.getErrors()[i]);
}
throw new IllegalArgumentException("Could not parse knowledge.");
}
//3. Add package to rule base
try {
rbase.addPackage(pbuilder.getPackage());
} catch (Exception e) {
System.out.println("Error: "+ e);
}
}
private void initiliseMessageObject(ArrayList list) {
sessionObject = rbase.newStatefulSession();
Iterator itr = list.iterator();
while(itr.hasNext()){
sessionObject.insert(itr.next());
}
}
private void runRules() {
sessionObject.getAgenda().getAgendaGroup("group2").setFocus();
sessionObject.fireAllRules();
}
}
我收到以下错误：
在 droolsexec.ExecuteDrools.runRules(ExecuteDrools.java:83) 在 droolsexec.ExecuteDrools.runDrools(ExecuteDrools. java:36) 在 droolsexec.MainClass.executeRules(MainClass.java:23) 在 droolsexec.MainClass.main(MainClass.java:9)