如何在DROOLS中从一个规则访问一个arraylist到另一个规则

Question

这是作为规则引擎的java文件 RuleRunner.java

public class RuleRunner {
KieSession kSession = null;

public RuleRunner() {
}

/**
 * Method that executes all the rules specified in rule file
 * 
 * @param rules
 * @param facts
 */
public void runRules(String[] rules, String[] values) {

    KieServices kieServices = KieServices.Factory.get();
    KieResources kieResources = kieServices.getResources();
    KieFileSystem kieFileSystem = kieServices.newKieFileSystem();
    KieRepository kieRepository = kieServices.getRepository();

    for (String ruleFile : rules) {
        Resource resource = kieResources.newClassPathResource(ruleFile);
        kieFileSystem.write(
                "src/main/resources/com/skills421/examples/drools6_0/"
                        + ruleFile, resource);
    }

    KieBuilder kb = kieServices.newKieBuilder(kieFileSystem);

    kb.buildAll();
    if (kb.getResults().hasMessages(Level.ERROR)) {
        throw new RuntimeException("Build Errors:\n"
                + kb.getResults().toString());
    }

    KieContainer kContainer = kieServices.newKieContainer(kieRepository
            .getDefaultReleaseId());

    kSession = kContainer.newKieSession();
    for (String value : values){
    kSession.insert(value);
    }
    kSession.fireAllRules();


}

}

这是Main.java，它集成了drl文件和规则引擎

public class Main
{
public static void main(String[] args)
{
    long startTime = System.currentTimeMillis();
    //Creating the rule and specifying the rule file
    RuleRunner runner = new RuleRunner();



    String[] rules = { "test1.drl"};
    String[] values={"creditcard","personal_status","male single"};
    //Object[] facts = { new CreditCard("male single",25,">=7")};


    runner.runRules(rules,values);

    long endTime = System.currentTimeMillis();
    System.out.println("Took "+(endTime - startTime) + " ms"); 
}

}

我是DROOLS的新手。这是我的.drl文件

dialect "mvel"
/*
*This rule picks people with good credit record and an employment history      
of more than 7 years
*/

rule "Credit Card employment and class check"
when 
passList : ArrayList()
$creditCard : CreditCard() from passList
eval($creditCard.get_class() == "good" && $creditCard.getEmployment() ==    
">=7")

then 
passList = new  ArrayList();
passList.add($creditCard);

end  

dialect "java"

rule "passList check"
 when 
  eval( true )
 then
   System.out.println("passList size2....");
end    

我想将passList的计算值从rule1传递给rule2.Any帮助将不胜感激。