比较drools规则中HashMap中存在的两个相同的对象值

rule "Compare HashMap Values"
when
    $map: HashMap()
    $value1: String() from $map.values()
    $value2: String(this != $value1) from $map.values()
    eval($value1.equals($value2))
then
    System.out.println("The HashMap contains two identical values: " + $value1);
end

import org.kie.api.KieServices;
import org.kie.api.runtime.KieContainer;
import org.kie.api.runtime.KieSession;

public class DroolsExample {
    public static void main(String[] args) {
        // 创建KieServices实例
        KieServices ks = KieServices.Factory.get();
        
        // 创建KieContainer实例，加载规则
        KieContainer kContainer = ks.getKieClasspathContainer();
        
        // 创建KieSession实例，用于执行规则
        KieSession kSession = kContainer.newKieSession();
        
        // 创建HashMap并插入规则中使用的数据
        HashMap<String, String> map = new HashMap<>();
        map.put("key1", "value1");
        map.put("key2", "value2");
        map.put("key3", "value1");
        kSession.insert(map);
        
        // 执行规则
        kSession.fireAllRules();
        
        // 关闭KieSession
        kSession.dispose();
    }
}