如何在apache ignite中使用递归数据库调用？

// 导入必要的包
import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteCache;
import org.apache.ignite.Ignition;
import org.apache.ignite.cache.CacheAtomicityMode;
import org.apache.ignite.cache.CacheMode;
import org.apache.ignite.cache.query.ScanQuery;
import org.apache.ignite.configuration.CacheConfiguration;

// 创建缓存配置
CacheConfiguration<Integer, Employee> cfg = new CacheConfiguration<>("employees");
cfg.setCacheMode(CacheMode.PARTITIONED);
cfg.setAtomicityMode(CacheAtomicityMode.TRANSACTIONAL);

// 创建Ignite实例并获取缓存
Ignite ignite = Ignition.start();
IgniteCache<Integer, Employee> cache = ignite.getOrCreateCache(cfg);

// 创建Employee类来表示员工数据
public class Employee {
  private int id;
  private String name;
  private int managerId;

  // 构造函数和getters/setters

  // 递归查询方法
  public List<Employee> getSubordinates(int managerId) {
    // 查询直接下级员工
    List<Employee> subordinates = cache.query(new ScanQuery<>((k, v) -> v.getManagerId() == managerId)).getAll();

    // 递归查询下级员工
    for (Employee subordinate : subordinates) {
      List<Employee> descendants = getSubordinates(subordinate.getId());
      subordinates.addAll(descendants);
    }

    return subordinates;
  }
}

// 在应用程序中调用递归查询方法
Employee employee = new Employee();
List<Employee> subordinates = employee.getSubordinates(managerId);