Android Realm 一对多关系、查询

Question

我有两门课:

public class Employee extends RealmObject {
    @PrimaryKey
    long id;
    String name
    Department department;

    //getters setters etc.
}

public class Department extends RealmObject {
    @PrimaryKey
    int id;
    String name;

    //getters setters etc.
}

这是一对多的关系。一个部门可以有多名员工。我尝试提出一些疑问。

realm.where(Employee.class).equalTo("department.name", "deptName").findAll()
realm.where(Department.class).equalTo("employee.name", "empName").findAll()

第一个工作正常，第二个有错误:

无效查询:员工未引用类(class)。

如何使第二个起作用？我是否必须在部门类中创建员工的 RealmList？

我想在此查询中获取具有指定名称的员工的所有部门。

Answer 1

Realm 3.5.0+:

public class Employee extends RealmObject {
    @PrimaryKey
    long id;
    String name
    Department department;

    //getters setters etc.
}

public class Department extends RealmObject {
    @PrimaryKey
    int id;
    String name;

    @LinkingObjects("department")
    private final RealmResults<Employee> employees = null;
    //getters setters etc.
}
realm.where(Employee.class).equalTo("department.name", "deptName").findAll()
realm.where(Department.class).equalTo("employees.name", "empName").findAll()