hi,guys

I have two class that have mang-to-one relationship.
I have an Object Department(1) Linked to another Object Employee(2),

Source Department:
<class name="test.Department" table="department">
<id name="id" type="string" unsaved-value="any">
<column name="id" sql-type="varchar(32)" not-null="true"/>
<generator class="assigned"/>
</id>
<property name="name" type="string" update="true" insert="true">
<column name="name" sql-type="varchar(150)" not-null="false"/>
</property>
<property name="fatherId" type="string" update="true" insert="true">
<column name="father_id" sql-type="varchar(32)" not-null="false"/>
</property>
<set name="employee" lazy="true" inverse="true" cascade="all">
<key column="id"/>
<one-to-many class="test.Employee"/>
</set>

Source Employee:
<class name="test.Employee" table="employee">
<id name="id" type="string" unsaved-value="any">
<column name="id" sql-type="varchar(32)" not-null="true"/>
<generator class="assigned"/>
</id>
<property name="name" type="string" update="true" insert="true">
<column name="name" sql-type="varchar(80)" not-null="false"/>
</property>
<property name="password" type="string" update="true" insert="true">
<column name="password" sql-type="varchar(30)" not-null="false"/>
</property>
<many-to-one name="department" class="test.Department" >
<column name="id" sql-type="varchar(32)" not-null="true"/>
</many-to-one>
</class>


....
Employee employee=new Employee();
employee.setId("0001");
employee.setName("test1");
employee.setPassword("111");

Department dp=new Department();
dp.setId("dp1");
dp.setName("software design");
Set employeeSet=new HashSet();
employeeSet.add(employee);
dp.setEmployee(employeeSet);
....
session.save(dp);
....
sucess!

but when i...

Department department=new Department();
department.setId("dp1");

Employee employee=new Employee();
employee.setId("0002");
employee.setName("test2");
employee.setPassword("111");
employee.setDepartment(department);

....
session.save(employee);
....


it reports:
net.sf.hibernate.PropertyValueException: not-null property references a null or transient value: test.Employee.department


please tell me how to do this


thanks
Feeler
[/b]

You haven't saved the department, so Hibernate considers it a transient object. Also, you probably want to add the employee to the department's set of employees.

thanks
but i don't want to save a new department,
i only want to save a new employee to the department's set of employees.
i really don't know how to do this
can you tell me?

I would suggest you add the employee to the department's collection of employees, then update() the department. You shouldn't need to save() the employee as your cascade would cover saving the employee.

HTH

Craig

thank a lot!!!!!!!!!!
i've been beeting this problem for two days you save me!