Hibernate version: 3.1

Is there a way to get Hibernate to resolve transient objects to persistent objects when saveOrUpdate is invoked?

Example:

TABLE: user_type
id INT PK
name VARCHAR2(20)

Record: 1, administrator
Record: 2, user

TABLE: user
id INT PK
username VARCHAR2(20)
password VARCHAR2(20)
user_type_id INT FK(user_type.id)

class UserType
{
public Integer id;
public String name;
//setter/getters...
}

class User
{
Integer id;
public String username;
public String password;
public UserType userType;
//setter/getters...
}

class ExampleService
{
Session session; //set arbitrarily

public void test()
{
User user = new User();
user.setUsername("jdoe");
user.setPassword("password");

// I want this transient UserType to be resolved to the persistent UserType with the same 'name' property when session.saveOrUpdate is invoked. Right now saveOrUpdate always creates a new record in the database.
UserType userType = new UserType();
userType.setName("administrator");

user.setUserType(userType);

session.saveOrUpdate(user);
}
}

I Don´t think this is what the hibernate documentation says about saveOrUpdate()




Since your object has no identifier it wil always create a new one
you would have to do a search in your table to see if the user exists....