Problem :Regarding Fetch groups in OpenJPA.
public class EmployeePK {
@Column(name = "EmployeeID", nullable = false)
private long employeeID;
@Column(name = "SerialNo", nullable = false)
private int serialNo;
}
public class Employee {
@EmbeddedId
protected EmployeePK employeePK;
private String firstName;
private String lastName;
@ManyToOne private Department dept;
}
public class Department {
@Id private int id;
private String departmentName;
}
This is the sample scenario.
There are 3 entity classes, one is the primary key class.
Here normally if i am not using fetch group feature in OpenJPA, during
retrieval all fields will retrieved from employee and department tables.
But i need some fields from both the tables to be fetched first.
By seeing fetch group documentation, i couldnt get a full idea of how to
configure fetch groups for related entities.
So please give a sample configuration for the above scenario.
