In JPA 2.0+ you can use @JoinColumn as a way to avoid to generate joined table. Try it. @OneToMany @JoinColumn(name=”COLUMN_NAME”) UPDATE The info provided above has been extracted from EJB 3.0 o’reilly book (Look for The @JoinColumn annotation references the CUSTOMER_ID column in the PHONE table). However, plain JPA 1.0 specification does not support this … Read more
Eloquent’s push() saves the model and its relationships, but first you have to tell what you want to be involved in the relationsship. Since your user-model/table holds the id of the dealership, I assume that a user can belong to only one dealership, so the relationship should look like this: User Model: public function dealership() … Read more
I am not really sure about your question (the meaning of “empty table” etc, or how mappedBy and JoinColumn were not working). I think you were trying to do a bi-directional relationships. First, you need to decide which side “owns” the relationship. Hibernate is going to setup the relationship base on that side. For example, … Read more
This question is thoroughly explained on Hibernate FAQ: First, you need to understand SQL and how OUTER JOINs work in SQL. If you do not fully understand and comprehend outer joins in SQL, do not continue reading this FAQ item but consult a SQL manual or tutorial. Otherwise you will not understand the following explanation … Read more
The solution is to do exactly what the exception message tells you: Caused by: org.hibernate.ObjectDeletedException: deleted object would be re-saved by cascade (remove deleted object from associations) Remove the deleted object from an associations (sets, lists, or maps) that it is in. In particular, i suspect, from PlayList.PlaylistadMaps. It’s not enough to just delete the … Read more
As Matthieu says, the only case where you wouldn’t want to set inverse = true is where it does not make sense for the child to be responsible for updating itself, such as in the case where the child has no knowledge of its parent. Lets try a real world, and not at all contrived … Read more
the problem is this: post = Post(body=form.body.data, timestamp=datetime.utcnow(), thread=thread.id, author=g.user.id) you want to work with ORM objects, not primary key columns: post = Post(body=form.body.data, timestamp=datetime.utcnow(), thread=thread, author=g.user) the error means that an integer is being interpreted as an ORM object.
You have to set the associatedEmployee on the Vehicle before persisting the Employee. Employee newEmployee = new Employee(“matt”); vehicle1.setAssociatedEmployee(newEmployee); vehicles.add(vehicle1); newEmployee.setVehicles(vehicles); Employee savedEmployee = employeeDao.persistOrMerge(newEmployee);
Suppose you have an Order and an OrderLine. You can choose to have a unidirectional OneToMany between Order and OrderLine (Order would have a collection of OrderLines). Or you can choose to have a ManyToOne association between OrderLine and Order (OrderLine would have a reference to its Order). Or you can choose to have both, … Read more
You should add the option onDelete=”SET NULL” in the annotation of your entity Publication like this: class Publication { /** * @ORM\ManyToOne(targetEntity=”Teacher”, inversedBy=”publications”) * @ORM\JoinColumn(name=”teacher_id”, referencedColumnName=”id”, onDelete=”SET NULL”) */ protected $teacher; } This modification is registered in the table declaration itself. Hence, you need a database migration or a schema change for this to take … Read more