foreign key « Insert « JPA Q&A

  1. JPA Q&A
  2. Insert
  3. foreign key




1. Hibernate insert cascade not inserting foreign key    stackoverflow.com

I have two entities: 

@Entity
public class File
.......
@Id @GeneratedValue(strategy=GenerationType.AUTO)
private int id;
@OneToMany(fetch=FetchType.LAZY, mappedBy="file", cascade=CascadeType.ALL)
private List<Tag> tags;
.......
OTHER PROPERTIES
.......

@Entity
public class Tag
.......
@Id @GeneratedValue(strategy=GenerationType.AUTO)
private int id;
@ManyToOne
@JoinColumn(name="file_id")
private File file;
@Column
private String tag;
.......
OTHER PROPERTIES
.......
I am trying to insert into File (and ...

2. Hibernate inserting row foreign key error    stackoverflow.com

Please help me. When i try to create new row in database i receive something about foreign key FOREIGNKEY_CUSTOMER_ID. if i just edit some row it works just fine. Here's entity: 

  ...

3. one-to-many foreign key column contain 0 value on insertion    forum.hibernate.org

I have 2 tables with one-to-many relationship, ex: student and school. under the same single open transaction, i create a new instance for each object representing the 2 tables. I add the student instance to school.getStudents collection. after i commit the transaction which save the "school" instance, one record is inserted in each of the 2 tables. but the problem is ...

4. many to one foreign key - unexpected insert to the table    forum.hibernate.org

Hi I have further downsized my example, and it inserts new rows into mesgtype. If I run the program twice, it will insert the a new row of mesgtype the second time with incremented oid. This is not my plan. The number of rows of the mesgtype should not be increased everytime the job is added. Please tell me how to ...

5. Insert into 2 tables with crossed foreign keys    forum.hibernate.org

Hello! I have two entities mutually referencing each other, table A has a foreign key to Table B, and Table B has a foreign key to A. I know that it perhaps sounds strange but the model is that way...When I trie eecute the save option, I get an "Invalid identifier" error. Does anybody know if there is some way to ...

6. Not able to insert the value in foreign key column    forum.hibernate.org

Hello everyone I am new at Hibernate. I am trying one to many relationship in State and City Table While trying to insert values in a City table with the code void insertCity() { City ct=new City(); Session session=null; ct.setCityName("GANDHINAGAR"); ct.setStateName("GUJRAT"); try{ SessionFactory sessionFactory=new Configuration().configure().buildSessionFactory(); session = sessionFactory.openSession(); } catch(Exception e){ System.out.println("Error"+e); } finally{ session.save(ct); System.out.println("One City Inserted Successfully!!!"); session.flush(); Transaction ...

7. Why Hibernate doesn't check foreign keys at insert on MySql?    forum.hibernate.org

8. Specifying foreign key ids for inserts    forum.hibernate.org

Hibernate version: 2.1.8 Name and version of the database you are using: Oracle 9 Hi Hibernators, I have a performance-tuning question. Let's say I have a DB table called "child" which has a foreign key field called "parent_id" (integer) which, for each record, holds the id of the related record from the "parent" table. I am using hibernate to manage these ...

9. Foreign keys are inserted as zero    forum.hibernate.org

Hello, I am new to hibernate and found myself on a strange problem. I'm using Hibernate 3.2.1 with annotations. The problem is as follows: I have Code: @Entity public class OperationType extends DomainObject { private Collection transactions = new ArrayList(); @OneToMany(mappedBy="operationType",cascade={CascadeType.ALL}) ...





10. How to insert data in two tables having foreign key    forum.hibernate.org

Hi All, I have a two tables A and B. A columns: ID(PK), Name, Address B columns: Age, Hobbies, ID_FK Here ID_FK is the foreign key. We dont have PK in B table and we cannot change the table structure.. Please help me how should I do mapping for these two tables in .hbm files to insert the data in both ...

11. Hibernate does not issue Insert, Foreign Key Exception    forum.hibernate.org

Hey everybody! I'm trying to find a solution to the following problem: I'm developping an application that writes and read to an Oracle DB, I use Hibernate for the ORM. I'll start off by posting my hibernate and Spring configuration: Code: ...