Update « Composite « JPA Q&A

1. How to update a table with composite key using hibernate?    stackoverflow.com

I am newbie to hibernate. If there is a table which has a composite key, how to update the table using hibernate.

2. jpa update for objects having comosite primary key    stackoverflow.com

I have a composite primary key for my object.How can i use a jpa to update my object? Normally we use the following code

EntityManagerFactory emf = Persistence.createEntityManagerFactory("jpa");
EntityManager em = emf.createEntityManager();
Student stud1 = ...

3. how to update composite keys in hibernate    stackoverflow.com

I have a table with 8 columns C1,C2,C3,C4,C5,C6,C7,C8, where combination of {C1,C2,C3} is a composite key. I want to update only C2's data, but when I try to update that it's ...

4. problem in composite-id when updating?    forum.hibernate.org

Hi! I have this kind of mapping:

5. dynamic-update does not seem to work for composite-id    forum.hibernate.org

I'm using a legacy database , where the primary keys are not simple integers or numbers but consisting op to 5 fields. Furthermore this is an oracle database where there is trigger auditing happenning. In the triggers there is an oracle function used(UPDATING) which can detect there is an update on the field , but not if the field value actually ...

6. HOWTO Update Composite-id    forum.hibernate.org

Hello Fellows, i'm a beginner, i really like to know why hibernate can not update my object. i use load + set + commit and nothing happens i need to update a value that is inside a composite id then, i know constraints about Relational Model. but if you put as example in TOAD: UPDATE cpvanchdba.oabb445t_veiculos_x_peca_jit SET PKSV_445PECA = 'OLDPK' WHERE ...

7. Update + composite-id    forum.hibernate.org

Hi, I will like to know how to update value of a composite ID. Here is an exemple of my code: I create a class for my composite ID EtudiantSommairePK but each time i try to modify one of ...

8. Objects with composite keys not updated    forum.hibernate.org

Newbie Joined: Wed Dec 22, 2004 11:22 am Posts: 1 We have a problem with composite keys and hibernate. Below i have attached the database design and parts from the hibernate mapping files. When i create a new article i want to set the vendor, so i set the vendor in the article also i add the article to the vendors ...

9. having a problem when updating composite-element property    forum.hibernate.org

Newbie Joined: Tue Feb 08, 2005 2:26 pm Posts: 4 Using Hibernate 2.1.8 with Oracle. I'm having a problem when updating an object that has a collection of "composite-element" There is one field ( codeInitiateur, column = CODE_INITIATEUR_CTRL in my example ), in the composite element, that we don't keep the value, we always ask a service to provide that value, ...

10. problem with composite-id's explicit update    forum.hibernate.org

Newbie Joined: Wed Mar 02, 2005 3:05 am Posts: 2 Hi everyone. I have to import CSV file into DB, every line of csv file represents one record in table. the table has two naturial key fileds and no version field. 1.What is the proper way to do this type of job? 2.Why I can' explicitly update the table? when I ...

11. Strange problem with update (composite key)    forum.hibernate.org

Hi all, I'm having a strange problem with updates (possibly due to a composite key) where I need to specifically call update() in order to persist changes to an object (I shouldn't need to). The class mapping is defined as follows: and the code looks something ...

12. Can I update an object (an Long) in composite key??    forum.hibernate.org

Can I update an object in a composite key?? Example: Code:

13. update problems -- composite elements    forum.hibernate.org

14. update composite primary key    forum.hibernate.org

Hi, The scenario: I have a table with a compostite primary key, say cloumn X+Y. My query is, how can i update column Y (i wish to change the primary key but change only one column) using hibernate 2.1.7 Basic SQL would be, update tableName set Y=? where X=? and Y=?. Any light on this please... Thanks in advance naren

15. updating composite primary key    forum.hibernate.org

Is it possible to update properties of an object that belong to its composite primary key after is has been persisted ? Is there a way (other than composite keys) to enable the program to maintain the ids of its objects without the interference of hibernate. That is, not declaring a specific id property for the pojo ?

16. When are (Composite)UserTypes updated?    forum.hibernate.org

Expert Joined: Thu Jan 29, 2004 2:31 am Posts: 362 Location: Switzerland, Bern Code: /* * Copyright 2005 Bedag Informatik AG * */ package ch.bedag.gba.test.type; import java.io.Serializable; import java.sql.PreparedStatement; import java.sql.ResultSet; import java.sql.SQLException; import java.sql.Types; import org.hibernate.HibernateException; import ch.bedag.gba.type.AbstractUserType; /** * @alias LanguageStringType * @since 21.07.2005 */ public class TestMultiLanguageStringUserType extends AbstractUserType { private static ...

17. composite-element does not get updated    forum.hibernate.org

Newbie Joined: Sat May 22, 2004 1:47 pm Posts: 13 Need help with Hibernate? Read this first: http://www.hibernate.org/ForumMailingli ... AskForHelp Hi, I have a composite-element that can be read normally but I cant get the field "LIDO" updated. I really dont know what is going on... Any ideas? Thanks. Hibernate version: 3.2 cr2 Mapping documents:

18. Composite Key : Problem with update    forum.hibernate.org

I am facing a problem, which I dont know how to handle. I am using a table which has a composite key, lets say C1 and C2. The key C1 and C2 are also foreign key to another table. In the application it is possible the value of C2 key can be changed for a particular record ( for example, in ...

19. updating a column of composite primary key    forum.hibernate.org

20. Update operation using composite id    forum.hibernate.org

Hi, I m using Hibernate3 and SQL Server. There is no primary Key in my table. Insert and Delete operation are working properly but When I Try to update a record.....It niether Update record nor giving any error/exception. My Mapping File is: