JPA - Removing entities

Posted by James P. on Stack Overflow See other posts from Stack Overflow or by James P.
Published on 2010-04-07T11:00:39Z Indexed on 2010/04/07 11:03 UTC
Read the original article Hit count: 351

Filed under:

jpa

|

remove

|

entity

|

hibernate

I have a Story entity with the following associations:

Story <1-*> Chapter
Story <1-*> Comment
Story <*-1> User

What is the correct way of removing this entity and handling the all the entities that is referring to? Is there some shorthand way of specifying that associated entities must be handled automatically or is the @PreRemove annoation mentionned in the article below a valid of achieving this?

http://blog.xebia.com/2009/04/09/jpa-implementation-patterns-removing-entities/

© Stack Overflow or respective owner

Related posts about jpa

Detach an entity from a JPA persistence context (JPA 2.0 / Hibernate / EJB 3 / J2EE 6)

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I wrote a stateless EJB method allowing to get an entity in "read-only" mode. The way to do this is to get the entity with the EntityManager then detach it (using the JPA 2.0 EntityManager). My code is the following: @PersistenceContext private EntityManager entityManager; public T getEntity(int… >>> More
AndroMDA maven code generation and JPA Annotations

as seen on Stack Overflow - Search for 'Stack Overflow'
I am using the AndroMDA plugin for maven to generate code from an uml diagram made in MagicDraw. When the code is generated, AndroMDA desings the JPA annotation for the persitence layer. I think that at the compilation process AndroMDA uses Naming Strategies to determine the Table and Column names… >>> More
How to populate Java (web) application with initial data using Spring/JPA/Hibernate

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to setup my database with initial data programmatically. I want to populate my database for development runs, not for testing runs (it's easy). The product is built on top of Spring and JPA/Hibernate. Developer checks out the project Developer runs command/script to setup database with initial… >>> More
Eclipselink problem in a javase project

as seen on Stack Overflow - Search for 'Stack Overflow'
I am getting this error when I am running my eclipselink project. [EL Warning]: 2008.12.05 11:47:08.056--java.lang.NoClassDefFoundError: org/jboss/resource/adapter/jdbc/ValidConnectionChecker was thrown on attempt of PersistenceLoadProcessor to load class com.mysql.jdbc.integration.jboss.MysqlValidConnectionChecker… >>> More
JPA thinks I'm deleting a detached object

as seen on Stack Overflow - Search for 'Stack Overflow'
So, I've got a DAO that I used to load and save my domain objects using JPA. I finally managed to get the transaction stuff working (with a bunch of help from the folks here...), now I've got another issue. In my test case, I call my DAO to load a domain object with a given id, check that it got… >>> More

Related posts about remove

yum remove doesn't remove things completely ?

as seen on Server Fault - Search for 'Server Fault'
I am trying to remove apache completely from my server,which is a ec2 instance, running Amazonian linux v2.6xx. Lets assume I have a file in /etc/httpd/conf/xyz.txt I am using the following code : yum remove httpd when I try to cd /etc/httpd I get "there is no such directory" error. Next,… >>> More
jQuery ::: Does remove really remove?

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to remove a table row using jQuery, and while it disappears from the screen, and therefore, appears to work, in Firebug, I can still see the code for it. There are form elements in this row, and so, I want to understand whether the row is truly being deleted or not, because I wouldn't… >>> More
How to completely remove ldap and remove the directory tree

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
so I followed this guide: https://help.ubuntu.com/11.04/serverguide/C/openldap-server.html to install and configure ldap but then I discoverd both phpLDAPadmin and Luma and have decided to rebuild my tree from scratch using one of those tools. However Im not sure how to completely remove LDAP now… >>> More
Sed: how to remove every ODD line?

as seen on Stack Overflow - Search for 'Stack Overflow'
Remove lines marked: remove Not Remove Not Remove ... >>> More
Remove hardware from "safely remove hardware" list on Windows 7

as seen on Super User - Search for 'Super User'
Hi, I have a USB wifi card (D-Link DWA-125) on a Windows 7 x64 computer. The problem is that the card appears on the "safely remove hardware" list, but I don't ever want to unplug it, so I would like to remove it from the list. So far I have only found solutions that mess with the registry (and… >>> More