Historically, Hibernate facilitated the storage and retrieval of Java domain objects via Object/Relational Mapping. Today, Hibernate is a collection of related projects enabling developers to utilize POJO-style domain models in their applications in ways extending well beyond Object/Relational ...
7
votes
1answer
120 views
NHibernate select with Query Over optimization for user roles base case
I have a complicated select procedure that I solved with a 5 query transaction, so I am posting it here to get suggestions on how I can shorten it up a bit. I am hoping that someone can help me make ...
2
votes
2answers
68 views
A query on Hibernate database design
I am writing a simple web application where I have a User entity and set of pre-defined questions to be answered by the User. The answers provided by the users for these questions would need to be ...
1
vote
1answer
53 views
Coherent usage of Hibernate's session and DAO
public void something()
{
Session session = HibernateUtil.newSession();
AModelDAO amd = new AModelDAO(session);
BModelDAO bmd = new BModelDAO(session);
Transaction tx = ...
2
votes
1answer
321 views
Using generic methods for basic crud operations
Regarding re-usability, is this OK? What might go wrong? What would be a better design? Performance-related issues and any other comments are welcome.
package sample.library.dao.util;
import ...
2
votes
1answer
214 views
Managing Data access layer exceptions
I am developing a webapp using Spring MVC + Hibernate. I created a GenericDao class that implements basic data access methods, to be extended by all my concrete daos in the app. What I want advice or ...
1
vote
1answer
584 views
A database schema for an online rental store [closed]
I am creating an online rental store using the following:
JSF 2.1
Hibernate 4.2
Spring 3.2
MySQL 5.5
Below is my database schema design:
Link in case image not displayed.
The rental user has ...
2
votes
1answer
53 views
ORM Entity with many similar relationships
To provide some background context, I'm implementing a web-based solution (Java, Spring, Hibernate) that allows the creation/authoring of task-centric workflow documents. Basically a workflow ...
1
vote
2answers
113 views
Repetitive code for different Database Entities with same implementation
I have this code in LogInService
public User isValid(User user) {
if(user == null)
return user;
User db_user = userDao.getUserByUsername(user.getUsername());
if ...
2
votes
1answer
482 views
JPA connection : is this code is efficient enough
By reading some tutorial i have written some peace of code to do crud operation . I just want to know how is this code is efficient or how can i make better ?
Here i am giving code of 3 class
1. ...
3
votes
1answer
250 views
Any problems in using hibernate's session.connection() to run native sql
In my project, they use Hibernate's session the below mentioned way and then save entity objects with in a transaction.
Session session = HibernateUtil.getCurrentSession();
...
1
vote
0answers
2k views
Many-to-many hibernate mapping if link table is having extra columns mappings
I have many-to-many mapping with extra columns in the join table. The table structure looks like this:
table vendor{vendor_id, vendor_name, vendor_password, etc...}
table student{student_id, ...
3
votes
1answer
99 views
Hibernate @OneToMany relationship
I started to play around with Hibernate since yesterday and came with the following example of OneToMany relationship example, but I am not sure if I am doing right and I have no one around me knowing ...
3
votes
0answers
247 views
Is it Best way to use HibernateCompositeUser type for handling localized contents
I am trying to use HibernateCompositeUser type to handle i18n specific data in my application. I am trying to use the below approach.
I have a table named master table which contains all locale ...
1
vote
1answer
965 views
Hibernate proxy converter for GWT
Here's a class that converts Hibernate proxies to normal classes. This is useful with GWT for example, when sending objects loaded from database to the GWT client.
Please review it.
package ...
2
votes
1answer
339 views
Dao function using hibernate
Just wondering if the following is the best way to write a dao function, should i get the entity manager before the transaction and close it after the transaction everytime? should i write ...
1
vote
2answers
459 views
Hibernate transaction advice [closed]
I'm new to Hibernate so I need some advice/direction on doing Transactions.
I have a DAO like
public class MyDao extends HibernateDaoSupport implements IMyDao {
@Override
public Foo getFoo(int ...
