Tagged Questions

Java Persistence API

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4
votes
2answers
50 views

Making a database entity superclass

I am using JPA for my database work and I need to create a database entity superclass which all of my table entities will extend. Every database entity will have a primary key named ...
0
votes
1answer
37 views

First facelets with JPA app on glassfish

So far as I've tested it, these few facelets files with JPA database connections work as intended. The queue, MyQueue, is at ...
1
vote
1answer
115 views

JavaSE client: is this how to get a new JPA EntityManager each time? (DAO)

This class functions, in that the program can be left open for hours and it will still reconnect to the database when the user prompts for a CRUD operation. I've read about DAO, and some other ...
3
votes
1answer
65 views

Inserting data in 3 tables of a database with JPA

I am starting a personal project and my first step is to insert a lot of statuses from tweeter in a database along with it's user and place (if applicable). This is the database structure: Pretty ...
6
votes
1answer
58 views

Intern AuditSystem in DB and getting users from it

My project has a change on the database, so that every INSERT-UPDATE-DELETE action is logged with triggers on the DB. For that they have an extra table created: Table ...
3
votes
3answers
4k views

Efficient way of handling multiple sorting and filtering using JPA

I'm using JPA 2.0, Mojarra 2.1.9 and its component library Primefaces 3.5. I have a table in MySQL database named state_table with three columns. state_id ...
1
vote
2answers
122 views

Repetitive code for different Database Entities with same implementation

I have this code in LogInService ...
2
votes
1answer
734 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. ...
5
votes
2answers
681 views

Checking if entity exist in Google App Engine Datastore using JPA 1

Below is my method in checking if entity already exist. ...