Programming
28 May 2012 0 Comments

Adding JPA Support to a Maven/Eclipse/JSF2 Project

Introduction

the Java Persistence API (JPA) allows for easy managing of relational data in Java applications. It is a replacement of the much criticized EJB 2.0 and EJB 2.1 entity beans. In this post we show how to add JPA support to an existing Maven/Eclipse/JSF2 project with Java EE 6.

With JPA you can do create an entity that is backed by a table in the database. For example you can create a persisted entity (which is just a POJO with some annotations):

Name.java

import javax.persistence.Entity;
import javax.persistence.Table;
import javax.persistence.Id;
import javax.persistence.Column;
 
@Entity
@Table(name="CUSTOMER_INFORMATION")
public class Customer {
    private String name;
 
    @Id
    @Column(name="FULL_NAME")
    public int getName() {
        return name;
    }
 
    public void setName(String name) {
        this.name= name;
    }
}

And a client class that fetches all customer names with and prints them:
Client.java

import javax.persistence.Persistence;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityManager;
 
public class Client

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