Generating Custom Code for JPA Objects from a Database

I am asking for an easy way to add some custom code to a JPA object generated by Eclipse from a database.

Basically I want to add public String properties containing entity property names and use them when I need to specify "property name" as String and make sure there are no runtime access errors.

Something like that

@Entity
@Table(name="clients")
@NamedQuery(name="ClientModel.findAll", query="SELECT c FROM ClientModel c")
public class ClientModel implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @Column(name="id_client")
    private long idClient;

    public String name;

    public ClienteModel() {
    }

    public long getIdClient() {
        return this.idClient;
    }

    public void setIdClient(long idClient) {
        this.idClient = idClient;
    }

    public String getName() {
        return this.name;
    }

    public void setName(String name) {
        this.name = name;
    }

    //CUSTOM CODE
    public static final String idClientProperty = "idClient";
    public static final String nameProperty = "name";
}

      

        
        
        
      

    

So I could use a property name like

ClientModel.nameProperty

      

        
        
        
      

    

and be safe during compilation of its existence and in case of refactoring names after further entity education.

I am aware of the existence of Telosys Tools and co., But I was hoping there might be something simpler / faster (like a custom class provided as a plugin in generating WSDL_to_entity with JAXB)

Thank.