(E ai juliano, blz ?)
On Thu, 2002-08-29 at 14:29, Juliano Moraes wrote:
> Hi,
> I am using the tutorial 3 example of ojb for
> relationships n:m, but I am with a doubt. In the
> example I have 2 forms, with and without intermediate
> class. I made using the intermediate class (role) and
> it functioned. Now I do not using the intermediate
> class "role". Which object I have that to pass to the
> method "store", person or project?????
I'm not sure I understood your question, but.
If you call broker.store(person || project) and configure ojb to
auto-update then all references and collections your Object has will be
stored as well !
You can write to me in Portuguese if you want :-)
>
> Thanks,
> Juliano Moraes
> ++++++++++++++++++
> www.qualita.inf.br
> ++++++++++++++++++
>
> My source:
>
> //package test.ojb.tutorial1;
>
> import ojb.broker.PersistenceBroker;
> import ojb.broker.PersistenceBrokerException;
> import test.ojb.broker.*;
> /**
> * Insert the type's description here.
> * Creation date: (04.03.2001 10:34:15)
> * @author: Administrator
> */
> public class UCEnterNewRole1 extends AbstractUseCase
> {
> /**
> * UCEnterNewProduct constructor comment.
> */
> public UCEnterNewRole1(PersistenceBroker broker)
> {
> super(broker);
> }
>
> /** perform this use case*/
> public void apply()
> {
>
> //Insert the Person
> Person newPerson = new Person();
> // now read in all relevant information and
> fill the new object:
> System.out.println("please enter a new
> person");
>
> String in = readLineWithMessage("enter ID :");
> newPerson.setId(Integer.parseInt(in));
> in = readLineWithMessage("enter First name:");
> newPerson.setFirstname(in);
> in = readLineWithMessage("enter Last name:");
> newPerson.setLastname(in);
>
>
> //Insert the Project
> Project newProject = new Project();
> // now read in all relevant information and
> fill the new object:
> System.out.println("please enter a new
> Project");
> in = readLineWithMessage("enter ID :");
> newProject.setId(Integer.parseInt(in));
> in = readLineWithMessage("enter Title:");
> newProject.setTitle(in);
> in = readLineWithMessage("enter
> Description:");
> newProject.setDescription(in);
>
> //HERE . WITH ROLE, OK.
> /*
> // this will be our new object
> Role newRole = new Role();
> // now read in all relevant information and
> fill the new object:
> System.out.println("please enter a new Role
> (n:m)");
> in = readLineWithMessage("enter PERSON_ID :");
> newRole.setPerson_id(Integer.parseInt(in));
> in = readLineWithMessage("enter PROJECT_ID
> :");
> newRole.setProject_id(Integer.parseInt(in));
>
> in = readLineWithMessage("enter Role name:");
> newRole.setRoleName(in);
>
> newRole.setProject(newProject);
> newRole.setPerson(newPerson);
> */
>
>
> // now perform persistence operations
> try
> {
> // 1. open transaction
> System.out.println("1");
> broker.beginTransaction();
> // 2. make the new object persistent
> HERE, what use?==> broker.store(newProject);
> System.out.println("3");
> broker.commitTransaction();
> }
> catch (Exception ex)
> {
> System.out.println("ERRO ->"+ex);
>
> // if something went wrong: rollback
> broker.abortTransaction();
> System.out.println(ex.getMessage());
> ex.printStackTrace();
> }
> }
>
> /** get descriptive information on use case*/
> public String getDescription()
> {
> return "Enter a new Role (n:m) sem classe
> intermediaria";
> }
> }
>
>
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Leandro Rodrigo Saad Cruz
IT - Inter Business Tecnologia e Servicos (IB)
http://www.ibnetwork.com.br
http://jakarta.apache.org/ojb
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