Beaneditform looses data of non visual fields.

[Michael Schmidt <cs...@googlemail.com>]

Hi all,

I'm trying to use the BeanEditForm for editing the data of a object and 
persist it using hibernate.

Here are some code snippets:

Page Class:

public class AdministrationGroupsEdit
{
    @Inject
    Session session;

    @InjectPage
    AdministrationGroups redirectPage;

    private Integer groupId;

    @Property
    private Group group;

    void onActivate(Integer personId)
    {
       this.groupId = personId;
    }

    void setupRender()
    {
       this.group = (Group) this.session.createQuery("from Group where 
id= :p_id")
          .setInteger("p_id", this.groupId)
          .uniqueResult();
    }

    @CommitAfter
    void onValidateFromGroupForm()
    {
       this.session.merge(this.group);
    }

    AdministrationGroups onSuccess()
    {
       return this.redirectPage;
    }
}


My Page itself looks like this:

...
<t:beaneditform t:id="groupForm" object="group"
         submitLabel="Save">
         [BeanEditForm here]
</t:beaneditform>
...

And here is my mode:

@Entity
@Table(name = "group", schema = "public")
public class Group implements java.io.Serializable
{

    private int id;
    private String guid;
    private String name;

    public Group()
    {
    }

    @Id
    @NonVisual
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(name = "id", unique = true, nullable = false)
    public int getId()
    {
       return this.id;
    }

    public void setId(int groupId)
    {
       this.id = groupId;
    }

    @Column(name = "name")
    public String getName()
    {
       return this.name;
    }

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

    @Column(name = "guid")
    @NonVisual
    public String getGuid()
    {
       return this.guid;
    }

    public void setGuid(String guid)
    {
       this.guid = guid;
    }

     ...
}



So you can see i marked the guid and id property as @NonVisual which 
seems not to work. The property is not displayed in the beaneditform but 
also the value is lost when onSuccess() or onValidateFromGroupForm() is 
called. I expected non visual properties to be stored in hidden fields 
or something like this!? This seems to be not the default behavoir 
because the documentation says: @NonVisual could be used for id 
fields... but in my application the values are lost...

Am I missing something?

Btw: Is there a better way than using the @NonVisual annotation cause i 
dont't want to put this in my property.

Thanks


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Re: Beaneditform looses data of non visual fields.

["Thiago H. de Paula Figueiredo" <th...@gmail.com>]

On Mon, 21 May 2012 06:07:55 -0300, Michael Schmidt  
<cs...@googlemail.com> wrote:

> Hi all,

Hi!

> I'm trying to use the BeanEditForm for editing the data of a object and  
> persist it using hibernate.

You either @Persist the object or use BeanEditor (which is the base of  
BeanEditForm) and use the Hidden component for the non-editable ones.

> I expected non visual properties to be stored in hidden fields or  
> something like this!?

Nope, they're ignored.

> Btw: Is there a better way than using the @NonVisual annotation cause i  
> dont't want to put this in my property.

Use the exclude parameter of BeanEditForm or BeanEditor.

-- 
Thiago H. de Paula Figueiredo
Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,  
and instructor
Owner, Ars Machina Tecnologia da Informação Ltda.
http://www.arsmachina.com.br

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