Question about Model Driven Interface

[Umesh Awasthi <um...@gmail.com>]

Hi All,

Have rarely used model driven interface and not sure about how exactly it
work.
Can any one point me what will be difference between

    ProfileDTOModel md = new ProfileDTOModel();


    publicProfileDTOModel getModel()
    {

       return  md;
    }

and

  public ProfileDTOModel getModel()
    {

       return  new ProfileDTOModel();;
    }


-- 
With Regards
Umesh Awasthi
http://www.travellingrants.com/

Re: Question about Model Driven Interface

[Amol Ghotankar <gh...@gmail.com>]

Hi Umesh,

Both you mentioned are same.

ModelDriven is best used to create new object if they do not exist.

So your getModel method must be

ProfileDTOModel md;

public ProfileDTOModel getModel()
{
    if(md != null)// Or Some other condition as required by your model.
Typically check for Id
    {
        return md;
    }
    md = new ProfileDTOModel();
    return md;
}

Here if you use modelDriven interceptor, model objects are cached in
ValueStack (or autopushed) between your edits in one way.

But you also need to use prepare and params interceptor to take full
adavantage of this.

Struts2 experts correct my langauge if required.



On Tue, Oct 15, 2013 at 5:02 PM, Umesh Awasthi <um...@gmail.com>wrote:

> Hi All,
>
> Have rarely used model driven interface and not sure about how exactly it
> work.
> Can any one point me what will be difference between
>
>     ProfileDTOModel md = new ProfileDTOModel();
>
>
>     publicProfileDTOModel getModel()
>     {
>
>        return  md;
>     }
>
> and
>
>   public ProfileDTOModel getModel()
>     {
>
>        return  new ProfileDTOModel();;
>     }
>
>
> --
> With Regards
> Umesh Awasthi
> http://www.travellingrants.com/
>



-- 



*With Best Regards,*

Amol Ghotankar
Technical Lead
M: +91 9960 980 419 <http://www.cursivetech.com>