Re: [Asapframework-support] VO's in ASAPFramework

[Stephan B. <s.b...@hc...>]

Owen van Dijk wrote:
> Hi All,
>
> I only see VO's used in the framework when using events to force
> strict type checking. Is it a possible solution to provide a generic
> VO class in the org.asapframework.data package?
>
>   
Hi Owen,

The basic answer is no. A ValueObject class contains only data. 
Therefore, a generic ValueObject class would be empty, since it can only 
be generic if it doesn't already contain data. And in my view, an empty 
class is not very useful. But maybe I understand your question 
differently than you mean it?

The VO classes that I have encountered, are so project-specific that 
they can't be generalised. Only when they are required by a class that 
we want in the framework, we will put a specific VO class into the 
framework. For example: The MovieManager uses the class 
org.asapframework.management.movie.MovieData internally for data storage.

The upcoming release will however provide functionality for easier 
dealing with VO classes in combination with loading data as XML. There 
will be an interface IParsable that VO classes can implement, and that 
will allow them to get their data from a Parser. This Parser class is 
fed with data from XML2Object. There will also be a DataLoader class 
that allows you to load XML with or without POST parameters. This new 
package greatly reduces the number of lines needed to go from XML to 
typed VO classes, and makes the whole process a lot better maintainable.

I hope this answers your question?

Greetings,
Stephan