Maybe another better solution:
class Filter:
public abstract class Filtro<T> {
public abstract T getValore();
public abstract void setValore(T valore);
}
an then 1 class for each filter that you want (String, date,ecc ecc)
as this:
FilterString:
public class FiltroString extends Filtro implements Serializable{
private String valore;
public Object getValore() {
return valore;
}
public void setValore(Object valore) {
this.valore = (String) valore;
}
}
Any suggestion?
Thanks
On 24 Gen, 18:39, bond <[email protected]> wrote:
> Hi,
> I've a big problem with generics in GWT. I'm making a generic utility
> to set a filter in a collection of data. I'd like to have a class
> Filter with an attribute value that is the type that the user set:
>
> public class Filter <T> implements Serializable{
>
> private T value;
>
> }
>
> The problem is that GWT compiler raise an error beacuse the type T is
> not Serializable. Another solution doesn't work:
>
> public class Filter <T extends Serializable> implements Serializable{
>
> private T value;
>
> }
>
> beacusa the type T can either implements or extends serializable.
>
> So the only solution that I've think is to create a wrapper class
> (that implements interface MyType) for each type that the attribute
> value can be obtain (String,Date,Integer) and so the class Filter
> became:
>
> public class Filter <T extends MyType & Serializable> implements
> Serializable{
>
> private T value;
>
> }
>
> But I dont' like this solution.
>
> Can someone post some ideas??
>
> Thanks
>
> Regards
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