[Springframework-rcp-dev] [Spring-JIRA] Commented: (RCP-202) Binding to a superclass should be possible

[Geoffrey (JIRA) <no...@at...>]

    [ http://opensource.atlassian.com/projects/spring/browse/RCP-202?page=comments#action_14839 ] 

Geoffrey commented on RCP-202:
------------------------------

By use of a factory method.

In my particilar use case I need it for enums, which can be created with the following factory method in 1.5:
Enum.valueOf(targetClass, (String) source)

Of course by default subclass binders should take prescendence over superclass binders.



To stipulate the difference between the targetClass matching and targetClass instantation, I 'd even recommend a namechange, something like:

    protected Object doConvert(Object source, Class instanceTargetClass) throws Exception {
        // ...
    } 

> Binding to a superclass should be possible
> ------------------------------------------
>
>          Key: RCP-202
>          URL: http://opensource.atlassian.com/projects/spring/browse/RCP-202
>      Project: Spring Framework Rich Client Project
>         Type: Bug
>   Components: Binding System
>     Reporter: Geoffrey
>     Assignee: Oliver Hutchison
>     Priority: Minor

>
> The follow code should called for a conversion from Dog to Animal:
> // Dog extends Animal
> public class TextToAnimal extends AbstractConverter {
>     public TextToAnimal () {
>     }
>     public Class[] getSourceClasses() {
>         return new Class[]{String.class}; // subclasses count here
>     }
>     public Class[] getTargetClasses() {
>         return new Class[]{Animal.class}; // subclasses don't count (while they should)
>     }
>     protected Object doConvert(Object source, Class targetClass) throws Exception {
>         // ...
>     }
> }

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