I like the pattern concise and simple, in our service class:
Action action = Action.parse(request.getAction());
action.doAction();
If I migrate them to static inner class, would it be like this?
Action action = ActionFactory.create(request.getAction()));
action.doAction();
klc
On Tuesday, May 26, 2015 at 11:54:56 PM UTC+8, Nate Bauernfeind wrote:
>
> What is it that you like about the pattern that you want to keep? Are you
> looking for static inner classes? You can couple the pattern with an
> assisted inject factory, or providers depending on your use case.
>
> public abstract class Action {
> public abstract double doAction();
>
> public static class ADD extends Action {
> @Override
> public double doAction() { ... }
> }
>
> public static class UPDATE extends Action {
> @Override
> public double doAction() { ... }
> }
>
> public static class DELETE extends Action {
> @Override
> public double doAction() { ... }
> }
> }
>
> Nate
>
> On Tue, May 26, 2015 at 7:06 AM klc <[email protected] <javascript:>>
> wrote:
>
>> Hi guys, thanks for all the reply before I have migrate my servlet
>> application to guice, partly at least.
>>
>> I have a question about design, we use the enum template pattern a lot,
>> like this:
>>
>> public enum Action {
>> ADD {
>> @Override
>> public double doAction() {...}
>> },
>> UPDATE {
>> @Override
>> public double doAction() {...}
>> },
>> DELETE{
>> @Override
>> public double doAction() {...}
>>
>> public abstract double doAction();
>>
>> }
>>
>> This is great pattern and I have nothing against it, but you can't inject
>> it into other class and can't inject anything into it.
>> Is there a similar way to do the same, but injectable?
>>
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