WW-4835: Configurable handlers

[lukaszlenart]

This PR changes API a bit to allow pass current ActionInvocation to the REST content type handlers to allow implement different behaviour based on a current action.

WW-4835

[asfbot]

Lukasz Lenart on dev@struts.apache.org replies:
Hi,

Can you take a look on this?

Thanks in advance
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2017-08-02 15:02 GMT+02:00 lukaszlenart git@git.apache.org:
the REST content type handlers to allow implement different behaviour base=
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[cnenning]

Using AbstractContentTypeHandler to implement deprecated methods to log on WARN seems like a good idea.

I don't see where new parameter ActionInvocation is actually used. Is that yet to come?

[lukaszlenart]

I don't see where new parameter ActionInvocation is actually used. Is that yet to come?

Not yet :)

[cnenning]

Do you want to further develop this PR or merge it first?

[lukaszlenart]

Merge it first as I think those changes are less intrusive as the whole idea in my head ;-)

[cnenning]

and what is your idea?

[lukaszlenart]

With the ActionInvocation in place I can access an action which means the action can provide additional informations how to serialise/deserialize object/string via dedicated interfaces, e.g.

public interface DateFormatHandler {
  Date toDate(String dateStr);
  String fromDate(Date date);
}

and when action will implement such interface, a handler can pass formatting a date to the action instead of doing this by itself. And many more :)

[cnenning]

sounds great 👍