Robert Graf-Waczenski wrote:
>
> Frank W. Zammetti wrote:
>>
>> Dave is 100% correct: S2 != S1. They have a few concepts in common
>> naturally, but there is, I think it's fair to say, more that makes
>> them different than makes them alike. A complete rewrite is probably
>> the best bet (I heard tell of some porting possibilities, side-by-side
>> execution possibilities, but I'm not sure what the status of those are).
>>
>> Or, as I said, no rewrite at all. Sometimes leaving well enough alone
>> really is the best option.
>
> I'd suggest to not rewrite completely in one big bang but to do this in
> a continuous process over time. In our shop here i'm currently working
> with S2 in a (so we claim) highly complex application heavily using
> Struts 1 (or, to say the truth, a custom-patched beta version of Struts
> 1). So we have here the typical scenario where actually upgrading
> *everything* would be an effort in the mega-worker-hours region.
> Therefore we decided to indeed run S2 in parallel with S1 and implement
> new stuff with S2 and continue maintaining the old stuff in S1. (We may
> or may not port old S1 actions to S2 in the future, that depends on the
> issues we encounter. Existing and working S1 actions will definitely not
> be touched!)
> Running the two side-by-side works as expected (if you define the filter
> mapping in your web.xml properly). We have a few battle-proven S1-based
> actions that we need the new S2 actions to interact with, for this we
> needed a few S2 struts.xml result definitions that redirect to S1-based
> action URLs, and a few S1-based stuts-config.xml forward paths that
> redirect to S2-based action URLs.
> I would definitely say that this approach is good for any non-trivial
> application. As an ultimate benefit, working with two frameworks in
> parallel keeps your mind fresh :-)
>
> Robert
>
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>
>
You are right Robert, thanks! keeping both S1 and S2 is a good option or
slowly upgrade to S2 completely. Makes lot of sense.
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