On May 30, 2012, at 2:18 PM, Eduard Moraru wrote:

> Hi Thomas,
> 
> On Tue, May 29, 2012 at 5:07 PM, Thomas Mortagne
> <[email protected]>wrote:
> 
>> Hi devs,
>> 
>> As I said in another mail I'm working on a diff/merge module to use in
>> XWiki, the first target being Extension Manager and document history
>> (since both are going to use the same code, see Marius mails).
>> 
>> You can see the detail on https://github.com/xwiki/xwiki-commons/pull/2.
>> 
>> TODO/QUESTIONS:
>> * improve the generic 3 ways merge to be at least as good as the
>> List<String> 3 ways merge and get rid of JDiff
>> * not sure where/if I should put String related helpers (things that
>> do a diff on two String instead of having to cut List<String> or
>> List<Character> and call the diff API etc.)
>> 
> 
> This looks a bit awkward to use, specially from (but not limited to)
> Velocity. When I think of a diff service API, I imagine passing Strings,
> not lists of composing strings or list of characters.

Thomas is proposing a Java API here AFAIK. For Velocity we never expose java 
API directly;  we use Script Services for that.

Thanks
-Vincent

PS: FTR I'm a big -1 to model our Java APIs to be easily usable from Velocity 
since that means having suboptimal APIs for the wrong reason ;)

> Also, I don`t quite understand the List<String> approach. I can imagine the
> List<Character> version by breaking a string into characters, but what
> would you do for List<String>? You would split a String using "\s" as a
> separator?
> 
> Can you please mention a use case where a list oriented API is better than
> a string based one?
> 
> Thanks,
> Eduard
> 
>> 
>> I'm ready to merge it into master so I'm waiting your vote.
>> 
>> Caleb is it OK to put new stuff in master already or should I wait the
>> complete release to be done ?
>> 
>> Here is my +1.
>> 
>> Thanks,
>> --
>> Thomas Mortagne
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