[Dbix-class] Auto-joins

[Matt S Trout]

Nilson Santos Figueiredo Junior wrote:
> On 3/30/06, Matt S Trout <dbix-class at trout.me.uk> wrote:
>> Yes, that would be what we'd intend to do. But for the purposes of that we
>> need a full SQL::Abstract abstract query tree parser with useful callbacks.
>> Guess where the only such parser is. Now note my comments above about its
>> complete lack of usefull callbacks :)
> 
> I'm not quite getting it.
> You *can* do joins when an explicity "join => ..." clause is passed.
> What prevents Class::DBI from automatically generating this?
 >
> I mean... this can be almost trivially done. Or are there some hidden
> issues I'm missing?

quick example for you from the S::A tests

[-maybe => {race => [-and => [qw(black white asian)]]},
   {-nest => {firsttime => [-or => {'=','yes'}, undef]}},
   [ -and => {firstname => {-not_like => 'candace'}},
             {lastname => {-in => [qw(jugs canyon towers)]}} ] ] ]

making it work for trivial queries is trivial. making it work for every 
possible query is more complex :)

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