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Re^3: win32api::commport install fails

by Khen1950fx (Canon)
on Nov 01, 2012 at 11:54 UTC ( #1001809=note: print w/replies, xml ) Need Help??


in reply to Re^2: win32api::commport install fails
in thread win32api::commport install fails

I always IGNORE anonymonks, but thanks for the warning anyway.

Replies are listed 'Best First'.
Re^4: win32api::commport install fails
by Anonymous Monk on Nov 01, 2012 at 12:41 UTC

    I always IGNORE anonymonks, but thanks for the warning anyway

    Way to ignore me with a response, your logic is ironclad

    instead of providing some kind of insight into the OPs problem, you just trot out your pointless /tired /generic cpan dependency meme

    Can't have commport without all those Crypt:: modules

    Troll

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[Corion]: erix: Yeah, I just found that it has no documentation at all on how to circumvent/ eliminate "1+n SELECTs" by building a local hash... I guess I have to make ->has_many do the hash lookup instead of doing the SQL query. But as the problem ...
[Corion]: ... has only manifested itself so far through the puzzled questions of other bystanders, I won't go deeper at this time. But the DBIx::Class documentation could well do with a document on how to make "it" (that is, ORMs in general) faster ;)
[Corion]: I find that DBIx::Class, like most ORMs makes things easy until they become performance critical and then makes it horribly hard to change things because the design is highly inflexible if you don't already know about the problems of 1+n :-/
[choroba]: that's why I don't like similar libraries. They pretend you don't have to learn SQL, but in the end, you have to learn how SQL plus to overcome their own limitations
[Corion]: "Just write the proper SQL beforehand" is of course the appropriate solution, but if you did that, you wouldn't/couldn't use DBIx::Class either. At least not in an obvious (to me) way.
choroba scratches a "how"
[Corion]: choroba: Exactly... But maybe that's just because I'm old and grumpy ;)
[Corion]: But maybe that could also be a nice talk, how to restructure your DBIx::Class-based app to remove 1+n-style query patterns
[Corion]: In theory, that should be easy because you should have the "where" clause from part 1 of the patterns and then do the corresponding single select using that where clause to select all rows in one go for the n other parts.
[Corion]: But in practice I don't see any obvious places documented in DBIx::Class where one would do that and then just feed hash lookups instead of DB lookups for ->has_many results

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