On Sun, 15 Mar 2009, Andreas Mock wrote:
Hi all,
I digged around the provided manuals for DBIC, but there is one (besides others
of course ;-) ) things
I don't understand at the moment:
Where is the mapping done/declared between the attributes of a business object
and the attributes
of the row object returned by a ResultSet?
Business object? Care to explain what you mean by that? Examples?
Which class or instance of it creates the business objects when getting it from
database?
Is this part of DBIC or does DBIX just ends there?
Or (what is likely) do I just miss something?
Taking a wild guess:
$schema->resultset('Books');
returns rows with attributes defined in the Result class Book.pm
$schema->resultset('Books')->search_related('author');
returns rows with attributes defined in the Result class Author.pm
$schema->resultset('Books')->search({}, { prefetch => 'author'});
returns rows with attributes defined in Book.pm, AND related objects
defined in Author.pm
Any call based directly on Books will return Book objects, if you add cols
with columns, or select/as, its still a Book-based object. If you switch
sources by search_related to another resultset, that is the one the
results are based on.
Is that what you meant?
Jess
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