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=item C<find_by @where>

Retrieves one item from the corresponding table matching the

conditions given in C<@where>.

This is shorthand for the following call:

    SL::DB::Manager::SomeClass->get_all(where => [ … ], limit => 1)

=item C<find_by_or_create @where>

This calls L</find_by> with C<@where> and returns its result if one is

found.

If none is found, a new instance of the corresponding DB object class

is created and returned. Such a new object is not inserted into the

database automatically.

=item C<get_first @args>

Retrieves the first item from the database by calling C<get_all> with

a limit of 1. The C<@args> are passed through to C<get_all> allowing

for arbitrary filters and sort options to be applied.

=item C<make_manager_methods [@method_list]>

Calls Rose's C<make_manager_methods> with the C<@method_list> or

C<all> if no methods are given.