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DBIx::Class::ResultClass::HashRefInflator(3)ntributed Perl Documentationass::ResultClass::HashRefInflator(3)



NAME
       DBIx::Class::ResultClass::HashRefInflator - Get raw hashrefs from a resultset

SYNOPSIS
        use DBIx::Class::ResultClass::HashRefInflator;

        my $rs = $schema->resultset('CD');
        $rs->result_class('DBIx::Class::ResultClass::HashRefInflator');
        while (my $hashref = $rs->next) {
          ...
        }

         OR as an attribute:

        my $rs = $schema->resultset('CD')->search({}, {
          result_class => 'DBIx::Class::ResultClass::HashRefInflator',
        });
        while (my $hashref = $rs->next) {
          ...
        }

DESCRIPTION
       DBIx::Class is faster than older ORMs like Class::DBI but it still isn't designed primarily for
       speed. Sometimes you need to quickly retrieve the data from a massive resultset, while skipping the
       creation of fancy row objects.  Specifying this class as a "result_class" for a resultset will change
       "$rs->next" to return a plain data hash-ref (or a list of such hash-refs if "$rs->all" is used).

       There are two ways of applying this class to a resultset:

       •   Specify "$rs->result_class" on a specific resultset to affect only that resultset (and any
           chained off of it); or

       •   Specify "__PACKAGE__->result_class" on your source object to force all uses of that result source
           to be inflated to hash-refs - this approach is not recommended.

METHODS
   inflate_result
       Inflates the result and prefetched data into a hash-ref (invoked by DBIx::Class::ResultSet)

CAVEATS
       •   This will not work for relationships that have been prefetched. Consider the following:

            my $artist = $artitsts_rs->search({}, {prefetch => 'cds' })->first;

            my $cds = $artist->cds;
            $cds->result_class('DBIx::Class::ResultClass::HashRefInflator');
            my $first = $cds->first;

           $first will not be a hashref, it will be a normal CD row since HashRefInflator only affects
           resultsets at inflation time, and prefetch causes relations to be inflated when the master
           $artist row is inflated.

       •   Column value inflation, e.g., using modules like DBIx::Class::InflateColumn::DateTime, is not
           performed.  The returned hash contains the raw database values.



perl v5.16.2                                     2012-10-18     DBIx::Class::ResultClass::HashRefInflator(3)