DBIx::Class::ResultClass::HashRefInflator - Get raw hashrefs from a resultset
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 = $rs->next) {
...
}
DBIx::Class is faster than older ORMs like Class::DBI but it still isn't
designed primarily for speed. Sometimes you need to quickly retrieve the data
from a massive resultset, while skipping the creation of fancy result objects.
Specifying this class as a "result_class"
for a resultset will change "$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.
Inflates the result and prefetched data into a hash-ref (invoked by
DBIx::Class::ResultSet)
- 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.
Check the list of additional DBIC resources.
This module is free software copyright by the DBIx::Class (DBIC) authors. You
can redistribute it and/or modify it under the same terms as the DBIx::Class
library.