Class::DBI::Iterator(3pm) User Contributed Perl Documentation Class::DBI::Iterator(3pm)
NAME
Class::DBI::Iterator - Iterate over Class::DBI search results
SYNOPSIS
my $it = My::Class->search(foo => 'bar');
my $results = $it->count;
my $first_result = $it->first;
while ($it->next) { ... }
my @slice = $it->slice(10,19);
my $slice = $it->slice(10,19);
$it->reset;
$it->delete_all;
DESCRIPTION
Any Class::DBI search (including a has_many method) which returns multiple objects can be made to return an iterator instead simply by
executing the search in scalar context.
Then, rather than having to fetch all the results at the same time, you can fetch them one at a time, potentially saving a considerable
amount of processing time and memory.
CAVEAT
Note that there is no provision for the data changing (or even being deleted) in the database inbetween performing the search and
retrieving the next result.
perl v5.12.4 2005-09-11 Class::DBI::Iterator(3pm)
