[Dbix-class] Fastest method to check for key existence?

[QE :: Felix Ostmann]

We are using this function in our ResultSet.pm:

sub exists {
    my ($self, $query) = @_;

    return $self->search($query, { rows => 1, select => [\1] })->single;
}


Have a nice day
Felix


2015-02-12 1:05 GMT+01:00 Charlie Garrison <garrison at zeta.org.au>:

> Good morning,
>
> On 11/2/15 at 10:58 PM +0100, Ekki Plicht (DF4OR) <ekki at plicht.de> wrote:
>
> >I am thinking of setting up a special resultset which contains only
> >the key as a returned value by SELECT, but I am wondering if there is
> >a faster method.
>
> Put a method in your ResultSet class, eg:
>
> sub key_exists {
>     my ($self, $key) = @_;
>     my $row = $self->find( $key );
>     return $row ? 1 : 0;
> }
>
>
> Elsewhere:
>
> my $got_row = $schema->resultset('RSClass')->key_exists($key);
>
>
> Charlie
>
> --
>    Charlie Garrison  <garrison at zeta.org.au>
>    github.com/cngarrison   metacpan.org/author/CNG
>
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