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package Redis::Fast::Hash;
# ABSTRACT: tie Perl hashes to Redis hashes
# VERSION
# AUTHORITY
use strict;
use warnings;
require Tie::Hash;
require Redis::Fast;
our @ISA = qw(Redis::Fast Tie::StdHash);
sub TIEHASH {
my ($class, $prefix, @rest) = @_;
my $self = $class->new(@rest);
$self->__set_data({});
$self->__get_data->{prefix} = $prefix ? "$prefix:" : '';
return $self;
}
sub STORE {
my ($self, $key, $value) = @_;
$self->set($self->__get_data->{prefix} . $key, $value);
}
sub FETCH {
my ($self, $key) = @_;
$self->get($self->__get_data->{prefix} . $key);
}
sub FIRSTKEY {
my $self = shift;
$self->__get_data->{prefix_keys} = [$self->keys($self->__get_data->{prefix} . '*')];
$self->NEXTKEY;
}
sub NEXTKEY {
my $self = shift;
my $key = shift @{ $self->__get_data->{prefix_keys} };
return unless defined $key;
my $p = $self->__get_data->{prefix};
$key =~ s/^$p// if $p;
return $key;
}
sub EXISTS {
my ($self, $key) = @_;
$self->exists($self->__get_data->{prefix} . $key);
}
sub DELETE {
my ($self, $key) = @_;
$self->del($self->__get_data->{prefix} . $key);
}
sub CLEAR {
my ($self) = @_;
$self->del($_) for $self->keys($self->__get_data->{prefix} . '*');
$self->__get_data->{prefix_keys} = [];
}
1; ## End of Redis::Fast::Hash
=head1 NAME
Redis::Fast::Hash - tie Perl hashes to Redis hashes
=head1 SYNOPSYS
## Create fake hash using keys like 'hash_prefix:KEY'
tie %my_hash, 'Redis::Fast::Hash', 'hash_prefix', @Redis_new_parameters;
## Treat the entire Redis database as a hash
tie %my_hash, 'Redis::Fast::Hash', undef, @Redis_new_parameters;
$value = $my_hash{$key};
$my_hash{$key} = $value;
@keys = keys %my_hash;
@values = values %my_hash;
%my_hash = reverse %my_hash;
%my_hash = ();
=head1 DESCRIPTION
Ties a Perl hash to Redis::Fast. Note that it doesn't use Redis Hashes, but
implements a fake hash using regular keys like "prefix:KEY".
If no C<prefix> is given, it will tie the entire Redis database as a hash.
Future versions will also allow you to use real Redis hash structures.
=cut
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