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package Data::Keys::E::Key::Adapt; |
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=head1 NAME |
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Data::Keys::E::Key::Adapt - change key with a callback |
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=head1 DESCRIPTION |
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Uses callback to change keys. |
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=cut |
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use warnings; |
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use strict; |
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our $VERSION = '0.03'; |
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use Moose::Role; |
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requires('get', 'set'); |
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=head1 PROPERTIES |
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=head2 key_adapt |
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A callback that is called with a key as an argument for every set and get. |
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The default callback will not change the key. |
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=cut |
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has 'key_adapt' => ( isa => 'CodeRef', is => 'rw', lazy => 1, default => sub { sub { return $_[0] } } ); |
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around 'get' => sub { |
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my $get = shift; |
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my $self = shift; |
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my $key = shift; |
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$key = $self->key_adapt->($key); |
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return $self->$get($key); |
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}; |
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around 'set' => sub { |
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my $set = shift; |
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my $self = shift; |
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my $key = shift; |
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my $value = shift; |
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$key = $self->key_adapt->($key, $value); |
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$self->$set($key, $value); |
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return $key; |
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}; |
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1; |
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__END__ |
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=head1 AUTHOR |
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Jozef Kutej |
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=cut |