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package KiokuDB::Backend::Hash; |
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BEGIN { |
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$KiokuDB::Backend::Hash::AUTHORITY = 'cpan:NUFFIN'; |
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} |
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$KiokuDB::Backend::Hash::VERSION = '0.57'; |
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use Moose; |
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# ABSTRACT: In memory backend for testing purposes. |
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use Data::Stream::Bulk::Util qw(bulk); |
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use Carp qw(croak); |
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use namespace::clean -except => 'meta'; |
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with ( |
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'KiokuDB::Backend::Serialize::Delegate', |
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'KiokuDB::Backend', |
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'KiokuDB::Backend::Role::Query::Simple::Linear', |
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'KiokuDB::Backend::Role::TXN::Memory::Scan', |
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); |
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has storage => ( |
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isa => "HashRef", |
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is => "rw", |
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default => sub { {} }, |
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); |
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sub clear_storage { |
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my $self = shift; |
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%{ $self->storage } = (); |
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} |
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sub get_from_storage { |
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my ( $self, @uids ) = @_; |
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my $s = $self->storage; |
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return if grep { not exists $s->{$_} } @uids; |
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my @objs = map { $self->deserialize($_) } @{ $s }{@uids}; |
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if ( @objs == 1 ) { |
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return $objs[0]; |
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} else { |
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return @objs; |
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} |
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} |
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sub commit_entries { |
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my ( $self, @entries ) = @_; |
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my $s = $self->storage; |
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foreach my $entry ( @entries ) { |
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my $id = $entry->id; |
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if ( $entry->deleted ) { |
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delete $s->{$id}; |
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} else { |
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if ( exists $s->{$id} and not $entry->has_prev ) { |
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croak "Entry $id already exists in the database"; |
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} |
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$s->{$id} = $self->serialize($entry); |
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} |
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} |
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} |
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sub exists_in_storage { |
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my ( $self, @uids ) = @_; |
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map { exists $self->storage->{$_} } @uids; |
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} |
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sub all_storage_entries { |
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my $self = shift; |
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return bulk(map { $self->deserialize($_) } values %{ $self->storage }); |
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} |
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__PACKAGE__->meta->make_immutable; |
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__PACKAGE__ |
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__END__ |
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=pod |
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=encoding UTF-8 |
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=head1 NAME |
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KiokuDB::Backend::Hash - In memory backend for testing purposes. |
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93
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=head1 VERSION |
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version 0.57 |
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97
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=head1 SYNOPSIS |
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my $dir = KiokuDB->new( |
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backend => KiokuDB::Backend::Hash->new(), |
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); |
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103
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=head1 DESCRIPTION |
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105
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This L<KiokuDB> backend provides in memory storage and retrieval of |
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L<KiokuDB::Entry> objects using L<Storable>'s C<dclone> to make dumps of the |
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backend clear. |
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109
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=head1 AUTHOR |
110
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111
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Yuval Kogman <nothingmuch@woobling.org> |
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113
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=head1 COPYRIGHT AND LICENSE |
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This software is copyright (c) 2014 by Yuval Kogman, Infinity Interactive. |
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This is free software; you can redistribute it and/or modify it under |
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the same terms as the Perl 5 programming language system itself. |
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120
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=cut |