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package Aniki::Plugin::RangeConditionMaker; |
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use 5.014002; |
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use namespace::autoclean; |
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use Mouse::Role; |
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use Carp qw/carp croak/; |
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use SQL::QueryMaker qw/sql_gt sql_lt sql_ge sql_le sql_and/; |
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sub make_range_condition { |
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my ($self, $range) = @_; |
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my %total_range_condition; |
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for my $type (qw/lower upper gt lt ge le/) { |
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next unless exists $range->{$type}; |
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ref $range->{$type} eq 'HASH' |
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or croak "$type condition *MUST* be HashRef."; |
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my $func; |
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if ($type eq 'lower' || $type eq 'gt') { |
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$func = \&sql_gt; |
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} |
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elsif ($type eq 'upper' || $type eq 'lt') { |
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$func = \&sql_lt; |
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} |
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elsif ($type eq 'ge') { |
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$func = \&sql_ge; |
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} |
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elsif ($type eq 'le') { |
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$func = \&sql_le; |
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} |
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die "Unknown type: $type" unless $func; |
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my $range_condition = $range->{$type}; |
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for my $column (keys %$range_condition) { |
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croak "$column cannot be a reference value for range condition" |
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if ref $range_condition->{$column}; |
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my $condition = $func->($range_condition->{$column}); |
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$total_range_condition{$column} = |
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exists $total_range_condition{$column} ? sql_and([$total_range_condition{$column}, $condition]) |
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: $condition; |
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} |
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} |
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return %total_range_condition ? \%total_range_condition : undef; |
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} |
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1; |
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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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Aniki::Plugin::RangeConditionMaker - range condition maker |
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=head1 SYNOPSIS |
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package MyDB; |
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use Mouse v2.4.5; |
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extends qw/Aniki/; |
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with qw/Aniki::Plugin::RangeConditionMaker/; |
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package main; |
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my $db = MyDB->new(...); |
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my $where = $db->make_range_condition({ upper => { id => 10 } }); |
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# => { id => { '<' => 10 } } |
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$where = $db->make_range_condition({ lower => { id => 0 } }); |
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# => { id => { '>' => 0 } } |
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$where = $db->make_range_condition({ le => { id => 10 } }); |
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# => { id => { '<=' => 10 } } |
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$where = $db->make_range_condition({ ge => { id => 0 } }); |
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# => { id => { '>=' => 0 } } |
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$where = $db->make_range_condition({ upper => { id => 10 }, lower => { id => 0 } }); |
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# => { id => [-and => { '>' => 0 }, { '<' => 10 }] } |
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=head1 LICENSE |
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Copyright (C) karupanerura. |
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This library is free software; you can redistribute it and/or modify |
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it under the same terms as Perl itself. |
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=head1 AUTHOR |
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karupanerura E<lt>karupa@cpan.orgE<gt> |
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=cut |