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#!/usr/bin/perl |
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package KiokuDB::Backend::Serialize::JSPON::Collapser; |
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use Moose; |
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use KiokuDB::Entry; |
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use KiokuDB::Reference; |
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use JSON; |
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use namespace::clean -except => 'meta'; |
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with qw(KiokuDB::Backend::Serialize::JSPON::Converter); |
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has reserved_key => ( |
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isa => "RegexpRef", |
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is => "ro", |
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lazy_build => 1, |
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); |
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sub _build_reserved_key { |
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my $self = shift; |
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my $reserved = '^(?:' . join("|", map { quotemeta($self->$_) } map { $_ . "_field" } $self->_jspon_fields) . ')$'; |
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qr/(?: $reserved | ^public:: )/x |
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} |
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sub collapse_jspon { |
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my ( $self, $data ) = @_; |
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if ( my $ref = ref $data ) { |
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if ( $ref eq 'KiokuDB::Reference' ) { |
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return { |
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$self->ref_field => $data->id . ( $self->inline_data ? "" : "." . $self->data_field ), |
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( $data->is_weak ? ( weak => 1 ) : () ), |
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}; |
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} elsif ( $ref eq 'KiokuDB::Entry' ) { |
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my $id = $data->id; |
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return { |
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( $data->has_class ? ( $self->class_field => $data->class ) : () ), |
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( $data->has_class_meta ? ( $self->class_meta_field => $data->class_meta ) : () ), |
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( defined $data->class_version ? ( $self->class_version_field => $data->class_version ) : () ), |
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( $id ? ( $self->id_field => $id ) : () ), |
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( $data->root ? ( $self->root_field => JSON::true() ) : () ), |
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( $data->deleted ? ( $self->deleted_field => JSON::true() ) : () ), |
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( $data->has_tied ? ( $self->tied_field => $data->tied ) : () ), |
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( defined $data->backend_data ? ( $self->backend_data_field => $data->backend_data ) : () ), |
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( $self->inline_data |
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? %{ $self->collapse_jspon($data->data) } |
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: ( $self->data_field => $self->collapse_jspon($data->data) ) |
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), |
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}; |
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} elsif ( $ref eq 'HASH' ) { |
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735
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my %hash; |
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735
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my $res = $self->reserved_key; |
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735
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foreach my $key ( keys %$data ) { |
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my $value = $data->{$key}; |
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my $collapsed = ref($value) ? $self->collapse_jspon($value) : $value; |
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if ( $key =~ $res ) { |
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$hash{"public::$key"} = $collapsed; |
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} else { |
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$hash{$key} = $collapsed; |
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} |
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} |
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return \%hash; |
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} elsif ( $ref eq 'ARRAY' ) { |
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return [ map { ref($_) ? $self->collapse_jspon($_) : $_ } @$data ]; |
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} |
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} |
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return $data; |
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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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=head1 NAME |
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KiokuDB::Backend::Serialize::JSPON::Collapser - Collapse entry data to |
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JSPON compliant structures |
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=head1 SYNOPSIS |
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my $c = KiokuDB::Backend::Serialize::JSPON::Collapser->new( |
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id_field => "_id", |
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); |
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my $hashref = $c->collapse_jspon($entry); |
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=head1 DESCRIPTION |
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This object is used by L<KiokuDB::Backend::Serialize::JSPON> to convert |
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L<KiokuDB::Entry> objects to JSPON compliant structures. |
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=head1 ATTRIBUTES |
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See L<KiokuDB::Backend::Serialize::JSPON::Converter> for attributes shared by |
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L<KiokuDB::Backend::Serialize::JSPON::Collapser> and |
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L<KiokuDB::Backend::Serialize::JSPON::Expander>. |
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=head1 METHODS |
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=over 4 |
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=item collapse_jspon $entry |
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Collapses the entry recursively, returning a JSPON compliant data structure |
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suitable for serialization as a JSON string. |
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=back |
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=cut |
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