/usr/share/perl5/Attean/TermMap.pm is in libattean-perl 0.017-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 | use v5.14;
use warnings;
=head1 NAME
Attean::TermMap - Mapping terms to new terms
=head1 VERSION
This document describes Attean::TermMap version 0.017
=head1 SYNOPSIS
use v5.14;
use Attean;
my $m = Attean::TermMap->short_blank_map;
my $new_blank = $m->map( Attean::Blank->new('abcdefg') );
say $new_blank->ntriples_string; # _:a
=head1 DESCRIPTION
The Attean::TermMap class represents a one-way mapping process from and to
L<Attean::API::Term> objects. This mapping may rename the blank identifiers,
skolemize nodes, or map the nodes in some other, custom way.
It conforms to the L<Attean::API::Mapper> role.
=head1 ATTRIBUTES
=over 4
=item C<< mapper >>
A CODE reference that will map L<Attean::API::Term> objects to (possibly different)
term objects.
=back
=head1 CLASS METHODS
=over 4
=cut
package Attean::TermMap 0.017 {
use Moo;
use Types::Standard qw(CodeRef);
use Attean::API::Binding;
use Data::UUID;
use namespace::clean;
with 'Attean::Mapper';
has 'mapper' => (is => 'ro', isa => CodeRef, default => sub { shift }, required => 1);
around BUILDARGS => sub {
my $orig = shift;
my $class = shift;
if (scalar(@_) == 1) {
return $class->$orig(mapper => shift);
}
return $class->$orig(@_);
};
=item C<< canonicalization_map >>
Returns a new L<Attean::TermMap> that canonicalizes recognized typed
L<Attean::API::Literal> values.
=cut
sub canonicalization_map {
my $class = shift;
my %map;
return $class->new(mapper => sub {
my $term = shift;
return $term unless ($term->does('Attean::API::Literal'));
if ($term->does('Attean::API::NumericLiteral')) {
return $term->canonicalized_term;
}
return $term;
});
}
=item C<< uuid_blank_map >>
Returns a new L<Attean::TermMap> that renames blank nodes with UUID values.
=cut
sub uuid_blank_map {
my $class = shift;
my %map;
return $class->new(mapper => sub {
my $term = shift;
return $term unless ($term->does('Attean::API::Blank'));
my $id = $term->value;
return $map{$id} if (defined($map{$id}));
my $uuid = Data::UUID->new->create_hex;
my $new = Attean::Blank->new( $uuid );
$map{$id} = $new;
return $new;
});
}
=item C<< short_blank_map >>
Returns a new L<Attean::TermMap> that renames blank nodes with short
alphabetic names (e.g. _:a, _:b).
=cut
sub short_blank_map {
my $class = shift;
my %map;
my $next = 'a';
return $class->new(mapper => sub {
my $term = shift;
return $term unless ($term->does('Attean::API::Blank'));
my $id = $term->value;
if (defined(my $t = $map{$id})) {
return $t;
} else {
my $new = Attean::Blank->new( $next++ );
$map{$id} = $new;
return $new;
}
});
}
=item C<< rewrite_map( \%map ) >>
Given C<< %map >> whose keys are term C<< as_string >> serializations, and
objects are L<Attean::API::Term> objects, returns a new term map object that
maps terms matching entries in C<< %map >>, and all other terms to themselves.
=cut
sub rewrite_map {
my $class = shift;
my $map = shift;
return $class->new(mapper => sub {
my $term = shift;
return $map->{ $term->as_string } if (exists $map->{ $term->as_string });
return $term;
});
}
=back
=head1 METHODS
=over 4
=item C<< map( $term ) >>
Returns the term that is mapped to by the supplied C<< $term >>.
=cut
sub map {
my $self = shift;
my $term = shift;
return $self->mapper->( $term );
}
=item C<< binding_mapper >>
Returns a mapping function reference that maps L<Attean::API::Binding>
objects by mapping their constituent mapped L<Attean::API::Term> objects.
=cut
sub binding_mapper {
my $self = shift;
return sub {
my $binding = shift;
return $binding->apply_map($self);
}
}
}
1;
__END__
=back
=head1 BUGS
Please report any bugs or feature requests to through the GitHub web interface
at L<https://github.com/kasei/attean/issues>.
=head1 SEE ALSO
L<http://www.perlrdf.org/>
=head1 AUTHOR
Gregory Todd Williams C<< <gwilliams@cpan.org> >>
=head1 COPYRIGHT
Copyright (c) 2014--2016 Gregory Todd Williams.
This program is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
=cut
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