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
|
package RDF::QueryX::Lazy;
use 5.010;
use common::sense;
use constant { FALSE => 0, TRUE => 1 };
use utf8;
our (%Lazy);
BEGIN {
$RDF::QueryX::Lazy::AUTHORITY = 'cpan:TOBYINK';
$RDF::QueryX::Lazy::VERSION = '0.003';
%Lazy =
map { /^PREFIX (.+?):/ ? ($1 => $_) : () }
split /\r?\n/, <<'LAZY';
PREFIX bibo: <http://purl.org/ontology/bibo/>
PREFIX bio: <http://purl.org/vocab/bio/0.1/>
PREFIX cc: <http://creativecommons.org/ns#>
PREFIX dc: <http://purl.org/dc/elements/1.1/>
PREFIX doap: <http://usefulinc.com/ns/doap#>
PREFIX foaf: <http://xmlns.com/foaf/0.1/>
PREFIX frbr: <http://purl.org/vocab/frbr/core#>
PREFIX geo: <http://www.w3.org/2003/01/geo/wgs84_pos#>
PREFIX gr: <http://purl.org/goodrelations/v1#>
PREFIX ical: <http://www.w3.org/2002/12/cal/ical#>
PREFIX og: <http://ogp.me/ns#>
PREFIX org: <http://www.w3.org/ns/org#>
PREFIX owl: <http://www.w3.org/2002/07/owl#>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX rdfa: <http://www.w3.org/ns/rdfa#>
PREFIX rdfg: <http://www.w3.org/2004/03/trix/rdfg-1/>
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX rev: <http://purl.org/stuff/rev#>
PREFIX rss: <http://purl.org/rss/1.0/>
PREFIX sioc: <http://rdfs.org/sioc/ns#>
PREFIX skos: <http://www.w3.org/2004/02/skos/core#>
PREFIX vann: <http://purl.org/vocab/vann/>
PREFIX vcard: <http://www.w3.org/2006/vcard/ns#>
PREFIX void: <http://rdfs.org/ns/void#>
PREFIX wdrs: <http://www.w3.org/2007/05/powder-s#>
PREFIX wot: <http://xmlns.com/wot/0.1/>
PREFIX xhv: <http://www.w3.org/1999/xhtml/vocab#>
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>
LAZY
}
use Scalar::Util 0 qw[blessed refaddr];
use RDF::Query 2.900;
use parent qw[RDF::Query];
sub new
{
my ($class, $query, @params) = @_;
my $lazy = '';
$lazy .= join "\n",
map { $Lazy{$_} }
grep { $query =~ /$_:/ }
keys %Lazy;
if (exists $params[0]
and ref $params[0] eq 'HASH'
and ref $params[0]{lazy} eq 'HASH')
{
my %more = %{ delete($params[0]{lazy}) // {} };
$lazy .= join "\n",
map { sprintf('PREFIX %s: <%s>', $_, $more{$_}) }
grep { $query =~ /$_:/ }
keys %more;
}
return $class->SUPER::new($lazy.$query, @params);
}
TRUE;
__END__
=head1 NAME
RDF::QueryX::Lazy - yeah, all those PREFIX definitions get boring
=head1 SYNOPSIS
my $query = RDF::QueryX::Lazy->new(<<SPARQL);
SELECT *
WHERE {
?person foaf:name ?name .
OPTIONAL { ?person foaf:homepage ?page . }
}
SPARQL
=head1 DESCRIPTION
This is a fairly trivial subclass of L<RDF::Query> that auto-defines
many prefixes for you, so you can be lazy. It should have most of the
common ones in there.
Oh yeah, and if you want, you can pass a key 'lazy' in the RDF::Query
C<< %options >> hash with additional prefix mappings.
=head1 BUGS
Please report any bugs to
L<http://rt.cpan.org/Dist/Display.html?Queue=RDF-QueryX-Lazy>.
=head1 SEE ALSO
L<RDF::Query>.
=head1 AUTHOR
Toby Inkster E<lt>tobyink@cpan.orgE<gt>.
=head1 COPYRIGHT AND LICENCE
This software is copyright (c) 2011 by Toby Inkster.
This is free software; you can redistribute it and/or modify it under
the same terms as the Perl 5 programming language system itself.
=head1 DISCLAIMER OF WARRANTIES
THIS PACKAGE IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
