File Coverage

blib/lib/PRANG/Graph/Meta/Attr.pm

Criterion	Covered	Total	%
statement	3	4	75.0
branch			n/a
condition			n/a
subroutine	1	2	50.0
pod			n/a
total	4	6	66.6

line	stmt	sub	time	code
1
2				package PRANG::Graph::Meta::Attr;
3				$PRANG::Graph::Meta::Attr::VERSION = '0.20';
4	1	1	1962	use Moose::Role;
	1		2
	1		8
5
6				has 'xmlns' =>
7				is => "rw",
8				isa => "Str",
9				predicate => "has_xmlns",
10				;
11
12				has 'xml_isa' =>
13				is => "rw",
14				isa => "Str\|Moose::Meta::TypeConstraint",
15				predicate => "has_xml_isa",
16				;
17
18				has 'xml_name' =>
19				is => "rw",
20				isa => "Str",
21				predicate => "has_xml_name",
22				;
23
24				has 'xml_required' =>
25				is => "rw",
26				isa => "Bool",
27				predicate => "has_xml_required",
28				;
29
30				has 'xmlns_attr' =>
31				is => "rw",
32				isa => "Str",
33				predicate => "has_xmlns_attr",
34				;
35
36				package Moose::Meta::Attribute::Custom::Trait::PRANG::Attr;
37				$Moose::Meta::Attribute::Custom::Trait::PRANG::Attr::VERSION = '0.20';
38				sub register_implementation {
39	0	0		"PRANG::Graph::Meta::Attr";
40				}
41
42				1;
43
44				=head1 NAME
45
46				PRANG::Graph::Meta::Attr - metaclass metarole for XML attributes
47
48				=head1 SYNOPSIS
49
50				package My::XML::Language::Node;
51
52				use Moose;
53				use PRANG::Graph;
54
55				has_attr 'someattr' =>
56				is => "rw",
57				isa => $str_subtype,
58				predicate => "has_someattr",
59				;
60
61				=head1 DESCRIPTION
62
63				When defining a class, you mark attributes which correspond to XML
64				attributes. To do this in a way that the PRANG marshalling machinery
65				can use when converting to XML and back, make the attributes have this
66				metaclass.
67
68				You could do this in principle with:
69
70				has 'someattr' =>
71				traits => ['PRANG::Attr'],
72				...
73
74				But L<PRANG::Graph> exports a convenient shorthand for you to use.
75
76				If you like, you can also set the C<xmlns> and C<xml_name> attribute
77				property, to override the default behaviour, which is to assume that
78				the XML attribute name matches the Moose attribute name, and that the
79				XML namespace of the attribute is empty. Note if you specify the
80				C<xmlns> for an attribute, it I<must> have that namespace set, or it
81				is not the same attribute.
82
83				If you set the C<xml_required> property, then it is an error for the
84				property not to be set when parsing or emitting.
85
86				Setting the C<xmlns> attribute to C<*> will allow any XML namespace to
87				be set for that attribute. In this case, you should also set the
88				C<xmlns_attr> property, which should refer to another attribute which
89				will record which XML namespace URI was passed in. This introduces a
90				potential ambiguity; the same attribute may be passed in multiple
91				times, with different XML namespaces.
92
93				You can also set C<xml_isa>, which currently if set will not check the
94				type constraint against the input on marshall in. In the future it
95				will specify the type constraint to apply at marshall in time, instead
96				of waiting for the constructor to apply one.
97
98				=head1 SEE ALSO
99
100				L<PRANG::Graph::Meta::Class>, L<PRANG::Graph::Meta::Element>
101
102				=head1 AUTHOR AND LICENCE
103
104				Development commissioned by NZ Registry Services, and carried out by
105				Catalyst IT - L<http://www.catalyst.net.nz/>
106
107				Copyright 2009, 2010, NZ Registry Services. This module is licensed
108				under the Artistic License v2.0, which permits relicensing under other
109				Free Software licenses.
110
111				=cut