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package WebService::Audioscrobbler::Artist;
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use warnings;
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use strict;
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use CLASS;
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use base 'WebService::Audioscrobbler::Base';
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575
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=head1 NAME
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WebService::Audioscrobbler::Artist - An object-oriented interface to the Audioscrobbler WebService API
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=cut
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our $VERSION = '0.08';
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# postfix related accessors
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CLASS->mk_classaccessor("base_resource_path" => "artist");
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# similar artists related accessors
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CLASS->mk_classaccessor("similar_artists_postfix" => "similar.xml");
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CLASS->mk_classaccessor("similar_artists_class" => "WebService::Audioscrobbler::SimilarArtist");
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# change the field used to sort stuff
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CLASS->tracks_sort_field('reach');
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# requiring stuff
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CLASS->similar_artists_class->require or die($@);
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CLASS->tracks_class->require or die($@);
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CLASS->tags_class->require or die($@);
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# object accessors
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CLASS->mk_accessors(qw/name mbid streamable picture_url/);
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=head1 SYNOPSIS
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This module implements an object oriented abstraction of an artist within the
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Audioscrobbler database.
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39
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use WebService::Audioscrobbler;
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41
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my $ws = WebService::Audioscrobbler->new;
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42
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43
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# get an object for artist named 'foo'
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my $artist = $ws->artist('foo');
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46
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# fetch artists similar to 'foo'
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47
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my @similar = $artist->similar_artists;
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48
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49
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print "Artists similar to: " . $artist->name . "\n";
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51
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# prints each one of their names
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for my $similar (@similar) {
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print $similar->name . "\n";
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}
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56
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# retrieves tracks from 'foo'
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57
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my @tracks = $artist->tracks;
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58
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59
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# retrieves tags associated with 'foo'
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60
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my @tags = $artist->tags;
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61
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62
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This module inherits from L.
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63
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64
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=head1 FIELDS
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65
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66
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=head2 C
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67
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68
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The name of a given artist as provided when constructing the object.
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69
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70
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=head2 C
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71
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72
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MusicBrainz ID as provided by the Audioscrobbler database.
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73
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74
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=head2 C
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76
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URI object pointing to the location of the artist's picture, if available.
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78
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=head2 C
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79
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80
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Flag indicating whether the artist has streamable content available.
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82
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=cut
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83
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84
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=head1 METHODS
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85
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86
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=cut
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87
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88
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=head2 C
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90
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=head2 C
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91
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92
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Creates a new object using either the given C<$artist_name> or the C<\%fields>
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hashref. The data fetcher object is a mandatory parameter and must
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be provided either as the second parameter or inside the C<\%fields> hashref.
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95
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96
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=cut
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97
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98
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sub new {
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0
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1
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my $class = shift;
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100
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0
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my ($name_or_fields, $data_fetcher) = @_;
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101
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102
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0
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0
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my $self = $class->SUPER::new(
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ref $name_or_fields eq 'HASH' ?
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$name_or_fields : { name => $name_or_fields, data_fetcher => $data_fetcher }
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105
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);
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107
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0
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$self->croak("No data fetcher provided")
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108
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unless $self->data_fetcher;
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109
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110
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0
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0
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unless (defined $self->name) {
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111
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0
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0
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if (defined $self->{content}) {
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112
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0
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$self->name($self->{content});
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113
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}
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114
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else {
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115
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0
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$class->croak("Can't create artist without a name");
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116
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}
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117
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}
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118
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119
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0
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return $self;
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120
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}
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122
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=head2 C
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123
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124
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=head2 C
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125
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126
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=head2 C
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127
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128
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Retrieves similar artists from the Audioscrobbler database. $filter can be used
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to limit artist with a low similarity index (ie. artists which have a similarity
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130
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index lower than $filter won't be returned).
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132
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Returns either a list of artists or a reference to an array of artists when called
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in list context or scalar context, respectively. The artists are returned as
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L objects by default.
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136
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=cut
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137
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138
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*related_artists = *artists = \&similar_artists;
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139
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140
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sub similar_artists {
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0
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1
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my $self = shift;
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142
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0
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0
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my $filter = shift || 1;
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143
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144
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0
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my $data = $self->fetch_data($self->similar_artists_postfix);
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145
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146
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0
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$self->load_fields($data);
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147
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148
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0
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my @artists;
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149
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150
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# check if we've got any similar artists
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151
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0
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0
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if (ref $data->{artist} eq 'ARRAY') {
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152
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153
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0
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shift @{$data->{artist}};
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154
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155
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@artists = map {
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156
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0
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my $artist = $_;
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157
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$self->similar_artists_class->new({
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158
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picture_url => URI->new($_->{image}),
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159
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related_to => $self,
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160
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data_fetcher => $self->data_fetcher,
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161
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0
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map {$_ => $artist->{$_}} qw/name streamable mbid match/
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162
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})
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163
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0
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} grep { $_->{match} >= $filter } @{$data->{artist}};
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0
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164
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165
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}
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166
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167
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0
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0
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return wantarray ? @artists : \@artists;
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168
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}
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169
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170
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=head2 C
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171
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172
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Retrieves the artist's top tracks as available on Audioscrobbler's database.
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173
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174
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Returns either a list of tracks or a reference to an array of tracks when called
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175
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in list context or scalar context, respectively. The tracks are returned as
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176
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L objects by default.
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177
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178
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=cut
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179
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180
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=head2 C
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181
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182
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Retrieves the artist's top tags as available on Audioscrobbler's database.
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183
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184
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Returns either a list of tags or a reference to an array of tags when called
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185
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in list context or scalar context, respectively. The tags are returned as
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186
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L objects by default.
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187
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188
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=cut
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189
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190
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=head2 C
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191
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192
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Loads artist fields from the hashref C<\%data>.
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193
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194
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=cut
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195
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196
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sub load_fields {
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197
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0
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0
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1
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my $self = shift;
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198
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0
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my $data = shift;
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199
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200
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0
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$self->streamable($data->{streamable});
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201
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202
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0
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0
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$self->picture_url(URI->new($data->{picture}))
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203
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unless $self->picture_url;
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204
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205
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$self->mbid($data->{mbid})
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206
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0
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0
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unless $self->mbid;
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207
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}
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208
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209
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=head2 C
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210
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211
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Returns the URL from which other URLs used for fetching artist info will be
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212
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derived from.
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213
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214
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=cut
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215
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216
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sub resource_path {
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217
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0
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0
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1
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my $self = shift;
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218
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0
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$self->uri_builder( $self->name );
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219
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}
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220
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221
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=head1 AUTHOR
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222
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223
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Nilson Santos Figueiredo Junior, C<< >>
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224
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225
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=head1 COPYRIGHT & LICENSE
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226
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227
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Copyright 2006-2007 Nilson Santos Figueiredo Junior, all rights reserved.
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229
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This program is free software; you can redistribute it and/or modify it
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under the same terms as Perl itself.
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232
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=cut
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234
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1; # End of WebService::Audioscrobbler::Artist
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