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1 | package stemmaweb::Controller::Relation; |
2 | use Moose; |
3 | use namespace::autoclean; |
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4 | use TryCatch; |
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5 | |
6 | BEGIN { extends 'Catalyst::Controller' } |
7 | |
8 | |
9 | =head1 NAME |
10 | |
11 | stemmaweb::Controller::Relation - Controller for the relationship mapper |
12 | |
13 | =head1 DESCRIPTION |
14 | |
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15 | The reading relationship mapper with draggable nodes. |
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16 | |
17 | =head1 METHODS |
18 | |
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19 | =head2 index |
20 | |
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21 | GET relation/$textid |
22 | |
23 | Renders the application for the text identified by $textid. |
24 | |
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25 | =cut |
26 | |
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27 | sub index :Path :Args(0) { |
28 | my( $self, $c ) = @_; |
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29 | $c->stash->{'template'} = 'relate.tt'; |
30 | } |
31 | |
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32 | =head2 help |
33 | |
34 | GET relation/help |
35 | |
36 | Returns the help window HTML. |
37 | |
38 | =cut |
39 | |
40 | sub help :Local :Args(0) { |
41 | my( $self, $c ) = @_; |
42 | $c->stash->{'template'} = 'relatehelp.tt'; |
43 | } |
44 | |
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45 | =head2 definitions |
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46 | |
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47 | GET relation/definitions |
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48 | |
49 | Returns a data structure giving the valid types and scopes for a relationship. |
50 | |
51 | =cut |
52 | |
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53 | sub definitions :Local :Args(0) { |
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54 | my( $self, $c ) = @_; |
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55 | my $valid_relationships = [ qw/ spelling orthographic grammatical meaning |
56 | lexical transposition / ]; |
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57 | my $valid_scopes = [ qw/ local global / ]; |
58 | $c->stash->{'result'} = { 'types' => $valid_relationships, 'scopes' => $valid_scopes }; |
59 | $c->forward('View::JSON'); |
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60 | } |
61 | |
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62 | =head2 text |
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63 | |
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64 | GET relation/$textid/ |
65 | |
66 | Runs the relationship mapper for the specified text ID. |
67 | |
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68 | =cut |
69 | |
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70 | sub text :Chained('/') :PathPart('relation') :CaptureArgs(1) { |
71 | my( $self, $c, $textid ) = @_; |
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72 | # If the tradition has more than 500 ranks or so, split it up. |
73 | my $tradition = $c->model('Directory')->tradition( $textid ); |
74 | my $length = $tradition->collation->end->rank; |
75 | if( $length > 700 ) { |
76 | # Segment the tradition in order not to overload the browser. |
77 | # Split it up into units of 500 ranks, but have each segment show |
78 | # 550 ranks so that overlap works. |
79 | my @divs; |
80 | my $r = 0; |
81 | while( $r + 50 < $length ) { |
82 | push( @divs, $r ); |
83 | $r += 500; |
84 | } |
85 | $c->stash->{'textsegments'} = []; |
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86 | foreach my $i ( 0..$#divs ) { |
87 | my $seg = { 'start' => $divs[$i] }; |
88 | $seg->{'display'} = "Segment " . ($i+1); |
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89 | push( @{$c->stash->{'textsegments'}}, $seg ); |
90 | } |
91 | } |
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92 | $DB::single = 1; |
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93 | $c->stash->{'textid'} = $textid; |
94 | $c->stash->{'tradition'} = $tradition; |
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95 | } |
96 | |
97 | sub main :Chained('text') :PathPart('') :Args(0) { |
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98 | my( $self, $c ) = @_; |
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99 | my $startseg = $c->req->param('start'); |
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100 | my $tradition = delete $c->stash->{'tradition'}; |
101 | my $collation = $tradition->collation; |
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102 | my $svgopts; |
103 | if( $startseg ) { |
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104 | # Only render the subgraph from startseg to +550 or end, |
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105 | # whichever is less. |
106 | $svgopts = { 'from' => $startseg }; |
107 | $svgopts->{'to'} = $startseg + 550 |
108 | if $startseg + 550 < $collation->end->rank; |
109 | } elsif( exists $c->stash->{'textsegments'} ) { |
110 | # This is the unqualified load of a long tradition. We implicitly start |
111 | # at zero, but go only as far as 550. |
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112 | $startseg = 0; |
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113 | $svgopts = { 'to' => 550 }; |
114 | } |
115 | my $svg_str = $collation->as_svg( $svgopts ); |
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116 | $svg_str =~ s/\n//gs; |
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117 | $c->stash->{'startseg'} = $startseg if defined $startseg; |
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118 | $c->stash->{'svg_string'} = $svg_str; |
119 | $c->stash->{'text_title'} = $tradition->name; |
120 | $c->stash->{'template'} = 'relate.tt'; |
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121 | } |
122 | |
123 | =head2 relationships |
124 | |
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125 | GET relation/$textid/relationships |
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126 | |
127 | Returns the list of relationships defined for this text. |
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128 | |
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129 | POST relation/$textid/relationships { request } |
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130 | |
131 | Attempts to define the requested relationship within the text. Returns 200 on |
132 | success or 403 on error. |
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133 | |
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134 | DELETE relation/$textid/relationships { request } |
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135 | |
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136 | |
137 | =cut |
138 | |
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139 | sub relationships :Chained('text') :PathPart :Args(0) { |
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140 | my( $self, $c ) = @_; |
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141 | my $tradition = delete $c->stash->{'tradition'}; |
142 | my $collation = $tradition->collation; |
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143 | my $m = $c->model('Directory'); |
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144 | if( $c->request->method eq 'GET' ) { |
145 | my @pairs = $collation->relationships; # returns the edges |
146 | my @all_relations; |
147 | foreach my $p ( @pairs ) { |
148 | my $relobj = $collation->relations->get_relationship( @$p ); |
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149 | next if $relobj->type eq 'collated'; # Don't show these |
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150 | my $relhash = { source => $p->[0], target => $p->[1], |
151 | type => $relobj->type, scope => $relobj->scope }; |
152 | $relhash->{'note'} = $relobj->annotation if $relobj->has_annotation; |
153 | push( @all_relations, $relhash ); |
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154 | } |
155 | $c->stash->{'result'} = \@all_relations; |
156 | } elsif( $c->request->method eq 'POST' ) { |
157 | my $node = $c->request->param('source_id'); |
158 | my $target = $c->request->param('target_id'); |
159 | my $relation = $c->request->param('rel_type'); |
160 | my $note = $c->request->param('note'); |
161 | my $scope = $c->request->param('scope'); |
162 | |
163 | my $opts = { 'type' => $relation, |
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164 | 'scope' => $scope }; |
165 | $opts->{'annotation'} = $note if $note; |
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166 | |
167 | try { |
168 | my @vectors = $collation->add_relationship( $node, $target, $opts ); |
169 | $c->stash->{'result'} = \@vectors; |
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170 | $m->save( $tradition ); |
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171 | } catch( Text::Tradition::Error $e ) { |
172 | $c->response->status( '403' ); |
173 | $c->stash->{'result'} = { 'error' => $e->message }; |
174 | } |
175 | } elsif( $c->request->method eq 'DELETE' ) { |
176 | my $node = $c->request->param('source_id'); |
177 | my $target = $c->request->param('target_id'); |
178 | |
179 | try { |
180 | my @vectors = $collation->del_relationship( $node, $target ); |
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181 | $m->save( $tradition ); |
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182 | $c->stash->{'result'} = \@vectors; |
183 | } catch( Text::Tradition::Error $e ) { |
184 | $c->response->status( '403' ); |
185 | $c->stash->{'result'} = { 'error' => $e->message }; |
186 | } |
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187 | } |
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188 | $c->forward('View::JSON'); |
189 | } |
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190 | |
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191 | |
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192 | =head2 end |
193 | |
194 | Attempt to render a view, if needed. |
195 | |
196 | =cut |
197 | |
198 | sub end : ActionClass('RenderView') {} |
199 | |
200 | =head1 AUTHOR |
201 | |
202 | Tara L Andrews |
203 | |
204 | =head1 LICENSE |
205 | |
206 | This library is free software. You can redistribute it and/or modify |
207 | it under the same terms as Perl itself. |
208 | |
209 | =cut |
210 | |
211 | __PACKAGE__->meta->make_immutable; |
212 | |
213 | 1; |