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1 | package Text::Tradition::Collation::RelationshipStore; |
2 | |
3 | use strict; |
4 | use warnings; |
63778331 |
5 | use Text::Tradition::Error; |
22222af9 |
6 | use Text::Tradition::Collation::Relationship; |
a1615ee4 |
7 | use TryCatch; |
22222af9 |
8 | |
9 | use Moose; |
10 | |
11 | =head1 NAME |
12 | |
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13 | Text::Tradition::Collation::RelationshipStore - Keeps track of the relationships |
14 | between readings in a given collation |
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15 | |
16 | =head1 DESCRIPTION |
17 | |
18 | Text::Tradition is a library for representation and analysis of collated |
19 | texts, particularly medieval ones. The RelationshipStore is an internal object |
20 | of the collation, to keep track of the defined relationships (both specific and |
21 | general) between readings. |
22 | |
3ae5e2ad |
23 | =begin testing |
24 | |
25 | use Text::Tradition; |
ee801e17 |
26 | use TryCatch; |
3ae5e2ad |
27 | |
28 | use_ok( 'Text::Tradition::Collation::RelationshipStore' ); |
29 | |
ee801e17 |
30 | # Add some relationships, and delete them |
31 | |
32 | my $cxfile = 't/data/Collatex-16.xml'; |
33 | my $t = Text::Tradition->new( |
34 | 'name' => 'inline', |
35 | 'input' => 'CollateX', |
36 | 'file' => $cxfile, |
37 | ); |
38 | my $c = $t->collation; |
39 | |
f8331a4d |
40 | my @v1 = $c->add_relationship( 'n21', 'n22', { 'type' => 'lexical' } ); |
ee801e17 |
41 | is( scalar @v1, 1, "Added a single relationship" ); |
42 | is( $v1[0]->[0], 'n21', "Got correct node 1" ); |
43 | is( $v1[0]->[1], 'n22', "Got correct node 2" ); |
679f17e1 |
44 | my @v2 = $c->add_relationship( 'n24', 'n23', |
ee801e17 |
45 | { 'type' => 'spelling', 'scope' => 'global' } ); |
46 | is( scalar @v2, 2, "Added a global relationship with two instances" ); |
47 | @v1 = $c->del_relationship( 'n22', 'n21' ); |
48 | is( scalar @v1, 1, "Deleted first relationship" ); |
679f17e1 |
49 | @v2 = $c->del_relationship( 'n12', 'n13' ); |
ee801e17 |
50 | is( scalar @v2, 2, "Deleted second global relationship" ); |
681893aa |
51 | my @v3 = $c->del_relationship( 'n1', 'n2' ); |
52 | is( scalar @v3, 0, "Nothing deleted on non-existent relationship" ); |
ee801e17 |
53 | |
3ae5e2ad |
54 | =end testing |
55 | |
22222af9 |
56 | =head1 METHODS |
57 | |
58 | =head2 new( collation => $collation ); |
59 | |
60 | Creates a new relationship store for the given collation. |
61 | |
62 | =cut |
63 | |
64 | has 'collation' => ( |
65 | is => 'ro', |
66 | isa => 'Text::Tradition::Collation', |
67 | required => 1, |
68 | weak_ref => 1, |
69 | ); |
70 | |
71 | has 'scopedrels' => ( |
72 | is => 'ro', |
73 | isa => 'HashRef[HashRef[Text::Tradition::Collation::Relationship]]', |
74 | default => sub { {} }, |
75 | ); |
76 | |
77 | has 'graph' => ( |
78 | is => 'ro', |
79 | isa => 'Graph', |
80 | default => sub { Graph->new( undirected => 1 ) }, |
81 | handles => { |
82 | relationships => 'edges', |
83 | add_reading => 'add_vertex', |
84 | delete_reading => 'delete_vertex', |
85 | }, |
86 | ); |
87 | |
3ae5e2ad |
88 | =head2 get_relationship |
89 | |
90 | Return the relationship object, if any, that exists between two readings. |
91 | |
92 | =cut |
93 | |
94 | sub get_relationship { |
4633f9e4 |
95 | my $self = shift; |
96 | my @vector; |
97 | if( @_ == 1 && ref( $_[0] ) eq 'ARRAY' ) { |
98 | # Dereference the edge arrayref that was passed. |
99 | my $edge = shift; |
100 | @vector = @$edge; |
101 | } else { |
102 | @vector = @_; |
103 | } |
3ae5e2ad |
104 | my $relationship; |
105 | if( $self->graph->has_edge_attribute( @vector, 'object' ) ) { |
106 | $relationship = $self->graph->get_edge_attribute( @vector, 'object' ); |
ca6e6095 |
107 | } |
3ae5e2ad |
108 | return $relationship; |
109 | } |
110 | |
111 | sub _set_relationship { |
112 | my( $self, $relationship, @vector ) = @_; |
113 | $self->graph->add_edge( @vector ); |
114 | $self->graph->set_edge_attribute( @vector, 'object', $relationship ); |
115 | } |
a1615ee4 |
116 | |
22222af9 |
117 | =head2 create |
118 | |
119 | Create a new relationship with the given options and return it. |
120 | Warn and return undef if the relationship cannot be created. |
121 | |
122 | =cut |
123 | |
124 | sub create { |
125 | my( $self, $options ) = @_; |
126 | # Check to see if a relationship exists between the two given readings |
127 | my $source = delete $options->{'orig_a'}; |
128 | my $target = delete $options->{'orig_b'}; |
3ae5e2ad |
129 | my $rel = $self->get_relationship( $source, $target ); |
130 | if( $rel ) { |
3d14b48e |
131 | if( $rel->type eq 'collated' ) { |
132 | # Always replace a 'collated' relationship with a more descriptive |
133 | # one, if asked. |
134 | $self->del_relationship( $source, $target ); |
135 | } elsif( $rel->type ne $options->{'type'} ) { |
63778331 |
136 | throw( "Another relationship of type " . $rel->type |
137 | . " already exists between $source and $target" ); |
22222af9 |
138 | } else { |
139 | return $rel; |
140 | } |
141 | } |
142 | |
143 | # Check to see if a nonlocal relationship is defined for the two readings |
144 | $rel = $self->scoped_relationship( $options->{'reading_a'}, |
145 | $options->{'reading_b'} ); |
146 | if( $rel && $rel->type eq $options->{'type'} ) { |
147 | return $rel; |
148 | } elsif( $rel ) { |
63778331 |
149 | throw( sprintf( "Relationship of type %s with scope %s already defined for readings %s and %s", $rel->type, $rel->scope, $options->{'reading_a'}, $options->{'reading_b'} ) ); |
22222af9 |
150 | } else { |
151 | $rel = Text::Tradition::Collation::Relationship->new( $options ); |
152 | $self->add_scoped_relationship( $rel ) if $rel->nonlocal; |
153 | return $rel; |
154 | } |
155 | } |
156 | |
157 | =head2 add_scoped_relationship( $rel ) |
158 | |
159 | Keep track of relationships defined between specific readings that are scoped |
160 | non-locally. Key on whichever reading occurs first alphabetically. |
161 | |
162 | =cut |
163 | |
164 | sub add_scoped_relationship { |
165 | my( $self, $rel ) = @_; |
f222800e |
166 | my $rdga = $rel->type eq 'orthographic' ? $rel->reading_a : lc( $rel->reading_a ); |
167 | my $rdgb = $rel->type eq 'orthographic' ? $rel->reading_b : lc( $rel->reading_b ); |
168 | my $r = $self->scoped_relationship( $rdga, $rdgb ); |
22222af9 |
169 | if( $r ) { |
170 | warn sprintf( "Scoped relationship of type %s already exists between %s and %s", |
f222800e |
171 | $r->type, $rdga, $rdgb ); |
22222af9 |
172 | return; |
173 | } |
f222800e |
174 | my( $first, $second ) = sort ( $rdga, $rdgb ); |
175 | $self->scopedrels->{$first}->{$second} = $rel; |
22222af9 |
176 | } |
177 | |
178 | =head2 scoped_relationship( $reading_a, $reading_b ) |
179 | |
180 | Returns the general (document-level or global) relationship that has been defined |
181 | between the two reading strings. Returns undef if there is no general relationship. |
182 | |
183 | =cut |
184 | |
185 | sub scoped_relationship { |
186 | my( $self, $rdga, $rdgb ) = @_; |
187 | my( $first, $second ) = sort( $rdga, $rdgb ); |
188 | if( exists $self->scopedrels->{$first}->{$second} ) { |
189 | return $self->scopedrels->{$first}->{$second}; |
190 | } else { |
191 | return undef; |
192 | } |
193 | } |
194 | |
195 | =head2 add_relationship( $self, $source, $sourcetext, $target, $targettext, $opts ) |
196 | |
197 | Adds the relationship specified in $opts (see Text::Tradition::Collation::Relationship |
198 | for the possible options) between the readings given in $source and $target. Sets |
199 | up a scoped relationship between $sourcetext and $targettext if the relationship is |
200 | scoped non-locally. |
201 | |
202 | Returns a status boolean and a list of all reading pairs connected by the call to |
203 | add_relationship. |
204 | |
205 | =cut |
206 | |
207 | sub add_relationship { |
208 | my( $self, $source, $source_rdg, $target, $target_rdg, $options ) = @_; |
209 | |
ca6e6095 |
210 | my $relationship; |
211 | my $thispaironly; |
212 | if( ref( $options ) eq 'Text::Tradition::Collation::Relationship' ) { |
213 | $relationship = $options; |
214 | $thispaironly = 1; # If existing rel, set only where asked. |
215 | } else { |
216 | # Check the options |
217 | $options->{'scope'} = 'local' unless $options->{'scope'}; |
bf6e338d |
218 | $options->{'scope'} = 'local' if $options->{'type'} eq 'collated'; |
ca6e6095 |
219 | |
220 | my( $is_valid, $reason ) = |
221 | $self->relationship_valid( $source, $target, $options->{'type'} ); |
222 | unless( $is_valid ) { |
223 | throw( "Invalid relationship: $reason" ); |
224 | } |
225 | |
226 | # Try to create the relationship object. |
227 | $options->{'reading_a'} = $source_rdg->text; |
228 | $options->{'reading_b'} = $target_rdg->text; |
229 | $options->{'orig_a'} = $source; |
230 | $options->{'orig_b'} = $target; |
0ac5e750 |
231 | if( $options->{'scope'} ne 'local' ) { |
232 | # Is there a relationship with this a & b already? |
f222800e |
233 | # Case-insensitive for non-orthographics. |
234 | my $rdga = $options->{'type'} eq 'orthographic' |
235 | ? $options->{'reading_a'} : lc( $options->{'reading_a'} ); |
236 | my $rdgb = $options->{'type'} eq 'orthographic' |
237 | ? $options->{'reading_b'} : lc( $options->{'reading_b'} ); |
238 | my $otherrel = $self->scoped_relationship( $rdga, $rdgb ); |
0ac5e750 |
239 | if( $otherrel && $otherrel->type eq $options->{type} |
240 | && $otherrel->scope eq $options->{scope} ) { |
241 | warn "Applying existing scoped relationship"; |
242 | $relationship = $otherrel; |
243 | } |
244 | } |
245 | $relationship = $self->create( $options ) unless $relationship; # Will throw on error |
22222af9 |
246 | } |
ca6e6095 |
247 | |
22222af9 |
248 | |
249 | # Find all the pairs for which we need to set the relationship. |
bf6e338d |
250 | my @vectors = [ $source, $target ]; |
ca6e6095 |
251 | if( $relationship->colocated && $relationship->nonlocal && !$thispaironly ) { |
bf6e338d |
252 | push( @vectors, $self->_find_applicable( $relationship ) ); |
f222800e |
253 | } |
bf6e338d |
254 | |
22222af9 |
255 | # Now set the relationship(s). |
256 | my @pairs_set; |
257 | foreach my $v ( @vectors ) { |
3ae5e2ad |
258 | my $rel = $self->get_relationship( @$v ); |
ca6e6095 |
259 | if( $rel && $rel ne $relationship ) { |
63778331 |
260 | if( $rel->nonlocal ) { |
261 | throw( "Found conflicting relationship at @$v" ); |
a2ed66b2 |
262 | } elsif( $rel->type ne 'collated' ) { |
263 | # Replace a collation relationship; leave any other sort in place. |
63778331 |
264 | warn "Not overriding local relationship set at @$v"; |
a2ed66b2 |
265 | next; |
63778331 |
266 | } |
22222af9 |
267 | } |
3ae5e2ad |
268 | $self->_set_relationship( $relationship, @$v ); |
22222af9 |
269 | push( @pairs_set, $v ); |
270 | } |
271 | |
63778331 |
272 | return @pairs_set; |
22222af9 |
273 | } |
274 | |
bf6e338d |
275 | sub _find_applicable { |
276 | my( $self, $rel ) = @_; |
277 | my $c = $self->collation; |
278 | # TODO Someday we might use a case sensitive language. |
279 | my $lang = $c->tradition->language; |
280 | my @vectors; |
281 | my @identical_readings; |
282 | if( $rel->type eq 'orthographic' ) { |
283 | @identical_readings = grep { $_->text eq $rel->reading_a } |
284 | $c->readings; |
285 | } else { |
286 | @identical_readings = grep { lc( $_->text ) eq lc( $rel->reading_a ) } |
287 | $c->readings; |
288 | } |
289 | foreach my $ir ( @identical_readings ) { |
290 | my @itarget; |
291 | if( $rel->type eq 'orthographic' ) { |
292 | @itarget = grep { $_->rank == $ir->rank |
293 | && $_->text eq $rel->reading_b } $c->readings; |
294 | } else { |
295 | @itarget = grep { $_->rank == $ir->rank |
296 | && lc( $_->text ) eq lc( $rel->reading_b ) } $c->readings; |
297 | } |
298 | if( @itarget ) { |
299 | # Warn if there is more than one hit with no orth link between them. |
300 | my $itmain = shift @itarget; |
301 | if( @itarget ) { |
302 | my %all_targets; |
303 | map { $all_targets{$_} = 1 } @itarget; |
304 | map { delete $all_targets{$_} } |
305 | $self->related_readings( $itmain, |
306 | sub { $_[0]->type eq 'orthographic' } ); |
307 | warn "More than one unrelated reading with text " . $itmain->text |
308 | . " at rank " . $ir->rank . "!" if keys %all_targets; |
309 | } |
310 | push( @vectors, [ $ir->id, $itmain->id ] ); |
311 | } |
312 | } |
313 | return @vectors; |
314 | } |
315 | |
ee801e17 |
316 | =head2 del_relationship( $source, $target ) |
317 | |
318 | Removes the relationship between the given readings. If the relationship is |
319 | non-local, removes the relationship everywhere in the graph. |
320 | |
321 | =cut |
322 | |
323 | sub del_relationship { |
324 | my( $self, $source, $target ) = @_; |
325 | my $rel = $self->get_relationship( $source, $target ); |
681893aa |
326 | return () unless $rel; # Nothing to delete; return an empty set. |
ee801e17 |
327 | my @vectors = ( [ $source, $target ] ); |
328 | $self->_remove_relationship( $source, $target ); |
329 | if( $rel->nonlocal ) { |
330 | # Remove the relationship wherever it occurs. |
331 | my @rel_edges = grep { $self->get_relationship( @$_ ) == $rel } |
332 | $self->relationships; |
333 | foreach my $re ( @rel_edges ) { |
334 | $self->_remove_relationship( @$re ); |
335 | push( @vectors, $re ); |
336 | } |
337 | } |
338 | return @vectors; |
339 | } |
340 | |
ca6e6095 |
341 | sub _remove_relationship { |
342 | my( $self, @vector ) = @_; |
343 | $self->graph->delete_edge( @vector ); |
344 | } |
345 | |
22222af9 |
346 | =head2 relationship_valid( $source, $target, $type ) |
347 | |
348 | Checks whether a relationship of type $type may exist between the readings given |
349 | in $source and $target. Returns a tuple of ( status, message ) where status is |
350 | a yes/no boolean and, if the answer is no, message gives the reason why. |
351 | |
352 | =cut |
353 | |
354 | sub relationship_valid { |
355 | my( $self, $source, $target, $rel ) = @_; |
356 | my $c = $self->collation; |
357 | if ( $rel eq 'transposition' || $rel eq 'repetition' ) { |
358 | # Check that the two readings do (for a repetition) or do not (for |
359 | # a transposition) appear in the same witness. |
32e95735 |
360 | # TODO this might be called before witness paths are set... |
22222af9 |
361 | my %seen_wits; |
362 | map { $seen_wits{$_} = 1 } $c->reading_witnesses( $source ); |
363 | foreach my $w ( $c->reading_witnesses( $target ) ) { |
364 | if( $seen_wits{$w} ) { |
365 | return ( 0, "Readings both occur in witness $w" ) |
366 | if $rel eq 'transposition'; |
367 | return ( 1, "ok" ) if $rel eq 'repetition'; |
368 | } |
369 | return $rel eq 'transposition' ? ( 1, "ok" ) |
370 | : ( 0, "Readings occur only in distinct witnesses" ); |
371 | } |
372 | } else { |
373 | # Check that linking the source and target in a relationship won't lead |
a1615ee4 |
374 | # to a path loop for any witness. If they have the same rank then fine. |
375 | return( 1, "ok" ) |
84d4ca78 |
376 | if $c->reading( $source )->has_rank |
377 | && $c->reading( $target )->has_rank |
378 | && $c->reading( $source )->rank == $c->reading( $target )->rank; |
a1615ee4 |
379 | |
380 | # Otherwise, first make a lookup table of all the |
22222af9 |
381 | # readings related to either the source or the target. |
382 | my @proposed_related = ( $source, $target ); |
778251a6 |
383 | # Drop the collation links of source and target, unless we want to |
384 | # add a collation relationship. |
385 | foreach my $r ( ( $source, $target ) ) { |
386 | $self->_drop_collations( $r ) unless $rel eq 'collated'; |
387 | push( @proposed_related, $self->related_readings( $r, 'colocated' ) ); |
388 | } |
22222af9 |
389 | my %pr_ids; |
390 | map { $pr_ids{ $_ } = 1 } @proposed_related; |
391 | |
a1615ee4 |
392 | # The cumulative predecessors and successors of the proposed-related readings |
393 | # should not overlap. |
394 | my %all_pred; |
395 | my %all_succ; |
22222af9 |
396 | foreach my $pr ( keys %pr_ids ) { |
a1615ee4 |
397 | map { $all_pred{$_} = 1 } $c->sequence->all_predecessors( $pr ); |
398 | map { $all_succ{$_} = 1 } $c->sequence->all_successors( $pr ); |
399 | } |
400 | foreach my $k ( keys %all_pred ) { |
401 | return( 0, "Relationship would create witness loop" ) |
402 | if exists $all_succ{$k}; |
403 | } |
404 | foreach my $k ( keys %pr_ids ) { |
405 | return( 0, "Relationship would create witness loop" ) |
406 | if exists $all_pred{$k} || exists $all_succ{$k}; |
407 | } |
22222af9 |
408 | return ( 1, "ok" ); |
409 | } |
410 | } |
411 | |
778251a6 |
412 | sub _drop_collations { |
413 | my( $self, $reading ) = @_; |
414 | foreach my $n ( $self->graph->neighbors( $reading ) ) { |
415 | if( $self->get_relationship( $reading, $n )->type eq 'collated' ) { |
416 | $self->del_relationship( $reading, $n ); |
417 | } |
418 | } |
419 | } |
420 | |
7f52eac8 |
421 | =head2 related_readings( $reading, $filter ) |
22222af9 |
422 | |
423 | Returns a list of readings that are connected via relationship links to $reading. |
7f52eac8 |
424 | If $filter is set to a subroutine ref, returns only those related readings where |
425 | $filter( $relationship ) returns a true value. |
22222af9 |
426 | |
427 | =cut |
428 | |
429 | sub related_readings { |
7f52eac8 |
430 | my( $self, $reading, $filter ) = @_; |
22222af9 |
431 | my $return_object; |
432 | if( ref( $reading ) eq 'Text::Tradition::Collation::Reading' ) { |
433 | $reading = $reading->id; |
434 | $return_object = 1; |
435 | } |
c84275ff |
436 | my @answer; |
7f52eac8 |
437 | if( $filter ) { |
438 | # Backwards compat |
439 | if( $filter eq 'colocated' ) { |
440 | $filter = sub { $_[0]->colocated }; |
441 | } |
c84275ff |
442 | my %found = ( $reading => 1 ); |
443 | my $check = [ $reading ]; |
444 | my $iter = 0; |
445 | while( @$check ) { |
c84275ff |
446 | my $more = []; |
447 | foreach my $r ( @$check ) { |
448 | foreach my $nr ( $self->graph->neighbors( $r ) ) { |
7f52eac8 |
449 | if( &$filter( $self->get_relationship( $r, $nr ) ) ) { |
c84275ff |
450 | push( @$more, $nr ) unless exists $found{$nr}; |
451 | $found{$nr} = 1; |
452 | } |
453 | } |
454 | } |
455 | $check = $more; |
22222af9 |
456 | } |
7f52eac8 |
457 | delete $found{$reading}; |
c84275ff |
458 | @answer = keys %found; |
459 | } else { |
460 | @answer = $self->graph->all_reachable( $reading ); |
22222af9 |
461 | } |
462 | if( $return_object ) { |
463 | my $c = $self->collation; |
c84275ff |
464 | return map { $c->reading( $_ ) } @answer; |
22222af9 |
465 | } else { |
c84275ff |
466 | return @answer; |
22222af9 |
467 | } |
468 | } |
469 | |
470 | =head2 merge_readings( $kept, $deleted ); |
471 | |
472 | Makes a best-effort merge of the relationship links between the given readings, and |
473 | stops tracking the to-be-deleted reading. |
474 | |
475 | =cut |
476 | |
477 | sub merge_readings { |
478 | my( $self, $kept, $deleted, $combined ) = @_; |
479 | foreach my $edge ( $self->graph->edges_at( $deleted ) ) { |
480 | # Get the pair of kept / rel |
481 | my @vector = ( $kept ); |
482 | push( @vector, $edge->[0] eq $deleted ? $edge->[1] : $edge->[0] ); |
483 | next if $vector[0] eq $vector[1]; # Don't add a self loop |
484 | |
485 | # If kept changes its text, drop the relationship. |
486 | next if $combined; |
487 | |
f222800e |
488 | # If kept / rel already has a relationship, just keep the old |
3ae5e2ad |
489 | my $rel = $self->get_relationship( @vector ); |
f222800e |
490 | next if $rel; |
22222af9 |
491 | |
492 | # Otherwise, adopt the relationship that would be deleted. |
3ae5e2ad |
493 | $rel = $self->get_relationship( @$edge ); |
494 | $self->_set_relationship( $rel, @vector ); |
22222af9 |
495 | } |
496 | $self->delete_reading( $deleted ); |
497 | } |
498 | |
027d819c |
499 | sub _as_graphml { |
2626f709 |
500 | my( $self, $graphml_ns, $xmlroot, $node_hash, $nodeid_key, $edge_keys ) = @_; |
c84275ff |
501 | |
502 | my $rgraph = $xmlroot->addNewChild( $graphml_ns, 'graph' ); |
503 | $rgraph->setAttribute( 'edgedefault', 'directed' ); |
504 | $rgraph->setAttribute( 'id', 'relationships', ); |
505 | $rgraph->setAttribute( 'parse.edgeids', 'canonical' ); |
506 | $rgraph->setAttribute( 'parse.edges', scalar($self->graph->edges) ); |
507 | $rgraph->setAttribute( 'parse.nodeids', 'canonical' ); |
508 | $rgraph->setAttribute( 'parse.nodes', scalar($self->graph->vertices) ); |
509 | $rgraph->setAttribute( 'parse.order', 'nodesfirst' ); |
510 | |
511 | # Add the vertices according to their XML IDs |
2626f709 |
512 | my %rdg_lookup = ( reverse %$node_hash ); |
513 | foreach my $n ( sort _by_xmlid keys( %rdg_lookup ) ) { |
c84275ff |
514 | my $n_el = $rgraph->addNewChild( $graphml_ns, 'node' ); |
515 | $n_el->setAttribute( 'id', $n ); |
2626f709 |
516 | _add_graphml_data( $n_el, $nodeid_key, $rdg_lookup{$n} ); |
c84275ff |
517 | } |
518 | |
519 | # Add the relationship edges, with their object information |
520 | my $edge_ctr = 0; |
521 | foreach my $e ( sort { $a->[0] cmp $b->[0] } $self->graph->edges ) { |
522 | # Add an edge and fill in its relationship info. |
523 | my $edge_el = $rgraph->addNewChild( $graphml_ns, 'edge' ); |
524 | $edge_el->setAttribute( 'source', $node_hash->{$e->[0]} ); |
525 | $edge_el->setAttribute( 'target', $node_hash->{$e->[1]} ); |
526 | $edge_el->setAttribute( 'id', 'e'.$edge_ctr++ ); |
527 | |
3ae5e2ad |
528 | my $rel_obj = $self->get_relationship( @$e ); |
bbd064a9 |
529 | foreach my $key ( keys %$edge_keys ) { |
530 | my $value = $rel_obj->$key; |
531 | _add_graphml_data( $edge_el, $edge_keys->{$key}, $value ) |
532 | if defined $value; |
533 | } |
c84275ff |
534 | } |
535 | } |
536 | |
537 | sub _by_xmlid { |
2626f709 |
538 | my $tmp_a = $a; |
539 | my $tmp_b = $b; |
540 | $tmp_a =~ s/\D//g; |
541 | $tmp_b =~ s/\D//g; |
542 | return $tmp_a <=> $tmp_b; |
c84275ff |
543 | } |
544 | |
545 | sub _add_graphml_data { |
546 | my( $el, $key, $value ) = @_; |
547 | return unless defined $value; |
548 | my $data_el = $el->addNewChild( $el->namespaceURI, 'data' ); |
549 | $data_el->setAttribute( 'key', $key ); |
550 | $data_el->appendText( $value ); |
83d5ac3a |
551 | } |
552 | |
63778331 |
553 | sub throw { |
554 | Text::Tradition::Error->throw( |
555 | 'ident' => 'Relationship error', |
556 | 'message' => $_[0], |
557 | ); |
558 | } |
559 | |
22222af9 |
560 | no Moose; |
561 | __PACKAGE__->meta->make_immutable; |
562 | |
563 | 1; |