Class: Alexandria::BookProviders
- Inherits:
-
Array
- Object
- Array
- Alexandria::BookProviders
- Includes:
- Logging, GetText, Observable, Singleton
- Defined in:
- lib/alexandria/book_providers.rb,
lib/alexandria/book_providers/mcu.rb,
lib/alexandria/book_providers/web.rb,
lib/alexandria/book_providers/z3950.rb,
lib/alexandria/book_providers/douban.rb,
lib/alexandria/book_providers/proxis.rb,
lib/alexandria/book_providers/renaud.rb,
lib/alexandria/book_providers/thalia.rb,
lib/alexandria/book_providers/adlibris.rb,
lib/alexandria/book_providers/deastore.rb,
lib/alexandria/book_providers/worldcat.rb,
lib/alexandria/book_providers/siciliano.rb,
lib/alexandria/book_providers/amazon_aws.rb,
lib/alexandria/book_providers/barnes_and_noble.rb
Overview
FIXME: Use delegation instead of inheritance.
Defined Under Namespace
Classes: AbstractProvider, AdLibrisProvider, AmazonProvider, BLProvider, BarnesAndNobleProvider, DeaStoreProvider, DoubanProvider, GenericProvider, InvalidSearchTypeError, LOCProvider, MCUProvider, NoResultsError, Preferences, ProviderSkippedError, ProxisProvider, RENAUDProvider, SBNProvider, SearchEmptyError, SearchError, SicilianoProvider, ThaliaProvider, TooManyResultsError, WebsiteBasedProvider, WorldCatProvider, Z3950Provider
Instance Attribute Summary collapse
-
#abstract_classes ⇒ Object
readonly
Returns the value of attribute abstract_classes.
Class Method Summary collapse
- .isbn_search(criterion) ⇒ Object
-
.method_missing(id, *args, &block) ⇒ Object
FIXME: Define the handful of methods that use this.
- .search(criterion, type) ⇒ Object
Instance Method Summary collapse
-
#initialize ⇒ BookProviders
constructor
A new instance of BookProviders.
- #update_priority ⇒ Object
Methods included from Logging
Constructor Details
#initialize ⇒ BookProviders
Returns a new instance of BookProviders.
315 316 317 318 319 |
# File 'lib/alexandria/book_providers.rb', line 315 def initialize @prefs = Alexandria::Preferences.instance @abstract_classes = [] update_priority end |
Instance Attribute Details
#abstract_classes ⇒ Object (readonly)
Returns the value of attribute abstract_classes.
313 314 315 |
# File 'lib/alexandria/book_providers.rb', line 313 def abstract_classes @abstract_classes end |
Class Method Details
.isbn_search(criterion) ⇒ Object
125 126 127 |
# File 'lib/alexandria/book_providers.rb', line 125 def self.isbn_search(criterion) search(criterion, SEARCH_BY_ISBN) end |
.method_missing(id, *args, &block) ⇒ Object
FIXME: Define the handful of methods that use this.
371 372 373 374 375 376 377 |
# File 'lib/alexandria/book_providers.rb', line 371 def self.method_missing(id, *args, &block) if instance.respond_to? id instance.method(id).call(*args, &block) else super end end |
.search(criterion, type) ⇒ Object
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 |
# File 'lib/alexandria/book_providers.rb', line 44 def self.search(criterion, type) factory_n = 0 # puts "book_providers search #{self.instance.count_observers}" begin factory = instance[factory_n] puts factory.fullname + ' lookup' if $DEBUG unless factory.enabled puts factory.fullname + ' disabled!, skipping...' if $DEBUG raise ProviderSkippedError end instance.changed instance.notify_observers(:searching, factory.fullname) # new results = factory.search(criterion, type) # sanity check if at least one valid result is actually found results.delete_if { |book, _cover| book.nil? } if results.empty? instance.changed instance.notify_observers(:not_found, factory.fullname) # new raise NoResultsError else log.info { 'found at ' + factory.fullname } instance.changed instance.notify_observers(:found, factory.fullname) # new return results end rescue => boom if boom.is_a? NoResultsError unless boom.instance_of? ProviderSkippedError instance.changed instance.notify_observers(:not_found, factory.fullname) # new Thread.new { sleep(0.5) }.join end else instance.changed instance.notify_observers(:error, factory.fullname) # new Thread.new { sleep(0.5) }.join # hrmmmm, to make readable... trace = boom.backtrace.join("\n >") log.warn { "Provider #{factory.name} encountered error: #{boom.} #{trace}" } end if last == factory log.warn { "Error while searching #{criterion}" } = case boom when Timeout::Error _("Couldn't reach the provider '%s': timeout " \ 'expired.') % factory.name when SocketError format(_("Couldn't reach the provider '%s': socket " \ 'error (%s).'), factory.name, boom.) when NoResultsError _('No results were found. Make sure your ' \ 'search criterion is spelled correctly, and ' \ 'try again.') when ProviderSkippedError _('No results were found. Make sure your ' \ 'search criterion is spelled correctly, and ' \ 'try again.') when TooManyResultsError _('Too many results for that search.') when InvalidSearchTypeError _('Invalid search type.') else boom. end puts "raising empty error #{}" raise SearchEmptyError, else factory_n += 1 retry end end end |
Instance Method Details
#update_priority ⇒ Object
321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 |
# File 'lib/alexandria/book_providers.rb', line 321 def update_priority # This is weird code that sorts through the list of classes brought # in by requires and sorts through whether they are 'Abstract' or not, # adding their names to @prefs. @abstract_classes.clear providers = {} self.class.constants.each do |constant| md = /(.+)Provider$/.match(constant) next unless md klass = self.class.module_eval(constant.to_s) if klass.ancestors.include?(AbstractProvider) && (klass != GenericProvider) && (klass != WebsiteBasedProvider) && (klass != AbstractProvider) if klass.abstract? @abstract_classes << klass else providers[md[1]] = klass.instance end end end if (ary = @prefs.abstract_providers) ary.each do |name| md = /^(.+)_/.match(name) next unless md klass_name = md[1] + 'Provider' klass = @abstract_classes.find { |x| x.name.include?(klass_name) } next unless klass fullname = @prefs.send(name.downcase + '_name') next unless fullname instance = klass.new instance.name = name instance.fullname = fullname instance.prefs.read providers[name] = instance end end clear rejig_providers_priority priority = (@prefs.providers_priority || []) priority.map!(&:strip) rest = providers.keys - priority priority.each { |pname| self << providers[pname] } rest.sort.each { |pname| self << providers[pname] } compact! end |