Class: Alexandria::BookProviders::Z3950Provider

Inherits:
AbstractProvider show all
Includes:
Logging, GetText
Defined in:
lib/alexandria/book_providers/z3950_provider.rb

Direct Known Subclasses

BLProvider, LOCProvider, SBNProvider

Instance Attribute Summary

Attributes inherited from AbstractProvider

#fullname, #name, #prefs

Instance Method Summary collapse

Methods included from Logging

included, #log

Methods inherited from AbstractProvider

#<=>, abstract?, #abstract?, #action_name, #enabled, #reinitialize, #remove, #toggle_enabled, #transport, unabstract, #variable_name

Constructor Details

#initialize(name = "Z3950", fullname = "Z39.50") ⇒ Z3950Provider

Returns a new instance of Z3950Provider.



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# File 'lib/alexandria/book_providers/z3950_provider.rb', line 18

def initialize(name = "Z3950", fullname = "Z39.50")
  super
  prefs.add("hostname", _("Hostname"), "")
  prefs.add("port", _("Port"), 7090)
  prefs.add("database", _("Database"), "")
  prefs.add("record_syntax", _("Record syntax"), "USMARC",
            ["USMARC", "UNIMARC", "SUTRS"])
  prefs.add("username", _("Username"), "", nil, false)
  prefs.add("password", _("Password"), "", nil, false)
  prefs.add("charset", _("Charset encoding"), "ISO-8859-1")

  # HACK : piggybacking support
  prefs.add("piggyback", "Piggyback", true, [true, false])
  prefs.read
end

Instance Method Details

#books_from_resultset(resultset, isbn) ⇒ Object 



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# File 'lib/alexandria/book_providers/z3950_provider.rb', line 54

def books_from_resultset(resultset, isbn)
  case prefs["record_syntax"]
  when /MARC$/
    books_from_marc(resultset, isbn)
  when "SUTRS"
    books_from_sutrs(resultset)
  else
    raise NoResultsError
  end
end

#search(criterion, type) ⇒ Object

Raises:



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# File 'lib/alexandria/book_providers/z3950_provider.rb', line 34

def search(criterion, type)
  prefs.read
  criterion = criterion.encode(prefs["charset"])

  isbn = type == SEARCH_BY_ISBN ? criterion : nil
  criterion = canonicalise_criterion(criterion, type)
  conn_count = request_count(type)
  resultset = search_records(criterion, type, conn_count)
  log.debug { "total #{resultset.length}" }

  results = books_from_resultset(resultset, isbn)
  raise NoResultsError if results.empty?

  type == SEARCH_BY_ISBN ? results.first : results
end

#url(_book) ⇒ Object 



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# File 'lib/alexandria/book_providers/z3950_provider.rb', line 50

def url(_book)
  nil
end