Class: WCID::Search

Inherits:
Object
  • Object
show all
Defined in:
lib/wcid/search.rb

Overview

WCID::Search objects are for creating and running queries against WorldCat Identities.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(query) ⇒ Search

pass it a string name_search = WCID::Search.new(‘Twain, Mark’)



12
13
14
 
# File 'lib/wcid/search.rb', line 12

def initialize query
  @query = query
end

Instance Attribute Details

#query ⇒ Object (readonly)

Returns the value of attribute query.



7
8
9
 
# File 'lib/wcid/search.rb', line 7

def query
  @query
end

Instance Method Details

#do_search(uri) ⇒ Object

This should maybe be private or somesuch?



59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
 
# File 'lib/wcid/search.rb', line 59

def do_search uri
  begin
    file = ''
    Timeout.timeout 20 do
      file = Net::HTTP.get(URI.parse("#{uri}"))
      #puts file
    end
    doc = REXML::Document.new file
  rescue Timeout::Error
    puts "timeout error!"
    raise 
  rescue Errno::ECONNRESET
    puts "errno!"
    raise
  end
end

#search ⇒ Object

Actually performs the search returns array of Hit objects

hits = name_search.search
         or
hits =  (WCID::Search.new('Twain, Mark')).search



22
23
24
25
26
27
28
29
30
31
32
 
# File 'lib/wcid/search.rb', line 22

def search 
  uri = URI.escape("http://orlabs.oclc.org/Identities/find?fullName=#{@query}")
  doc = do_search uri
  m = doc.elements.to_a("nameAuthorities/match")
  hits = []
  m.each do | m |
    hit_object = WCID::Hit.new(m)
  hits << hit_object
  end
  hits
end

#search_exact ⇒ Object

returns single ID object (the first hit) or nil hit = name_search.search_exact

or

hit = (WCID::Search.new(‘Twain, Mark’)).search_exact



39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
 
# File 'lib/wcid/search.rb', line 39

def search_exact 
  uri = URI.escape("http://orlabs.oclc.org/SRW/search/Identities?query=local.pnkey+exact+#{@query}")
  #puts uri
  begin
    doc = do_search uri
	#puts doc
    if doc.elements['searchRetrieveResponse/numberOfRecords'].text == '0'
      #puts "no record"
      return nil
    else
      #puts 'a record here'
      record = WCID::ID.new(doc)
    end
  rescue
    #puts 'um no text for node?'
    raise
  end
end