Class: EDSApi::ConnectionHandler

Inherits:
Connection show all
Defined in:
lib/ebsco-discovery-service-api.rb

Overview

Handles connections - retries failed connections, passes commands along

Instance Attribute Summary collapse

Attributes inherited from Connection

#auth_token, #guest, #password, #userid

Instance Method Summary collapse

Methods inherited from Connection

#end_session, #ip_authenticate, #ip_init, #uid_authenticate, #uid_init

Constructor Details

#initialize(max_retries = 2) ⇒ ConnectionHandler

Returns a new instance of ConnectionHandler.



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# File 'lib/ebsco-discovery-service-api.rb', line 171

def initialize(max_retries = 2)
  @max_retries = max_retries
end

Instance Attribute Details

#max_retries ⇒ Object

Returns the value of attribute max_retries.



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# File 'lib/ebsco-discovery-service-api.rb', line 169

def max_retries
  @max_retries
end

#session_token ⇒ Object

Returns the value of attribute session_token.



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# File 'lib/ebsco-discovery-service-api.rb', line 170

def session_token
  @session_token
end

Instance Method Details

#create_session(auth_token = @auth_token, format = :xml) ⇒ Object 



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# File 'lib/ebsco-discovery-service-api.rb', line 180

def create_session(auth_token = @auth_token, format = :xml)
  @auth_token = auth_token
      result = JSON.parse(super())
    if result.has_key?('ErrorNumber')
    return result.to_s
    else
    @session_token = result['SessionToken']
     return result['SessionToken']
    end
end

#info(session_token, auth_token, format = :xml) ⇒ Object 



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# File 'lib/ebsco-discovery-service-api.rb', line 241

def info (session_token, auth_token, format= :xml)
       attempts = 0
       @auth_token = auth_token
       @session_token = session_token
      loop do
        result = JSON.parse(super(format)) # JSON Parse

        if result.has_key?('ErrorNumber')
          case result['ErrorNumber']
            when "108"
              @session_token = self.create_session
            when "109"
              @session_token = self.create_session
            when "104"
              self.uid_authenticate(:json)
          when "107"
            self.uid_authenticate(:json)
          end
          attempts += 1
          if attempts >= @max_retries
            return result
          end
        else
         return result
        end
        end
end

#retrieve(dbid, an, highlightterms, ebookpreferredformat, session_token, auth_token, format = :xml) ⇒ Object 



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# File 'lib/ebsco-discovery-service-api.rb', line 267

def retrieve(dbid, an, highlightterms, ebookpreferredformat, session_token, auth_token, format = :xml)
  attempts = 0
  @session_token = session_token
  @auth_token = auth_token
  loop do
    result = JSON.parse(super(dbid, an, highlightterms, ebookpreferredformat, format))
    if result.has_key?('ErrorNumber')
      case result['ErrorNumber']
        when "108"
          @session_token = self.create_session
        when "109"
          @session_token = self.create_session
        when "104"
          self.uid_authenticate(:json)
      when "107"
        self.uid_authenticate(:json)
      end
      attempts += 1
      if attempts >= @max_retries
      return result
      end
    else
     return result
    end
  end
end

#search(options, session_token, auth_token, format = :xml) ⇒ Object 



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# File 'lib/ebsco-discovery-service-api.rb', line 190

def search(options, session_token, auth_token, format = :xml)
  
  # temporary fix while API SI resolves

  # catches case where user navigates past result page 250 and applies facet/limiter

  if (options.index('&action=') && (options.index('&action=') > 0))
    if (options.index('&action=GoToPage(').nil? && options.index('&action=SetView(').nil?)
      if (options.index('&pagenumber=') && (options.index('&pagenumber=') > 0))
        beginSubstring = options.index('&pagenumber=') + 12
        currentpage = options[beginSubstring..-1]
        newOptions = options[0..beginSubstring-1]
        endSubstring = currentpage.index('&') - 1
        newOptionsEnd = currentpage[endSubstring+1..-1]
        options = newOptions + "1" + newOptionsEnd
      end
    end
  end
        
  attempts = 0
  @session_token = session_token
  @auth_token = auth_token
  loop do
    result = JSON.parse(super(options, format))
    if result.has_key?('ErrorNumber')
      case result['ErrorNumber']
            when "108"
              @session_token = self.create_session
              result = JSON.parse(super(options, format))
            when "109"
              @session_token = self.create_session
              result = JSON.parse(super(options, format))
            when "104"
              self.uid_authenticate(:json)
              result = JSON.parse(super(options, format))
            when "107"
              self.uid_authenticate(:json)
              result = JSON.parse(super(options, format))
            else
              return result 
      end
      unless result.has_key?('ErrorNumber')
        return result
      end
      attempts += 1
      if attempts >= @max_retries
            return result
      end
    else
          return result
    end
  end
end

#show_auth_token ⇒ Object 



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# File 'lib/ebsco-discovery-service-api.rb', line 177

def show_auth_token
  return @auth_token
end

#show_session_token ⇒ Object 



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# File 'lib/ebsco-discovery-service-api.rb', line 174

def show_session_token
  return @session_token
end