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 164

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 162

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 163

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 173

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 237

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 263

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 183

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?)
			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
				currentpageInt = currentpage[0..endSubstring]
				newOptionsEnd = currentpage[endSubstring+1..-1]
				if Integer(currentpageInt) > 249
					options = newOptions + "1" + newOptionsEnd
				end
			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 170

def show_auth_token
  return @auth_token
end

#show_session_token ⇒ Object 



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# File 'lib/ebsco-discovery-service-api.rb', line 167

def show_session_token
  return @session_token
end