Class: Async::Postgres::Connection

Inherits:
Wrapper
  • Object
show all
Defined in:
lib/async/postgres/connection.rb

Instance Method Summary collapse

Constructor Details

#initialize(connection_string, reactor = nil) ⇒ Connection

Returns a new instance of Connection.



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# File 'lib/async/postgres/connection.rb', line 28

def initialize(connection_string, reactor = nil)
	@connection = PG::Connection.connect_start(connection_string)
	
	super(@connection.socket_io, reactor)
	
	status = @connection.connect_poll
	
	while true
		if status == PG::PGRES_POLLING_FAILED
			raise PG::Error.new(@connection.error_message)
		elsif status == PG::PGRES_POLLING_READING
			self.wait_readable
		elsif(status == PG::PGRES_POLLING_WRITING)
			self.wait_writable
		elsif status == PG::PGRES_POLLING_OK
			break
		end
		
		status = @connection.connect_poll
	end
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(*args) ⇒ Object 



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# File 'lib/async/postgres/connection.rb', line 80

def method_missing(*args)
	@connection.send(*args)
end

Instance Method Details

#async_exec(*args) ⇒ Object Also known as: exec 



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# File 'lib/async/postgres/connection.rb', line 50

def async_exec(*args)
	@connection.send_query(*args)
	last_result = result = true
	
	while true
		wait_readable
		
		@connection.consume_input
		
		while @connection.is_busy == false
			if result = @connection.get_result
				last_result = result
				
				yield result if block_given?
			else
				return last_result
			end
		end
	end
ensure
	@connection.get_result until result.nil?
end

#respond_to?(*args) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/async/postgres/connection.rb', line 76

def respond_to?(*args)
	@connection.respond_to(*args)
end