Class: GetInstanceFieldHandler

Inherits:
AbstractCommandHandler show all
Defined in:
lib/javonet-ruby-sdk/core/handler/get_instance_field_handler.rb,
lib/javonet-ruby-sdk/Binaries/Ruby/Linux/X64/core/handler/get_instance_field_handler.rb,
lib/javonet-ruby-sdk/Binaries/Ruby/MacOs/X64/core/handler/get_instance_field_handler.rb,
lib/javonet-ruby-sdk/Binaries/Ruby/Windows/X64/core/handler/get_instance_field_handler.rb

Instance Method Summary collapse

Methods inherited from AbstractCommandHandler

#handle_command, #iterate

Constructor Details

#initialize ⇒ GetInstanceFieldHandler

Returns a new instance of GetInstanceFieldHandler.



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# File 'lib/javonet-ruby-sdk/core/handler/get_instance_field_handler.rb', line 4

def initialize
  @required_parameters_count = 2
end

Instance Method Details

#get_instance_field(command) ⇒ Object 



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# File 'lib/javonet-ruby-sdk/core/handler/get_instance_field_handler.rb', line 12

def get_instance_field(command)
  begin
    if command.payload.length != @required_parameters_count
      raise ArgumentError.new "Instance field parameters mismatch"
    end

    merged_value = '@' + command.payload[1]
    if command.payload[0].instance_variable_defined?(merged_value)
      response = command.payload[0].instance_variable_get(merged_value)
    else
      raise "Instance field not defined"
    end
    return response
  rescue NameError
    fields = command.payload[0].instance_variables
    message = "Field #{command.payload[1]} not found in object of class #{command.payload[0].class.name}. Available fields:\n"
    fields.each { |field_iter| message += "#{field_iter}\n" }
    raise Exception, message
  rescue Exception => e
    return e
  end
end

#process(command) ⇒ Object 



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# File 'lib/javonet-ruby-sdk/core/handler/get_instance_field_handler.rb', line 8

def process(command)
  get_instance_field(command)
end