Class: Distelli::JsonMarshaller

Inherits:
Marshaller show all
Defined in:
lib/distelli/servicemarshallers.rb

Overview

JSON Marshaller

Instance Method Summary collapse

Methods inherited from Marshaller

#add_object

Constructor Details

#initialize ⇒ JsonMarshaller

Returns a new instance of JsonMarshaller.



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# File 'lib/distelli/servicemarshallers.rb', line 28

def initialize()
  super
end

Instance Method Details

#encode(obj) ⇒ Object 



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# File 'lib/distelli/servicemarshallers.rb', line 32

def encode(obj)
  data = Hash.new
  if obj.is_a?(Integer) or obj.is_a?(Float) or obj.is_a?(String) or obj.is_a?(TrueClass) or obj.is_a?(FalseClass)
    return obj
  elsif obj.is_a?(DateTime)
    return obj.strftime("%Y-%m-%dT%H:%M:%S%z")
  end

  params_set_name = '_'+obj.class.name.split('::').last+'__params'
  type_map_name = '_'+obj.class.name.split('::').last+'__type_map'
  params_set = obj.instance_variable_get('@'+params_set_name)
  obj.instance_variables.each do |var|
    var_name = var.to_s.delete('@')
    if var_name == type_map_name or var_name == params_set_name
      next
    end
    if params_set != nil and params_set.include?(var_name)
      next
    end

    val = obj.instance_variable_get(var)
    if val.is_a?(Integer) or val.is_a?(Float) or val.is_a?(String) or val.is_a?(TrueClass) or val.is_a?(FalseClass)
      data[var_name] = val
    elsif val.is_a?(DateTime)
      data[var_name] = val.strftime("%Y-%m-%dT%H:%M:%S%z")
    elsif val.instance_of?(Array)
      array = Array.new
      val.each do |elem|
        encoded = encode(elem)
        array.push(encoded)
      end
      data[var_name] = array
    else val.kind_of?(Object)
      encoded = encode(val)
      data[var_name] = encoded
    end
  end
  return data
end

#marshall(request) ⇒ Object 



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# File 'lib/distelli/servicemarshallers.rb', line 72

def marshall(request)
  data = encode(request)
  request_wrapper = Hash.new
  request_wrapper[request.class.name.split('::').last] = data
  return request_wrapper.to_json
end

#marshall_error(error) ⇒ Object 



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# File 'lib/distelli/servicemarshallers.rb', line 79

def marshall_error(error)
  if not error.is_a?(Distelli::BaseException)
    raise StandardError.new("Cannot marshall error: "+error.inspect)
  end

  err_msg = error.err_msg
  err_code = error.err_code
  return '{"Error":{"code":"'+err_code.to_s+'", "message":"'+err_msg.to_s+'"}}'
end

#unmarshall(json_data) ⇒ Object 



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# File 'lib/distelli/servicemarshallers.rb', line 100

def unmarshall(json_data)
  data_hash = JSON.load(json_data)
  data_hash.each_pair do |k,v|
    if v.is_a?(Hash)
      return unmarshall_obj(k, v)
    else
      raise MarshallException.new("Invalid data "+json_data)
    end
  end
end

#unmarshall_error(json_data) ⇒ Object 



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# File 'lib/distelli/servicemarshallers.rb', line 89

def unmarshall_error(json_data)
  data_hash = JSON.load(json_data)
  err_obj = data_hash[ServiceConstants::ERROR_KEY]
  if err_obj == nil
    return nil
  end
  err_code = err_obj[ServiceConstants::ERR_CODE_KEY]
  err_msg = err_obj[ServiceConstants::ERR_MSG_KEY]
  return [err_code, err_msg]
end