Module: Sem4rSoap::SoapAttributes::ClassMethods

Defined in:
lib/sem4r_soap/soap_attributes.rb

Instance Method Summary collapse

Instance Method Details

#_from_element(el) ⇒ Object 



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# File 'lib/sem4r_soap/soap_attributes.rb', line 216

def _from_element(el)
  return nil unless el
  new._from_element(el)
end

#attributes ⇒ Object 



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# File 'lib/sem4r_soap/soap_attributes.rb', line 90

def attributes
  @attributes
end

#enum(set, values) ⇒ Object 



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# File 'lib/sem4r_soap/soap_attributes.rb', line 79

def enum(set, values)
  tmp = values.map do |v|
    if const_defined?(v.to_sym)
      const_get(v.to_sym)
    else
      const_set(v.to_sym, v.to_s)
    end
  end
  const_set( set.to_sym, tmp )
end

#g_accessor(name, constraints = {}) ⇒ Object

constraints

:values_in
:if_type
:default

TODO: g_accessor prende in input anche elements ed estrae automaticamente l’elemento che interessa

cioe' invece di scrivere headline       el.at_xpath("headline").text dovrebbe bastare scrivere
headline el



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# File 'lib/sem4r_soap/soap_attributes.rb', line 109

def g_accessor(name, constraints = {})
  constraints.assert_valid_keys(:xpath, :values_in, :if_type, :default)
  attribute = add_attribute(name, false, constraints[:xpath])
  name = name.to_s

  #
  # define setter
  #

  # values_in
  enum = nil
  if constraints.key?(:values_in)
    enum = const_get(constraints[:values_in])
  end

  # if_type
  if_type = nil
  if constraints.key?(:if_type)
    if_type = constraints[:if_type]
    other_instance_var = "type"
  end

  define_method "#{name}=" do |value|
    if enum and !enum.include?(value)
      raise "Value '#{value}' not permitted "
    end
    if if_type
      type = instance_variable_get "@#{other_instance_var}"
      raise "type must be '#{if_type}' instead of '#{type}'" unless if_type == type
    end
    instance_variable_set "@#{name}", value
  end

  #
  # define getter ( almost :-) )
  #

  # default_value
  default_value = nil
  if constraints.key?(:default)
    default_value = constraints[:default]
  end

  define_method "#{name}" do |*values|  # |value = nil| is incorrect in ruby 1.8
    raise ArgumentError, "wrong number of arguments (#{values.size} for 0)" if values.length > 1
    value = values.first
    if value
      self.__send__("#{name}=", value)
    elsif instance_variable_defined? "@#{name}"
      instance_variable_get "@#{name}"
    else
      default_value
    end
  end
end

#g_reader(name) ⇒ Object 



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# File 'lib/sem4r_soap/soap_attributes.rb', line 94

def g_reader(name)
  @attributes  ||= []
  @attributes << MetaSoapAttribute.new(name, false)
  attr_reader name
end

#g_set_accessor(column, constraints = {}) ⇒ Object 



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# File 'lib/sem4r_soap/soap_attributes.rb', line 165

def g_set_accessor(column, constraints = {})
  constraints.assert_valid_keys(:values_in)

  column  = column.to_s
  columns = "#{column}s"
  attribute = add_attribute(columns, true)

  # values_in
  enum = nil
  if constraints.key?(:values_in)
    enum = const_get(constraints[:values_in])
  end

  #
  # define
  #    column= :a
  #    column :a
  #

  define_method "#{column}=" do |value|
    if enum and !enum.include?(value)
      raise "Value not permitted #{value}"
    end
    instance_eval <<-EOFS
      @#{columns} ||= []
      @#{columns} << value unless @#{columns}.include?(value)
    EOFS
  end

  alias_method column, "#{column}="

  #
  # define
  #    colums [:a,:b,:c]
  # define
  #    colums
  #

  define_method "#{columns}" do |*values|
    if values and !values.empty?
      instance_eval "@#{columns} ||= []"
      values.each do |value|
        instance_eval "@#{column}(value)"
      end
    else
      instance_eval "@#{columns} ||= []"
      instance_variable_get "@#{columns}"
    end
  end
end