Class: XML::Mapping::BooleanNode

Inherits:
SingleAttributeNode show all
Defined in:
lib/xml/mapping/standard_nodes.rb

Overview

Node factory function synopsis:

boolean_node :_attrname_, _path_,
             _true_value_, _false_value_ [, :default_value=>_obj_]
                                         [, :optional=>true]
                                         [, :mapping=>_m_]

Node that maps an XML node’s text (the element name resp. the attribute value) to a boolean attribute of the mapped object. The attribute named by :attrname is mapped to/from the XML subnode named by the XPath expression path. true_value is the text the node must have in order to represent the true boolean value, false_value (actually, any value other than true_value) is the text the node must have in order to represent the false boolean value.

Instance Method Summary collapse

Methods inherited from SingleAttributeNode

#default_when_xpath_err, #initialize_impl, #is_present_in?, #obj_initializing, #obj_to_xml, #xml_to_obj

Methods inherited from Node

#is_present_in?, #obj_initializing, #obj_to_xml, #xml_to_obj

Constructor Details

#initialize(*args) ⇒ BooleanNode

Initializer.



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# File 'lib/xml/mapping/standard_nodes.rb', line 197

def initialize(*args)
  path,true_value,false_value,*args = super(*args)
  @path = XML::XXPath.new(path)
  @true_value = true_value; @false_value = false_value
  args
end

Instance Method Details

#extract_attr_value(xml) ⇒ Object

:nodoc:



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# File 'lib/xml/mapping/standard_nodes.rb', line 203

def extract_attr_value(xml) # :nodoc:
  default_when_xpath_err{ @path.first(xml).text==@true_value }
end

#set_attr_value(xml, value) ⇒ Object

:nodoc:



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# File 'lib/xml/mapping/standard_nodes.rb', line 206

def set_attr_value(xml, value) # :nodoc:
  @path.first(xml,:ensure_created=>true).text = value ? @true_value : @false_value
end