Module: XML::XXPath::Accessors::UnspecifiednessSupport

Included in:
Attribute
Defined in:
lib/xml/rexml_ext.rb

Overview

we need a boolean “unspecified?” attribute for XML nodes – paths like “*” oder (somewhen) “foo|bar” create “unspecified” nodes that the user must then “specify” by setting their text etc. (or manually setting unspecified=false)

This is mixed into the REXML::Element and XML::XXPath::Accessors::Attribute classes.

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.append_features(base) ⇒ Object 



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# File 'lib/xml/rexml_ext.rb', line 28

def self.append_features(base)
  return if base.included_modules.include? self # avoid aliasing methods more than once
                                                # (would lead to infinite recursion)
  super
  base.module_eval "    alias_method :_text_orig, :text\n    alias_method :_textis_orig, :text=\n    def text\n      # we're suffering from the \"fragile base class\"\n      # phenomenon here -- we don't know whether the\n      # implementation of the class we get mixed into always\n      # calls text (instead of just accessing @text or so)\n      if unspecified?\n        \"[UNSPECIFIED]\"\n      else\n        _text_orig\n      end\n    end\n    def text=(x)\n      _textis_orig(x)\n      self.unspecified=false\n    end\n\n    alias_method :_nameis_orig, :name=\n    def name=(x)\n      _nameis_orig(x)\n      self.unspecified=false\n    end\n  EOS\nend\n"

Instance Method Details

#unspecified=(x) ⇒ Object 



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# File 'lib/xml/rexml_ext.rb', line 24

def unspecified=(x)
  @xml_xpath_unspecified = x
end

#unspecified? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/xml/rexml_ext.rb', line 20

def unspecified?
  @xml_xpath_unspecified ||= false
end