Module: Lafcadio::Query::DomainObjectImpostor

Defined in:
lib/lafcadio/query.rb

Overview

:nodoc:

Constant Summary collapse

@@impostor_classes = 
{}

Class Method Summary collapse

Class Method Details

.impostor(domain_class) ⇒ Object 



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# File 'lib/lafcadio/query.rb', line 497

def self.impostor( domain_class )
	unless @@impostor_classes[domain_class]
		i_class = Class.new
		i_class.module_eval <<-CLASS_DEF
			attr_reader :domain_class
			
			def initialize; @domain_class = #{ domain_class.name }; end
			
			def method_missing( methId, *args )
				fieldName = methId.id2name
				if ( classField = self.domain_class.field( fieldName ) )
					ObjectFieldImpostor.new( self, classField )
				else
					msg = "undefined method `" + fieldName +
					      "' for #<DomainObjectImpostor::" +
					      '#{ domain_class.name }' + ">"
					raise( NoMethodError, msg )
				end
			end
			
			#{ domain_class.name }.class_fields.each do |class_field|
				begin
					undef_method class_field.name.to_sym
				rescue NameError
					# not defined globally or in an included Module, skip it
				end
			end
		CLASS_DEF
		@@impostor_classes[domain_class] = i_class
	end
	i_class = @@impostor_classes[domain_class]
	i_class.new
end