Class: ObjectType

Inherits:
Object
  • Object
show all
Defined in:
lib/ObjectModel/Types/ObjectType.rb

Class Method Summary collapse

Class Method Details

.delete(e, m, storage) ⇒ Object 



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# File 'lib/ObjectModel/Types/ObjectType.rb', line 48

def delete e, m, storage					
	storage[:value_objects].filter(:entity_id => e.entity_id, :name => m.name.to_s).delete
end

.initial_value(m, e) ⇒ Object 



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# File 'lib/ObjectModel/Types/ObjectType.rb', line 4

def initial_value m, e
	nil
	#			e.instance_variable_set m.ivname, nil
end

.initialize_copy(m, e, c) ⇒ Object 



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# File 'lib/ObjectModel/Types/ObjectType.rb', line 19

def initialize_copy m, e, c			
	value = e.instance_variable_get(m.ivname)
	value_copy = if value == nil
		nil
	elsif value.respond_to? :copy
		value.copy
	else
		copy_object value
	end
	c[m.ivname] = value_copy
end

.initialize_storage(db) ⇒ Object 



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# File 'lib/ObjectModel/Types/ObjectType.rb', line 9

def initialize_storage db			
	db.create_table :value_objects do
		column :entity_id, :text
		column :name, :text 
		column :yaml, :text				
		column :class, :text
		#				index :entity_id
	end
end

.load(m, e, storage) ⇒ Object

Raises:



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# File 'lib/ObjectModel/Types/ObjectType.rb', line 52

def load m, e, storage	
	row = storage[:value_objects][:entity_id => e.entity_id, :name => m.name.to_s]
	raise LoadError unless row
	
	value = load_object row[:yaml], row[:class] #YAML.load row[:yaml] # YAML doesn't raise ConstMissing, so we can't just load.
	
	freeze_all_tree value
	e.instance_variable_set m.ivname, value
end

.persist(c, entity_id, m, storage) ⇒ Object 



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# File 'lib/ObjectModel/Types/ObjectType.rb', line 37

def persist c, entity_id, m, storage			
	storage[:value_objects].filter(:entity_id => entity_id, :name => m.name.to_s).delete
	value, klass = dump_object c[m.ivname]			
	storage[:value_objects].insert(
																:entity_id => entity_id, 
																:name => m.name.to_s,
																:yaml => value,
																:class => klass
	)			
end

.print_storage(db, name) ⇒ Object 



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# File 'lib/ObjectModel/Types/ObjectType.rb', line 62

def print_storage db, name
	return unless name == nil or name == :value_objects
	puts "\nValueObjects: size = #{db[:value_objects].size}"
	#			db[:value_objects].print
end

.validate_type(value) ⇒ Object 



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# File 'lib/ObjectModel/Types/ObjectType.rb', line 68

def validate_type value
	!(value.is_a?(Entity) or value.is_a?(Proc))
end

.write_back(c, e, m) ⇒ Object 



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# File 'lib/ObjectModel/Types/ObjectType.rb', line 31

def write_back c, e, m				
	value = c[m.ivname]
	freeze_all_tree value
	e.instance_variable_set m.ivname, value
end

.yaml_load(data) ⇒ Object

Becouse YAML don’t raise ConstMissing error we need to preload all Classes from YAML data.



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# File 'lib/ObjectModel/Types/ObjectType.rb', line 73

def yaml_load data
	begin
		doc = YAML.parse data
		load_classes_for doc
		o = doc.transform
		
		return o
	rescue Exception => e
		warn e
		raise e
	end
end