Class: DataType

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

Class Method Summary collapse

Class Method Details

.initial_value(m, e) ⇒ Object 



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# File 'lib/ObjectModel/Types/DataType.rb', line 3

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/DataType.rb', line 8

def initialize_copy m, e, c			
	value = e.instance_variable_get(m.ivname)
	value_copy = value != nil ? Repository::StreamID.new(value.sid) : nil
	c[m.ivname] = value_copy
end

.load(m, e, storage) ⇒ Object

Raises:



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# File 'lib/ObjectModel/Types/DataType.rb', line 20

def load m, e, storage	
	row = storage[:entities_content][:entity_id => e.entity_id, :name => m.name.to_s]			
	raise LoadError unless row and row[:class] == "STREAM_ID"			
	
	stream_id = row[:value]
	value = stream_id == "nil" ? nil : Repository::StreamID.new(stream_id)
	e.instance_variable_set m.ivname, value
end

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



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# File 'lib/ObjectModel/Types/DataType.rb', line 29

def persist c, entity_id, m, storage					
	value = c[m.ivname]
	stream_id = value == nil ? "nil" : value.sid
	storage[:entities_content].insert(
												:entity_id => entity_id, 
												:name => m.name.to_s,
												:value => stream_id,
												:class => "STREAM_ID"
	)			
end

.validate_type(value) ⇒ Object 



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# File 'lib/ObjectModel/Types/DataType.rb', line 40

def validate_type value
	value == nil or value.is_a? StreamID
end

.write_back(c, e, m) ⇒ Object 



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# File 'lib/ObjectModel/Types/DataType.rb', line 14

def write_back c, e, m				
	value = c[m.ivname]
	value.should! :be_a, [NilClass, Repository::StreamID]
	e.instance_variable_set m.ivname, value
end