def serialize_class(Cls):
'''
Serialize an xtUML metamodel class.
'''
metaclass = xtuml.get_metaclass(Cls)
attributes = ['%s %s' % (name, ty.upper()) for name, ty in metaclass.attributes]
s = 'CREATE TABLE %s (\n ' % metaclass.kind
s += ',\n '.join(attributes)
s += '\n);\n'
return s
def serialize_class(Cls):
'''
Serialize an xtUML metamodel class.
'''
metaclass = xtuml.get_metaclass(Cls)
attributes = ['%s %s' % (name, ty.upper()) for name, ty in metaclass.attributes]
s = 'CREATE TABLE %s (\n ' % metaclass.kind
s += ',\n '.join(attributes)
s += '\n);\n'
return s
def pretty_unique_identifier(inst, identifier):
'''
Create a human-readable representation a unique identifier.
'''
values = ''
prefix = ''
metaclass = xtuml.get_metaclass(inst)
for name, ty in metaclass.attributes:
if name in metaclass.identifying_attributes:
value = getattr(inst, name)
value = xtuml.serialize_value(value, ty)
values += '%s%s=%s' % (prefix, name, value)
prefix = ', '
return '%s(%s)' % (identifier, values)
def pretty_from_link(inst, link):
'''
Create a human-readable representation of a link on the 'FROM'-side
'''
values = ''
prefix = ''
metaclass = xtuml.get_metaclass(inst)
for name, ty in metaclass.attributes:
if name in link.key_map:
value = getattr(inst, name)
value = xtuml.serialize_value(value, ty)
values += '%s%s=%s' % (prefix, name, value)
prefix = ', '
return '%s(%s)' % (metaclass.kind, values)
def pretty_unique_identifier(inst, identifier):
'''
Create a human-readable representation a unique identifier.
'''
values = ''
prefix = ''
metaclass = xtuml.get_metaclass(inst)
for name, ty in metaclass.attributes:
if name in metaclass.identifying_attributes:
value = getattr(inst, name)
value = xtuml.serialize_value(value, ty)
values += '%s%s=%s' % (prefix, name, value)
prefix = ', '
return '%s(%s)' % (identifier, values)
def pretty_from_link(inst, link):
'''
Create a human-readable representation of a link on the 'FROM'-side
'''
values = ''
prefix = ''
metaclass = xtuml.get_metaclass(inst)
for name, ty in metaclass.attributes:
if name in link.key_map:
value = getattr(inst, name)
value = xtuml.serialize_value(value, ty)
values += '%s%s=%s' % (prefix, name, value)
prefix = ', '
return '%s(%s)' % (metaclass.kind, values)
def populate_connections(self, metamodel):
'''
Populate links in a *metamodel* with connections between them.
'''
storage = dict()
for ass in metamodel.associations:
source_class = ass.source_link.to_metaclass
target_class = ass.target_link.to_metaclass
if target_class not in storage:
storage[target_class] = dict()
link_key = frozenset(ass.source_link.key_map.values())
if link_key not in storage[target_class]:
storage[target_class][link_key] = dict()
for other_inst in target_class.storage:
inst_key = ass.source_link.compute_index_key(other_inst)
if inst_key is None:
continue
if inst_key not in storage[target_class][link_key]:
storage[target_class][link_key][
inst_key] = xtuml.OrderedSet()
storage[target_class][link_key][inst_key].add(other_inst)
for inst in source_class.storage:
inst_key = ass.source_link.compute_lookup_key(inst)
if inst_key is None:
continue
if inst_key not in storage[target_class][link_key]:
continue
for other_inst in storage[target_class][link_key][inst_key]:
ass.source_link.connect(other_inst, inst, check=False)
ass.target_link.connect(inst, other_inst, check=False)
for inst in metamodel.instances:
metaclass = xtuml.get_metaclass(inst)
for attr in metaclass.referential_attributes:
if attr in inst.__dict__:
delattr(inst, attr)
def populate_connections(self, metamodel):
'''
Populate links in a *metamodel* with connections between them.
'''
storage = dict()
for ass in metamodel.associations:
source_class = ass.source_link.to_metaclass
target_class = ass.target_link.to_metaclass
if target_class not in storage:
storage[target_class] = dict()
link_key = frozenset(ass.source_link.key_map.values())
if link_key not in storage[target_class]:
storage[target_class][link_key] = dict()
for other_inst in target_class.storage:
inst_key = ass.source_link.compute_index_key(other_inst)
if inst_key is None:
continue
if inst_key not in storage[target_class][link_key]:
storage[target_class][link_key][inst_key] = xtuml.OrderedSet()
storage[target_class][link_key][inst_key].add(other_inst)
for inst in source_class.storage:
inst_key = ass.source_link.compute_lookup_key(inst)
if inst_key is None:
continue
if inst_key not in storage[target_class][link_key]:
continue
for other_inst in storage[target_class][link_key][inst_key]:
ass.source_link.connect(other_inst, inst, check=False)
ass.target_link.connect(inst, other_inst, check=False)
for inst in metamodel.instances:
metaclass = xtuml.get_metaclass(inst)
for attr in metaclass.referential_attributes:
if attr in inst.__dict__:
delattr(inst, attr)
def serialize_instance(instance):
'''
Serialize an *instance* from a metamodel.
'''
attr_count = 0
metaclass = xtuml.get_metaclass(instance)
s = 'INSERT INTO %s VALUES (' % metaclass.kind
for name, ty in metaclass.attributes:
value = getattr(instance, name)
s += '\n '
s += serialize_value(value, ty)
attr_count += 1
if attr_count < len(metaclass.attributes):
s += ', -- %s : %s' % (name, ty)
else:
s += ' -- %s : %s' % (name, ty)
s += '\n);\n'
return s
def serialize_instance(instance):
'''
Serialize an *instance* from a metamodel.
'''
attr_count = 0
metaclass = xtuml.get_metaclass(instance)
s = 'INSERT INTO %s VALUES (' % metaclass.kind
for name, ty in metaclass.attributes:
value = getattr(instance, name)
s += '\n '
s += serialize_value(value, ty)
attr_count += 1
if attr_count < len(metaclass.attributes):
s += ', -- %s : %s' % (name, ty)
else:
s += ' -- %s : %s' % (name, ty)
s += '\n);\n'
return s