def migrate_attribute(self, property, metabuilder, instance):
"""
Method migrate an attribute from the metabuilder instance to the instance created by itself.
:param property: object to set the code given in the parameters of this method
:type property: <type 'property'>
:param metabuilder: instance of a metabuilder where to extract the methods and validators of the attribute to
migrate
:type metabuilder: <type 'Metabuilder'>
:param instance: instance created that will hold the property and the validators
:type instance: <type 'instance'>
"""
for method in [
getattr(metabuilder, m)
for m in getMethodsByName(metabuilder, property)
]:
if metabuilder._prefix in method.__name__:
setattr(instance,
method.__name__ + getMeta_attr_name(property),
MethodType(unbind(method), metabuilder))
else:
setattr(instance, method.__name__,
getattr(metabuilder, method.__name__))
getter = getattr(instance, 'get{0}'.format(property))
setter = getattr(instance, 'set{0}'.format(property))
self.set_property(instance, property, getter, setter,
getattr(metabuilder, getMeta_attr_name(property)))
def migrate_attribute(self, property, metabuilder, instance):
"""
Method migrate an attribute from the metabuilder instance to the instance created by itself.
:param property: object to set the code given in the parameters of this method
:type property: <type 'property'>
:param metabuilder: instance of a metabuilder where to extract the methods and validators of the attribute to
migrate
:type metabuilder: <type 'Metabuilder'>
:param instance: instance created that will hold the property and the validators
:type instance: <type 'instance'>
"""
for method in [getattr(metabuilder, m) for m in getMethodsByName(metabuilder, property)]:
if metabuilder._prefix in method.__name__:
setattr(instance, method.__name__ + getMeta_attr_name(property), MethodType(unbind(method), metabuilder))
else:
setattr(instance, method.__name__, getattr(metabuilder, method.__name__))
getter = getattr(instance, 'get{0}'.format(property))
setter = getattr(instance, 'set{0}'.format(property))
self.set_property(instance, property, getter, setter, getattr(metabuilder, getMeta_attr_name(property)))
def set_property(self,
obj,
attributeName,
getter,
setter,
defaultValue=None):
"""
"""
setattr(obj.__class__, attributeName, property(fget=getter,
fset=setter))
setattr(obj, getMeta_attr_name(attributeName), defaultValue)
def build_getter(self, instance, propertyName):
"""
Method that given an instance and a propertyName, builds a getter dynamically and associate this propertyName
to the instance.
:param instance: The instance to associate the getter method
:type instance: <type 'instance'>
:param propertyName: The property that the getter will return on calling
:type propertyName: str
"""
getter = "def get{0}(self):\n" \
" return self.{1}".format(propertyName, getMeta_attr_name(propertyName))
return self.create_function(instance, getter)
def build_getter(self, instance, propertyName):
"""
Method that given an instance and a propertyName, builds a getter dynamically and associate this propertyName
to the instance.
:param instance: The instance to associate the getter method
:type instance: <type 'instance'>
:param propertyName: The property that the getter will return on calling
:type propertyName: str
"""
getter = "def get{0}(self):\n" \
" return self.{1}".format(propertyName, getMeta_attr_name(propertyName))
return self.create_function(instance, getter)
def build_setter(self, instance, propertyName, callbacks=None):
"""
Method that given an instance and a propertyName, builds a setter dynamically and associate this propertyName
to the instance. Will append validators if any callback passed
:param instance: The instance to associate the getter method
:type instance: <type 'instance'>
:param propertyName: The property that the getter will return on calling
:type propertyName: str
"""
callback = '' if callbacks is None else '\n'.join('\t'+callback.generate_validator().strip() for callback in callbacks)
setter = "def set{0}(self,value):\n" \
"{1}\n" \
"\tself.{2}=value".format(propertyName, callback, getMeta_attr_name(propertyName))
return self.create_function(instance, setter)
def build_setter(self, instance, propertyName, callbacks=None):
"""
Method that given an instance and a propertyName, builds a setter dynamically and associate this propertyName
to the instance. Will append validators if any callback passed
:param instance: The instance to associate the getter method
:type instance: <type 'instance'>
:param propertyName: The property that the getter will return on calling
:type propertyName: str
"""
callback = '' if callbacks is None else '\n'.join(
'\t' + callback.generate_validator().strip()
for callback in callbacks)
setter = "def set{0}(self,value):\n" \
"{1}\n" \
"\tself.{2}=value".format(propertyName, callback, getMeta_attr_name(propertyName))
return self.create_function(instance, setter)
def set_property(self, obj, attributeName, getter, setter, defaultValue=None):
"""
"""
setattr(obj.__class__, attributeName, property(fget=getter, fset=setter))
setattr(obj, getMeta_attr_name(attributeName), defaultValue)
def __init__(self, attribute, validator, validateArg=None):
self.validator = validator
self.validatorArguments = self.process_validator_arg(validateArg)
self.validatorName = validator.__name__ + getMeta_attr_name(attribute)