def onBuild(self, *args, **kwargs):
"""
Called when this object is built. Notifies ``self.destination`` that it now has a value.
"""
if self.destination and kwargs.get('instance'):
logger.debug('Setting value %s for %s' % (kwargs['instance'], self.destination))
if not self.value:
self.destination.value = kwargs['instance']
def build(self, *args, **kwargs):
self.onBuild(**kwargs)
if self.value:
logger.debug('%s has a set value %s' % (self, self.value))
# self.add(self.value)
self.value = None
result = self.doBuild(*args, **kwargs)
return result
def __init__(self, clazzToBuild):
'''
:arg clazzToBuild: a model class with :py:class:`builders:construct:Construct` fields to populate
Creates new :py:class:`builders.builder.Builder` instance. Instance contains it's own set of modifiers (see :py:method:`withA`) and produces one result tree at a time.
'''
self.clazz = clazzToBuild
self.modifiers = []
logger.debug("New builder for clazz <%s>" % self.clazz)
def __init__(self, clazzToBuild):
'''
:arg clazzToBuild: a model class with :py:class:`builders:construct:Construct` fields to populate
Creates new :py:class:`builders.builder.Builder` instance. Instance contains it's own set of modifiers (see :py:method:`withA`) and produces one result tree at a time.
'''
self.clazz = clazzToBuild
self.modifiers = []
logger.debug("New builder for clazz <%s>" % self.clazz)
def build(self, *args, **kwargs):
"""
Called by :py:class:`builders.builder.Builder` on the model construction.
Returns actual pre-set value (via :py:class:`Link` mechanism) or a newly built one.
"""
self.onBuild(**kwargs)
if self.value:
logger.debug('%s returning pre-built value %s' % (self, self.value))
result = self.value
self.value = None
else:
result = self.doBuild(*args, **kwargs)
return result
def doBuild(self, modifiers, instance=None, **kwargs):
if not self.destination:
raise ValueError('Link %s has no attachment' % self)
logger.debug('Up-linking instance for %s with Given %s value of %s' %
(self.clazz, self.destination, instance))
mods = [modifiers]
if isinstance(self.destination, Collection):
mods.append(modifiers_package.HavingIn(self.destination, instance))
else:
mods.append(modifiers_package.Given(self.destination, instance))
if self.reuser:
return self.reuser.doBuild(modifiers, **dict(instance=instance, **kwargs))
else:
return builder.Builder(self.clazz).withA(*mods).build()
def _buildclazz(self, clazzToBuild):
[
m.apply(clazz=self.clazz) for m in self.modifiers
if m.shouldRun(clazz=self.clazz)
]
instance = self.clazz()
logger.debug('Created new instance %s of clazz %s' %
(instance, self.clazz))
def make_construct(name, construct):
logger.debug('Constructing <%s.%s>' % (self.clazz, name))
setattr(instance, name,
construct.build(self.modifiers, instance=instance))
logger.debug('Creating nested constructst of %s' % instance)
for name, value in getmembers(
instance, lambda x: isinstance(x, construct.Construct) and
not isinstance(x, construct.Uplink)):
make_construct(name, value)
logger.debug('Creating uplinks of %s' % instance)
for name, value in getmembers(
instance, lambda x: isinstance(x, construct.Uplink)):
make_construct(name, value)
# instance level modifier application
for modifier in self.modifiers:
if modifier.shouldRun(instance=instance):
modifier.apply(instance=instance)
return instance
def doBuild(self, modifiers, **kwargs):
total_amount = self.number
for o in self.overrides:
total_amount = o(total_amount)
self.overrides = []
result = list(self.items)
self.items = []
if self.destination:
logger.debug("Collection %s found destinations %s" % (self, self.destination))
saved_value = self.destination[0].value
else:
saved_value = None
while len(result) < total_amount:
logger.debug("Collection %s building item of type %s" % (self, self.type))
logger.debug("Collection destination is %s, %s" % (self.destination, modifiers_package.classvars(self.destination)))
if saved_value:
self.destination[0].value = saved_value
if not saved_value and self.destination:
self.destination[0].value = kwargs['instance']
extra_modifiers = self.modifiers and self.modifiers.pop()
item = Unique.doBuild(self, modifiers + extra_modifiers)
result.append(item)
return result
def do(self, clazz):
logger.debug('%s applied to %s' % (self, clazz))
for name, value in classvars(clazz).items():
logger.debug('Checking %s attr <%s> of value %s' %
(clazz, name, value))
if value == self.construct:
logger.debug('Applying %s to the clazz %s attr <%s> with value %s' % (self, clazz, name, self.value))
self.doApply(value)
def do(self, clazz):
logger.debug('%s applied to %s' % (self, clazz))
for name, value in classvars(clazz).items():
logger.debug('Checking %s attr <%s> of value %s' %
(clazz, name, value))
if value == self.construct:
logger.debug(
'Applying %s to the clazz %s attr <%s> with value %s' %
(self, clazz, name, self.value))
self.doApply(value)
def _buildclazz(self, clazzToBuild):
[m.apply(clazz=self.clazz) for m in self.modifiers if m.shouldRun(clazz=self.clazz)]
instance = self.clazz()
logger.debug('Created new instance %s of clazz %s' % (instance, self.clazz))
for a in dir(instance):
attr = getattr(instance, a)
if isinstance(attr, construct.Construct):
logger.debug('Constructing <%s.%s>' % (self.clazz, a))
setattr(instance, a, attr.build(self.modifiers, instance=instance))
elif type(attr) == type and not a.startswith('__'):
setattr(instance, a, attr())
else:
logger.debug('<%s.%s> is not a <%s> but a <%s>' % (self.clazz, a, construct.Construct, attr))
# instance level modifier application
for modifier in self.modifiers:
if modifier.shouldRun(instance=instance):
modifier.apply(instance=instance)
return instance
def _buildclazz(self, clazzToBuild):
[m.apply(clazz=self.clazz) for m in self.modifiers if m.shouldRun(clazz=self.clazz)]
instance = self.clazz()
logger.debug('Created new instance %s of clazz %s' % (instance, self.clazz))
def make_construct(name, construct):
logger.debug('Constructing <%s.%s>' % (self.clazz, name))
setattr(instance, name, construct.build(self.modifiers, instance=instance))
logger.debug('Creating nested constructst of %s' % instance)
for name, value in getmembers(instance, lambda x: isinstance(x, construct.Construct) and not isinstance(x, construct.Uplink)):
make_construct(name, value)
logger.debug('Creating uplinks of %s' % instance)
for name, value in getmembers(instance, lambda x: isinstance(x, construct.Uplink)):
make_construct(name, value)
# instance level modifier application
for modifier in self.modifiers:
if modifier.shouldRun(instance=instance):
modifier.apply(instance=instance)
return instance
def make_construct(name, construct):
logger.debug('Constructing <%s.%s>' % (self.clazz, name))
setattr(instance, name, construct.build(self.modifiers, instance=instance))
def make_construct(name, construct):
logger.debug('Constructing <%s.%s>' % (self.clazz, name))
setattr(instance, name,
construct.build(self.modifiers, instance=instance))
def onBuild(self, *args, **kwargs):
if self.destination and kwargs.get('instance'):
logger.debug('Receiving value %s for %s' % (kwargs['instance'], self.destination))
if not self.value:
for destination in self.destination:
destination.value = kwargs['instance']
