def make_persistent(self, instance):
print 'Make persistent called with %s' % (instance,)
if not IPersistent.providedBy(instance):
print '\tIPersistent not provided, directly providing'
directly_provides(instance, IPersistent)
persistent = IPersistentObject(instance)
self._configure_persistence(persistent)
persistent.set_unsaved()
self.notify_modified(instance)
def make_persistent(self, instance):
print 'Make persistent called with %s' % (instance, )
if not IPersistent.providedBy(instance):
print '\tIPersistent not provided, directly providing'
directly_provides(instance, IPersistent)
persistent = IPersistentObject(instance)
self._configure_persistence(persistent)
persistent.set_unsaved()
self.notify_modified(instance)
def store(self, instance):
written = {}
persistent = IPersistentObject(instance)
oid = persistent.get_oid()
instance = persistent.get_object()
print 'Store %s with OID %s' % (instance, oid)
transformation_writer = self.writer_factory(instance)
transformation_writer.set_manager(self)
for instance in transformation_writer:
persistent = IPersistentObject(instance)
oid = persistent.get_oid()
if written.has_key(oid):
continue
if persistent.is_persistent() and not persistent.is_saved():
instance = persistent.get_object()
transformation = transformation_writer.write(instance)
print '\t-> storing %s with OID %s' % (instance, oid)
self.storage.store_record(oid, transformation)
written[oid] = None
persistent.set_saved()
self.cache.add_instance(oid, instance)
else: print '\t-> not storing %s with OID %s' % (instance, oid)
def get_oid(self, instance):
print 'get_oid(%s)' % (instance, )
if isinstance(instance, _never_persistent):
print '\t-> None, is instance of _never_persistent'
return None
if type(instance) in (dict, list):
print '\t-> None, type in dict, list'
return None
if not IPersistent.providedBy(instance):
print '\t-> None, IPersistent not provided by instance'
return None
persistent = IPersistentObject(instance)
if persistent.get_oid() is None:
self._configure_persistence(persistent)
persistent.set_loaded()
persistent.set_unsaved()
elif not persistent.is_persistent():
print '\t-> None, not persistent.is_persistent()'
return None
oid = persistent.get_oid()
print '\t%s OID => %s' % (instance, oid)
return oid
def load(self, oid):
print 'Loading %s' % oid
instance = self.cache.get_instance(oid, None)
if instance is None or isinstance(instance, DeferredObject):
transformation = self.storage.load_record(oid)
instance = self._transformation_reader.read(transformation)
persistent = IPersistentObject(instance)
self._configure_persistence(persistent, oid)
persistent.set_loaded()
persistent.set_saved()
instance = persistent.get_object()
else:
print '\tloaded from cache!'
print '\tload(%s) -> %s' % (oid, instance)
return instance
def get_oid(self, instance):
print 'get_oid(%s)' % (instance,)
if isinstance(instance, _never_persistent):
print '\t-> None, is instance of _never_persistent'
return None
if type(instance) in (dict, list):
print '\t-> None, type in dict, list'
return None
if not IPersistent.providedBy(instance):
print '\t-> None, IPersistent not provided by instance'
return None
persistent = IPersistentObject(instance)
if persistent.get_oid() is None:
self._configure_persistence(persistent)
persistent.set_loaded()
persistent.set_unsaved()
elif not persistent.is_persistent():
print '\t-> None, not persistent.is_persistent()'
return None
oid = persistent.get_oid()
print '\t%s OID => %s' % (instance, oid)
return oid
def load(self, oid):
print 'Loading %s' % oid
instance = self.cache.get_instance(oid, None)
if instance is None or isinstance(instance, DeferredObject):
transformation = self.storage.load_record(oid)
instance = self._transformation_reader.read(transformation)
persistent = IPersistentObject(instance)
self._configure_persistence(persistent, oid)
persistent.set_loaded()
persistent.set_saved()
instance = persistent.get_object()
else:
print '\tloaded from cache!'
print '\tload(%s) -> %s' % (oid, instance)
return instance
def make_transient(self, instance):
persistent = IPersistentObject(instance)
persistent.disable_persistence()
persistent.clear_manager()
def notify_modified(self, instance):
persistent = IPersistentObject(instance)
self.policy.note_modified(persistent)
def make_transient(self, instance):
persistent = IPersistentObject(instance)
persistent.disable_persistence()
persistent.clear_manager()
def store(self, instance):
written = {}
persistent = IPersistentObject(instance)
oid = persistent.get_oid()
instance = persistent.get_object()
print 'Store %s with OID %s' % (instance, oid)
transformation_writer = self.writer_factory(instance)
transformation_writer.set_manager(self)
for instance in transformation_writer:
persistent = IPersistentObject(instance)
oid = persistent.get_oid()
if written.has_key(oid):
continue
if persistent.is_persistent() and not persistent.is_saved():
instance = persistent.get_object()
transformation = transformation_writer.write(instance)
print '\t-> storing %s with OID %s' % (instance, oid)
self.storage.store_record(oid, transformation)
written[oid] = None
persistent.set_saved()
self.cache.add_instance(oid, instance)
else:
print '\t-> not storing %s with OID %s' % (instance, oid)
