def _model_tree_iteration(self, model, visited, context):
model = IModel(model)
if model in visited:
self.log('Skiping already validated model: %r', model)
return
visited.append(model)
yield self._validate_model(model, context)
if IQueryModel.providedBy(model):
querymodel = yield model.query_items(offset=0, limit=10)
items = yield querymodel.fetch_items()
else:
try:
items = yield model.fetch_items()
except NotSupported:
self.info('Not iteration further down the model %r because '
'it doesnt support fetching items', model)
return
for item in items:
try:
submodel = yield item.fetch()
except Unauthorized:
continue
if IModel.providedBy(submodel):
subcontext = context.descend(submodel)
yield self._model_tree_iteration(submodel, visited, subcontext)
def _model_tree_iteration(self, model, visited, context):
model = IModel(model)
if model in visited:
self.log('Skiping already validated model: %r', model)
return
visited.append(model)
yield self._validate_model(model, context)
items = yield model.fetch_items()
for item in items:
submodel = yield item.fetch()
if IModel.providedBy(submodel):
subcontext = context.descend(submodel)
yield self._model_tree_iteration(submodel, visited, subcontext)
