def samples(self):
"""
Return iterator of all samples collected during this visit.
"""
linkage_query = '"{}"[linkage.collected_during]'.format(self.id)
query = iHMPSession.get_session().get_osdf().oql_query
for page_no in count(1):
res = query(Visit.namespace, linkage_query, page=page_no)
res_count = res['result_count']
for doc in res['results']:
yield Sample.load_sample(doc)
res_count -= len(res['results'])
if res_count < 1:
break
