def renewal_for(self, registration):
"""Find a renewal for this registration.
If there's more than one, find the best one.
"""
renewals = []
renewal = None
for regnum in registration.regnums:
renum = regnum.replace("-", "")
if regnum in self.renewals:
renewals.extend(self.renewals[regnum])
if renewals:
renewals, disposition = self.best_renewal(registration, renewals)
registration.disposition = disposition
else:
registration.disposition = "Not renewed."
renewals = []
if not renewals:
# We'll count it as a decent match if we can find a
# renewal based solely on title/author.
#
# n.b. right now there seem to be no such matches.
key = registration.renewal_key
renewals_for_key = self.renewals_by_key[key]
if renewals_for_key:
renewals, disposition = self.best_renewal(
registration, renewals_for_key)
registration.disposition = "Possibly renewed, based solely on title/author match."
if not renewals:
# We'll count it as a tentative match if there has _ever_ been a renewal
# for a book with a nearly-identical title.
title = Registration._normalize_text(
registration.title) or registration.title
renewals_for_title = self.renewals_by_title[title]
if renewals_for_title:
renewals, disposition = self.best_renewal(
registration, renewals_for_title)
registration.disposition = "Possibly renewed, based solely on title match."
for renewal in renewals:
# These renewals have been matched; they should not be
# output in the list of unmatched renewals.
self.used_renewals.add(renewal)
return renewals
def __init__(self, renewals_input_path):
self.renewals = defaultdict(list)
self.renewals_by_title = defaultdict(list)
self.renewals_by_key = defaultdict(list)
for i in open(renewals_input_path):
renewal = Renewal(**json.loads(i))
regnum = renewal.regnum
if not regnum:
regnum = []
if not isinstance(regnum, list):
regnum = [regnum]
for r in regnum:
r = (r or "").replace("-", "")
self.renewals[r].append(renewal)
title = Registration._normalize_text(
renewal.title) or renewal.title
self.renewals_by_title[title].append(renewal)
self.renewals_by_key[renewal.renewal_key].append(renewal)
self.used_renewals = set()
