def db_finish(self):
now = time.time()
self.db.update('scan', where="id = "+str(self.id),
triples=self.c,
time_complete=now,
status=1)
for (term, use) in (self.term_uses.keys()):
(ns, local) = splitter.split(term)
nsid = irimap.to_id(self.db, ns)
self.db.insert('term_use',
local=local,
namespace_id = nsid,
scan_id = self.id,
type = use,
count = self.term_uses[(term,use)]
)
for t in self.primary_trackers:
self.db.insert('trackers',
scan_id = self.id,
tracker_id = irimap.to_id(self.db, t),
is_primary = True
)
for t in self.backup_trackers:
self.db.insert('trackers',
scan_id = self.id,
tracker_id = irimap.to_id(self.db, t),
is_primary = False
)
obsolete_old_scans(self.db, self.data_source_iri, self.id)
def list_(term, timecode=(-1), db=None): # , limit, offset):
"""
see http://dev.mysql.com/doc/refman/5.0/en/select.html
for us, timecodes ARE scanids. A new scanid == a new change.
are we going to need to SORT when we do limit/offset? pagerank?
"""
if db is None:
db = dbconn.Connection()
(ns, local) = splitter.split(term)
ns_id = irimap.to_id(db, ns)
if timecode == -1:
timecode = latest_timecode(db)
print "list using latest timecode:", timecode
else:
if timecode < min_timecode(db):
raise GarbageTimecode()
for r in db.query('select text, type from term_use, scan, iri where scan_id <= $timecode and obsoleted_by > $timecode and namespace_id=$ns_id and scan.id=scan_id and status=1 and local=$local and iri.id=source_id', vars=locals()):
yield unicode(r.type)+" "+unicode(r.text)
def obsolete_old_scans(db, source, scan_id):
source_id = irimap.to_id(db, source)
max = max_timecode
db.update('scan',
where='id < $scan_id and source_id = $source_id and obsoleted_by = $max',
obsoleted_by=scan_id,
vars=locals())
def db_show(db, source, ns):
good = get_latest_scan(db, source)
scan_id = good.id
ns_id = irimap.to_id(db, ns)
print `good`
for r in db.select('term_use',
where='scan_id=$scan_id and namespace_id=$ns_id',
vars=locals()):
print r.count, r.local
def db_start(self):
debug('scan', 'database connection started')
self.source_id = irimap.to_id(self.db, self.data_source_iri)
self.id = self.db.insert('scan',
source_id=self.source_id,
time_begun=self.start,
triples=0,
last_modified=self.last_modified,
status=0, # or just use time_completed?
obsoleted_by=max_timecode
)
debug('scan', 'database record created', self.id)
def report(source, ns):
"""
Return a report [in std format?] of the given source, those
entries in the given namespace
"""
db = dbconn.Connection()
scan = ensure_scanned(db, source)
scan_id = scan.id
ns_id = irimap.to_id(db, ns)
results = db.select('term_use',
where="scan_id=$scan_id and namespace_id=$ns_id",
vars=locals())
out = u""
for r in results:
out += "%d %s %s\n" % (r.count, r.type, r.local)
del db
return out
def get_latest_scan(db, source, all_scan_ids=None):
'''Return a record of the latest completed scan of this source.
If an array all_scan_ids is provided, all the scan ids will be
appended to it.
'''
source_id = irimap.to_id(db, source)
max_good_id = -1
if all_scan_ids is None:
all_scan_ids = []
for r in db.select('scan', where='source_id=$source_id', vars=locals()):
if r.status == 1 and r.id > max_good_id:
max_good_id = r.id
rr = copy.deepcopy(r)
all_scan_ids.append(r.id)
if max_good_id > -1:
return rr
else:
raise NoGoodScan()
