import csv
import shutil
from datetime import datetime
import surf
from rdflib.plugins.sleepycat import Sleepycat
__all__ = ('create_book', 'create_member', 'create_loan', 'populate', 'query',
'persist_to_rdf', 'Book', 'Member', 'Loan', 'persist', 'raw_query')
# create the store
sc = Sleepycat()
sc.open("db")
store = surf.Store(reader="rdflib", writer="rdflib", rdflib_store=sc)
session = surf.Session(store)
# defines the prefixes
NAMESPACES = {
'bc': 'http://notmyidea.org/bookclub/',
'foaf': 'http://xmlns.com/foaf/0.1/',
'book': 'http://purl.org/NET/book/vocab/',
'dct': 'http://purl.org/dc/terms/'
}
# register the namespaces used here
surf.ns.register(bc="http://notmyidea.org/bookclub/")
surf.ns.register(book="http://purl.org/NET/book/vocab/")
# map class with namespaces
Book = session.get_class(surf.ns.BC.Book)
Member = session.get_class(surf.ns.BC.Member)
for t in active_threads:
if not commit_pending_transaction:
self.rollback(rollback_root=True)
else:
self.commit(commit_root=True)
sleep(0.1)
# there may still be open transactions
super(BerkeleyDB, self).close()
def add(self, (subject, predicate, object_), context, quoted=False):
@transaction
def _add(self, (subject, predicate, object_), context, quoted, txn=None):
Sleepycat.add(self, (subject, predicate, object_), context, quoted, txn)
try:
_add(self, (subject, predicate, object_), context, quoted)
except Exception, e:
# print "Got exception in _add: ", e
raise e
def remove(self, (subject, predicate, object_), context):
@transaction
def _remove(self, (subject, predicate, object_), context, txn=None):
Sleepycat.remove(self, (subject, predicate, object_), context, txn=txn)
try:
_remove(self, (subject, predicate, object_), context)