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from kyotocabinet import *
import sys
# create the database object
db = DB()
# open the database
if not db.open("casket.kch", DB.OREADER):
print("open error: " + str(db.error()), file=sys.stderr)
# define the visitor
class VisitorImpl(Visitor):
# call back function for an existing record
def visit_full(self, key, value):
print("{}:{}".format(key.decode(), value.decode()))
return self.NOP
# call back function for an empty record space
def visit_empty(self, key):
print("{} is missing".format(key.decode()), file=sys.stderr)
return self.NOP
visitor = VisitorImpl()
# retrieve a record with visitor
if not db.accept("foo", visitor, False) or \
not db.accept("dummy", visitor, False):
print("accept error: " + str(db.error()), file=sys.stderr)
# traverse records with visitor
if not db.iterate(visitor, False):
print("iterate error: " + str(db.error()), file=sys.stderr)
# close the database
if not db.close():
print("close error: " + str(db.error()), file=sys.stderr)
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