def get_last_tid(self):
        try:
            spec = {'tid': {'$gt': 0}}
            sort = [('tid', -1)]
            row = self.db.docs.find_one(spec, sort=sort)
        except Exception as e:
            raise DatabaseException(e)
        if row:
            return row['tid']
        return 0
def connect ():
    '''
    Create the connection to the MongoDB and create 3 collections needed
    '''
    try:
        # Create the connection to the local host 
        conn = pymongo.MongoClient()
        print 'MongoDB Connection Successful'
    except pymongo.errors.ConnectionFailure, err:
        print 'MongoDB Connection Unsuccessful'
        return False