#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
"""Nexmark model.
The nexmark suite is a series of queries (streaming pipelines) performed
on a simulation of auction events. The model includes the three roles that
generate events:
- The person who starts and auction or makes a bid (Person).
- The auction item (Auction).
- The bid on an item for auction (Bid).
"""
[docs]class Person(object):
"Author of an auction or a bid."
def __init__(
self, id, name, email, credit_card, city, state, timestamp, extra=None):
self.id = id
self.name = name
self.email = email # key
self.credit_card = credit_card
self.city = city
self.state = state
self.timestamp = timestamp
self.extra = extra
def __repr__(self):
return 'Person({id}, {email})'.format(
**{
'id': self.id, 'email': self.email
})
[docs]class Auction(object):
"Item for auction."
def __init__(
self,
id,
item_name,
description,
initial_bid,
reserve_price,
timestamp,
expires,
seller,
category,
extra=None):
self.id = id
self.item_name = item_name # key
self.description = description
self.initial_bid = initial_bid
self.reserve_price = reserve_price
self.timestamp = timestamp
self.expires = expires
self.seller = seller
self.category = category
self.extra = extra
def __repr__(self):
return 'Auction({id}, {item_name})'.format(
**{
'id': self.id, 'item_name': self.item_name
})
[docs]class Bid(object):
"A bid for an item for auction."
def __init__(self, auction, bidder, price, timestamp, extra=None):
self.auction = auction # key
self.bidder = bidder
self.price = price
self.timestamp = timestamp
self.extra = extra
def __repr__(self):
return 'Bid({auction}, {bidder}, {price})'.format(
**{
'auction': self.auction, 'bidder': self.bidder, 'price': self.price
})