49b878b1b0
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1079292 13f79535-47bb-0310-9956-ffa450edef68
75 lines
2.2 KiB
Python
75 lines
2.2 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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# Shopping cart implementation
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import uuid
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import sys
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cartId = "1234"
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# Get the shopping cart from the cache
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# Return an empty cart if not found
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def getcart(id, cache):
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cart = cache.get((id,))
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if cart is None:
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return ()
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return cart
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# Post a new item to the cart, create a new cart if necessary
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def post(collection, item, cache):
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id = str(uuid.uuid1())
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cart = (("'entry", item[0][1], ("'id", id), item[0][3]),) + getcart(cartId, cache)
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cache.put((cartId,), cart)
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return (id,)
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# Find an item in the cart
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def find(id, cart):
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if cart == ():
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return (("'entry", ("'title", "Item"), ("'id", 0)),)
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elif id == cart[0][2][1]:
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return (cart[0],)
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else:
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return find(id, cart[1:])
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# Get items from the cart
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def get(id, cache):
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if id == ():
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return ((("'feed", ("'title", "Your Cart"), ("'id", cartId)) + getcart(cartId, cache)),)
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return find(id[0], getcart(cartId, cache))
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# Delete items from the cart
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def delete(id, cache):
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if id == ():
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return cache.delete((cartId,))
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return True
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# Return the price of an item
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def price(item):
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return float(filter(lambda x: x[0] == "'price", item[3][1][1:])[0][1])
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# Sum the prices of a list of items
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def sum(items):
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if items == ():
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return 0
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return price(items[0]) + sum(items[1:])
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# Return the total price of the items in the cart
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def total(cache):
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cart = getcart(cartId, cache)
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return sum(cart)
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