diff options
author | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-12-25 01:49:19 +0000 |
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committer | jsdelfino <jsdelfino@13f79535-47bb-0310-9956-ffa450edef68> | 2010-12-25 01:49:19 +0000 |
commit | dc15dc32bb3348c760ba3643c083af7e0c8e43fe (patch) | |
tree | 2823b9165d5c3a8a1bc96b3d071f86101bb995b4 /sandbox/sebastien/cpp/apr-2/samples/store-sql/shopping-cart.scm | |
parent | 088b2e47386078c79781a448e0b6e458ddaae23c (diff) |
Create a sandbox branch to experiment with latest APR.
git-svn-id: http://svn.us.apache.org/repos/asf/tuscany@1052740 13f79535-47bb-0310-9956-ffa450edef68
Diffstat (limited to 'sandbox/sebastien/cpp/apr-2/samples/store-sql/shopping-cart.scm')
-rw-r--r-- | sandbox/sebastien/cpp/apr-2/samples/store-sql/shopping-cart.scm | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/sandbox/sebastien/cpp/apr-2/samples/store-sql/shopping-cart.scm b/sandbox/sebastien/cpp/apr-2/samples/store-sql/shopping-cart.scm new file mode 100644 index 0000000000..61b169426f --- /dev/null +++ b/sandbox/sebastien/cpp/apr-2/samples/store-sql/shopping-cart.scm @@ -0,0 +1,82 @@ +; 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. + +; Shopping cart implementation + +(define cartId "1234") + +; Get the shopping cart from the cache +; Return an empty cart if not found +(define (getcart id cache) + (define cart (cache "get" (list id))) + (if (nul cart) + (list) + cart) +) + +; Post a new item to the cart, create a new cart if necessary +(define (post collection item cache) + (define id (uuid)) + (define newItem (list (car item) id (caddr item))) + (define cart (cons newItem (getcart cartId cache))) + (cache "put" (list cartId) cart) + (list id) +) + +; Find an item in the cart +(define (find id cart) + (if (nul cart) + (cons "Item" (list "0" (list))) + (if (= id (cadr (car cart))) + (car cart) + (find id (cdr cart)))) +) + +; Get items from the cart +(define (get id cache) + (if (nul id) + (cons "Your Cart" (cons cartId (getcart cartId cache))) + (find (car id) (getcart cartId cache)) + ) +) + +; Delete items from the cart +(define (delete id cache) + (if (nul id) + (cache "delete" (list cartId)) + true + ) +) + +; Return the price of an item +(define (price item) + (cadr (assoc 'price (caddr item))) +) + +; Sum the prices of a list of items +(define (sum items) + (if (nul items) + 0 + (+ (price (car items)) (sum (cdr items)))) +) + +; Return the total price of the items in the cart +(define (total cache) + (define cart (getcart cartId cache)) + (sum cart) +) + |