1 files changed, 113 insertions, 0 deletions
diff --git a/sca-cpp/branches/lightweight-sca/samples/store-java/store/ShoppingCartImpl.java b/sca-cpp/branches/lightweight-sca/samples/store-java/store/ShoppingCartImpl.java
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@@ -0,0 +1,113 @@
+/*
+ * 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.
+ */
+
+package store;
+
+import static org.apache.tuscany.IterableUtil.*;
+import static org.apache.tuscany.UUIDUtil.*;
+
+import org.apache.tuscany.Service;
+
+/**
+ * Shopping cart component implementation.
+ */
+public class ShoppingCartImpl {
+
+    static String cartId = "1234";
+
+    /**
+     * Get the shopping cart from the cache. Return an empty cart if not found.
+     */
+    public Iterable<?> getcart(final String id, final Service cache) {
+        final Iterable<String> iid = list(id);
+        final Iterable<?> cart = cache.get(iid);
+        if(cart == null)
+            return list();
+        return cart;
+    }
+
+    /**
+     * Post a new item to the cart. Create a new cart if necessary.
+     */
+    public Iterable<String> post(final Iterable<String> collection, final Iterable<?> item, final Service cache) {
+        final String id = uuid();
+        final Iterable<?> newItem = list("'entry", cadr(car(item)), list("'id", id), cadddr(car(item)));
+        final Iterable<?> cart = cons(newItem, this.getcart(cartId, cache));
+        final Iterable<String> iid = list(cartId);
+        cache.put(iid, cart);
+        return list(id);
+    }
+
+    /**
+     * Find an item in the cart.
+     */
+    Iterable<?> find(final String id, final Iterable<?> cart) {
+        if(isNil(cart))
+            return list(list("'entry", list("'title", "Item"), list("'id", "0")));
+        if(id.equals(cadr(caddr(car(cart)))))
+            return list(car(cart));
+        return this.find(id, cdr(cart));
+    }
+
+    /**
+     * Return items from the cart.
+     */
+    public Iterable<?> get(final Iterable<String> id, final Service cache) {
+        if(isNil(id))
+            return list(append(list("'feed", list("'title", "Your Cart"), list("'id", cartId)), this.getcart(cartId, cache)));
+        return this.find((String)car(id), this.getcart(cartId, cache));
+    }
+
+    /**
+     * Delete items from the cart.
+     */
+    public Boolean delete(final Iterable<String> id, final Service cache) {
+        if(isNil(id)) {
+            final Iterable<String> iid = list(cartId);
+            return cache.delete(iid);
+        }
+        return true;
+    }
+
+    /**
+     * Return the price of an item.
+     */
+    Double price(final Iterable<?> item) {
+        System.err.println("price!! " + cadr(cadddr(item)));
+        return Double.valueOf((String)cadr(assoc("'price", cdr(cadr(cadddr(item))))));
+    }
+
+    /**
+     * Sum the prices of a list of items.
+     */
+    Double sum(final Iterable<?> items) {
+        if(isNil(items))
+            return 0.0;
+        return this.price((Iterable<?>)car(items)) + this.sum(cdr(items));
+    }
+
+    /**
+     * Return the total price of the items in the cart.
+     */
+    public Double total(final Service cache) {
+        final Iterable<?> cart = this.getcart(cartId, cache);
+        return this.sum(cart);
+    }
+
+}