THIS IS A TEST INSTANCE. ALL YOUR CHANGES WILL BE LOST!!!!
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The first thing you do is to create a folder on you disk into which you will download the TUSCANY distribution.
Next you download the latest release distribution. Launch your browser and enter one of the
following URL's.
Latest Release - http://cwiki.apache.org/TUSCANY/sca-java-releases.html
Download both the bin zip as well as the src zip to the folder that you created on your disk. Once
you completed the download you should see the following on your disk.
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package services;
import org.osoa.sca.annotations.Remotable;
@Remotable
public interface Catalog {
String[] get();
}
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Select the "services" package again. Select the New Java Class button 
. In the dialog enter
"CatalogImpl" as the Name of the class, add "Catalog" as the interface this class implements, and
then select Finish to complete the dialog.
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package services;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import java.util.UUID;
import org.apache.tuscany.sca.binding.feed.collection.Collection;
import org.apache.tuscany.sca.binding.feed.collection.NotFoundException;
import com.sun.syndication.feed.atom.Content;
import com.sun.syndication.feed.atom.Entry;
import com.sun.syndication.feed.atom.Feed;
import com.sun.syndication.feed.atom.Link;
public class ShoppingCartImpl implements Collection {
// needs to change to instance var once conversation scope works
private static Map<String, Entry> cart = new HashMap<String, Entry>();
public Feed getFeed() {
Feed feed = new Feed();
feed.setTitle("shopping cart");
Content subtitle = new Content();
subtitle.setValue("Total : " + getTotal());
feed.setSubtitle(subtitle);
feed.getEntries().addAll(cart.values());
return feed;
}
public Entry get(String id) throws NotFoundException {
return cart.get(id);
}
public Entry post(Entry entry) {
String id = "cart-" + UUID.randomUUID().toString();
entry.setId(id);
Link link = new Link();
link.setRel("edit");
link.setHref("" + id);
entry.getOtherLinks().add(link);
link = new Link();
link.setRel("alternate");
link.setHref("" + id);
entry.getAlternateLinks().add(link);
entry.setCreated(new Date());
cart.put(id, entry);
return entry;
}
public Entry put(String id, Entry entry) throws NotFoundException {
entry.setUpdated(new Date());
cart.put(id, entry);
return entry;
}
public void delete(String id) throws NotFoundException {
if (id.equals(""))
cart.clear();
else
cart.remove(id);
} private String getTotal() {
float total = 0;
String symbol = "";
if (!cart.isEmpty()) {
Entry entry = cart.values().iterator().next();
String item = ((Content)entry.getContents().get(0)).getValue();
symbol = item.substring(item.indexOf("-")+2, item.indexOf("-")+3);
}
for (Entry entry : cart.values()) {
String item = ((Content)entry.getContents().get(0)).getValue();
total += Float.valueOf(item.substring(item.indexOf("-")+3));
}
return symbol + String.valueOf(total);
}
}
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Note: Since the Tuscany conversational support is not ready yet the cart is realized through a hack.
The cart field is defined as static.
After completing these steps the content of the "store" project will look as follows.
Store
In this step you create the user facing Store service that will run in a Web browser and provide the
user interface to the other services you created.
Select the "ufservices" package. Right click to get the context menu, select New, and then File. In
the New File dialog enter "store.html" for the File name, and then select Finish to complete the
dialog.
The Text editor will open on the new created html file. Replace the content of the editor by copy-paste
of the following html snippet.
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<html>
<head>
<title>Store</title>
<script type="text/javascript" src="binding-atom.js"></script>
<script type="text/javascript" src="binding-jsonrpc.js"></script>
<script language="JavaScript">
//Reference
catalog = (new JSONRpcClient("../Catalog")).Catalog;
//Reference
shoppingCart = new AtomClient("../ShoppingCart");
function catalog_getResponse(items) {
var catalog = "";
for (var i=0; i<items.length; i++)
catalog \+= '<input name="items" type="checkbox" value="' +
items\[i\] + '">' + items\[i\]\+ ' <br>';
document.getElementById('catalog').innerHTML=catalog;
}
function shoppingCart_getResponse(feed) {
if (feed \!= null) {
var entries = feed.getElementsByTagName("entry");
var list = "";
for (var i=0; i<entries.length; i++) {
var item =
entries\[i\].getElementsByTagName("content")\[0\].firstChild.nodeValue;
list \+= item + ' <br>';
}
document.getElementById("shoppingCart").innerHTML = list;
if (list \!= "") {
document.getElementById('total').innerHTML =
feed.getElementsByTagName("subtitle")\[0\].firstChild.nodeValue;
}
}
function shoppingCart_postResponse(entry) {
shoppingCart.get("", shoppingCart_getResponse);
}
function addToCart() {
var items = document.catalogForm.items;
var j = 0;
for (var i=0; i<items.length; i++)
if (items\[i\].checked) {
var entry = '<entry xmlns="http://www.w3.org/2005/Atom">' +
'<title>cart-item</title>' +
'<content type="text">'+items\[i\].value+'</content>' +
'</entry>';
shoppingCart.post(entry, shoppingCart_postResponse);
items\[i\].checked = false;
}
}
function checkoutCart() {
document.getElementById('store').innerHTML='<h2>' +
'Thanks for Shopping With Us\!</h2>'\+
'<h2>Your Order</h2>'\+
'<form name="orderForm" action="/ufs/store.html">'\+
document.getElementById('shoppingCart').innerHTML\+
'<br>'\+
document.getElementById('total').innerHTML\+
'<br>'\+
'<br>'\+
'<input type="submit" value="Continue Shopping">'\+
'</form>';
shoppingCart.delete("", null);
}
function deleteCart() {
shoppingCart.delete("", null);
document.getElementById('shoppingCart').innerHTML = "";
document.getElementById('total').innerHTML = "";
}
window.onload = function() {
catalog.get(catalog_getResponse);
shoppingCart.get("", shoppingCart_getResponse);
}
</script>
<link rel="stylesheet" type="text/css" href="style.css" /></head><body>
<h1>Store</h1>
<div id="store">
<h2>Catalog</h2>
<form name="catalogForm">
<div id="catalog" ></div>
<br>
<input type="button" onClick="addToCart()" value="Add to Cart">
</form>
<br>
<h2>Your Shopping Cart</h2>
<form name="shoppingCartForm">
<div id="shoppingCart"></div>
<br>
<div id="total"></div>
<br>
<input type="button" onClick="checkoutCart()" value="Checkout">
<input type="button" onClick="deleteCart()" value="Empty">
<a href="../ShoppingCart/">
<img src="http://projects.apache.org/images/blue-icon.png" border="0">
</a>
</form>
</div>
</body>
</html>
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<<Under construction >>