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Code Block
package services; import org.osoa.sca.annotations.Remotable; @Remotable public interface Catalog { String Item[] get(); }

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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Code Block

package services;

import java.util.ArrayList;
import java.util.List;

import org.osoa.sca.annotations.Init;
import org.osoa.sca.annotations.Property;
import org.osoa.sca.annotations.Reference;

public class CatalogImpl implements Catalog {
	@Property
	public String currencyCode = "USD";
	@Reference
	public CurrencyConverter currencyConverter;

	private List<String>List<Item> catalog = new ArrayList<String>ArrayList<Item>();

	@Init
	public void init() {
		String currencySymbol = currencyConverter
				.getCurrencySymbol(currencyCode);
		catalog.add(new Item("Apple - ", + currencySymbol +
				+ currencyConverter.getConversion("USD", currencyCode, 2.99f99)));
		catalog.add(new Item("Orange - " +, currencySymbol +
				+ currencyConverter.getConversion("USD", currencyCode, 3.55f55)));
		catalog.add(new Item("Pear - " +, currencySymbol +
				+ currencyConverter.getConversion("USD", currencyCode, 1.55f55)));
	}

	public StringItem[] get() {
		StringItem[] catalogArray = new StringItem[catalog.size()];
		catalog.toArray(catalogArray);
		return catalogArray;
	}
}

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Code Block

package services;

import org.osoa.sca.annotations.Remotable;

@Remotable
public interface CurrencyConverter {
	    public floatdouble getConversion(String fromCurrenycCode,
	 String toCurrencyCode, floatdouble amount);
	
    public String getCurrencySymbol(String currencyCode);
}

Next create a Java class in the "services" package named "CurrencyConverterImpl" and copy-paste
the following Java class code snippet into it.

Code Block

package services;

public class CurrencyConverterImpl implements CurrencyConverter {
	    public floatdouble getConversion(String fromCurrencyCode,
		 String toCurrencyCode, floatdouble amount) {
		        if (toCurrencyCode.equals("USD"))
			            return amount;
		        else 			if (toCurrencyCode.equals("EUR"))
				return amount*0.7256f;
		            return ((double)Math.round(amount * 0.7256 * 100)) /100;
        return 0;
	    }
	
    public String getCurrencySymbol(String currencyCode) {
		        if (currencyCode.equals("USD"))
			return "$";
		else
			            return "$";
        else if (currencyCode.equals("EUR"))
				return "€";
		            return "E"; //"â‚¬";
        return "?";
	    }
}

After completing these steps the content of the "store" project will look as follows.

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Code Block

package services;

public class Item {
    	private String name;
    	private String price;
    
    
	public Item() {
    	}

    	public Item(String name, String price) {
        		this.name = name;
        		this.price = price;
    	}

    	public String getName() {
        		return name;
    	}
    
	public void setName(String name) {
		this.name        this.name = name;
    }
    = name;
	}

	public String getPrice() {
        		return price;
    }   
    	}

	public void setPrice(String price) {
        		this.price = price;
    	}
}

Create a Java interface in the "services" package named "Cart" and copy-paste the
following code snippet into it.

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Code Block
package services; import org.osoa.sca.annotations.Remotable; @Remotable public interface Total { String getTotal(); }

Create a Java class in the "services" package named "ShoppingCartImpl" and copy-paste the
following Java class code snippet into it.

Code Block

package services;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.UUID;

import org.apache.tuscany.sca.data.collection.Entry;
import org.apache.tuscany.sca.data.collection.NotFoundException;
import org.osoa.sca.annotations.Init;
import org.osoa.sca.annotations.Scope;

@Scope("COMPOSITE")
public class ShoppingCartImpl implements Cart, Total {
    
    
	private Map<String, Item> cart;
    
    @Init
    
	@Init
	public void init() {
        		cart = new HashMap<String, Item>();
    	}

    	public Entry<String, Item>[] getAll() {
        		Entry<String, Item>[] entries = new Entry[cart.size()];
        		int i = 0;
        		for (Map.Entry<String, Item> e : cart.entrySet()) {
            			entries[i++] = new Entry<String, Item>(e.getKey(), e.getValue());
        }
        		}
		return entries;
    	}

    	public Item get(String key) throws NotFoundException {
        		Item item = cart.get(key);
        		if (item == null) {
            			throw new NotFoundException(key);
        		} else {
            return item;
        }
    }

    			return item;
		}
	}

	public String post(String key, Item item) {
        		if (key == null) {
            			key = "cart-" + UUID.randomUUID().toString();
        }
        		}
		cart.put(key, item);
        		return key;
    	}

    	public void put(String key, Item item) throws NotFoundException {
        		if (!cart.containsKey(key)) {
            			throw new NotFoundException(key);
        }
        		}
		cart.put(key, item);
    	}
    
    
	public void delete(String key) throws NotFoundException {
        		if (key == null || key.equals("")) {
            			cart.clear();
        		} else {
            			Item item = cart.remove(key);
            			if (item == null)
				throw                throw new NotFoundException(key);
        }
    }

    new NotFoundException(key);
		}
	}

	public Entry<String, Item>[] query(String queryString) {
        		List<Entry<String, Item>> entries = new ArrayList<Entry<String, Item>>();
        		if (queryString.startsWith("name=")) {
            			String name = queryString.substring(5);
            for (			for (Map.Entry<String, Item> e : cart.entrySet()) {
                				Item item = e.getValue();
                				if (item.getName().equals(name)) {
                    					entries.add(new Entry<String, Item>(e.getKey(), e
							.getValue()));
                }
            }
        }
        				}
			}
		}
		return entries.toArray(new Entry[entries.size()]);
    	}
    
    
	public String getTotal() {
		double        double total total = 0;
        		String currencySymbol = "";
        		if (!cart.isEmpty()) {
            			Item item = cart.values().iterator().next();
            			currencySymbol = item.getPrice().substring(0, 1);
        }
        		}
		for (Item item : cart.values()) {
            			total += Double.valueOf(item.getPrice().substring(1));
        }
        		}
		return currencySymbol + String.valueOf(total);
    	}
}

Note: Since the Tuscany conversational support is not ready yet the cart is realized through a hack.
The cart field is defined as static.

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Code Block

<html>
<head>
<title>Store</TITLE>title>

<script type="text/javascript" src="store.js"></script>

<script language="JavaScript">

	//@Reference
	var catalog = new Reference("catalog");
	
	//@Reference
	var shoppingCart = new Reference("shoppingCart");

	//@Reference
	var shoppingTotal = new Reference("shoppingTotal");
	
	var catalogItems;

	function catalog_getResponse(items) {
		var catalog = "";
		for (var i=0; i<items.length; i++) {
			catalogvar item += items[i].name + ' - ' + items[i].price;
			catalog += '<input name="items" type="checkbox" value="' + 
						items[i]item + '">' + item items[i]+ ' <br>';
		}
		document.getElementById('catalog').innerHTML=catalog;
		catalogItems = items;
	}
	
	function shoppingCart_getResponse(feed) {
		if (feed != null) {
			var entries = feed.getElementsByTagName("entry");              
			var list = "";
			for (var i=0; i<entries.length; i++) {
				var itemcontent = entries[i].getElementsByTagName("content")[0].firstChild.nodeValue;
				var name = content.getElementsByTagName("name")[0].firstChild.nodeValue;
				var price = content.getElementsByTagName("price")[0].firstChild.nodeValue;
				list += item name + ' - ' + price + ' <br>';
			}
			document.getElementById("shoppingCart").innerHTML = list;

			document.getElementById('total').innerHTML = feed.getElementsByTagName("subtitle")[0].firstChild.nodeValue;
		}
	}if (entries.length != 0) {			
				shoppingTotal.getTotal(shoppingTotal_getTotalResponse);
			}
		}
	}
	
	function shoppingTotal_getTotalResponse(total) {
		document.getElementById('total').innerHTML = total;
	}
	
	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+><title>item</title><content type="text/xml">' +
                	'<Item xmlns="http://services/">' +
                	'<name xmlns="">' + catalogItems[i].name + '</name>' + '<price xmlns="">' + catalogItems[i].price + '</price>' +
                 	'</Item>' + '</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="store.html">'+
					document.getElementById('shoppingCart').innerHTML+
					'<br>'+
					document.getElementById('total').innerHTML+
					'<br>'+
					'<br>'+
					'<input type="submit" value="Continue Shopping">'+ 
				'</form>';
		shoppingCart.del("", null);
	}
	function deleteCart() {
		shoppingCart.del("", null);
		document.getElementById('shoppingCart').innerHTML = "";
		document.getElementById('total').innerHTML = "";
	}

 = "";	
	}	

	function init() {
		catalog.get(catalog_getResponse);
		shoppingCart.get("", shoppingCart_getResponse);
	}
	
</script>

</head>

<body><body onload="init()">
<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/Cart/">(feed)</a>
	</form>    
  </div>
</body>
</html>

After completing these steps the content of the "store" project will look as follows.

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Code Block

<?xml version="1.0" encoding="UTF-8"?>
<composite xmlns="http://www.osoa.org/xmlns/sca/1.0"
	xmlns:t="http://tuscany.apache.org/xmlns/sca/1.0"
	xmlns:s="http://store"
         
	targetNamespace="http://store" 
	name="store">
	
	<component name="store">
		<t:implementation.widget location="ufservices/store.html" />
		<service name="Widget">
			<t:binding.http uri="http://localhost:8080/"/>
		</service>
                /store" />
		</service>
		<reference name="catalog" target="Catalog">
		 	<t:binding.jsonrpc />
		 </reference>
		 <reference name="shoppingCart" target="ShoppingCart/Cart">
		 	<t:binding.atom />
		 </reference>
		 <reference name="shoppingTotal" target="ShoppingCart/Total">
		 	<t:binding.jsonrpc />
		 </reference>
	</component>
	
	<component name="Catalog">
		<implementation.java class="services.CatalogImpl" />
		<property name="currencyCode">USD</property>
		<service name="Catalog">
			<t:binding.jsonrpc uri="http://localhost:8080/Catalog"/>
		</service>
		<reference name="currencyConverter" target="CurrencyConverter" />
	</component>
	
	<component name="ShoppingCart">
		<implementation.java class="services.ShoppingCartImpl" />
		<service name="Cart">
			<t:binding.atom uri="http://localhost:8080/ShoppingCart/Cart" />
		</service>    	
		<service name="Total">
			<t:binding.jsonrpc uri="http://localhost:8080/Total"/>
		</service>    	
	</component>

	<component name="CurrencyConverter">
		<implementation.java class="services.CurrencyConverterImpl" />
	</component>
</composite>

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Versions Compared

Old Version 19

New Version 20

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