sandromancuso / ShoppingBasketBuilder.java

Created March 06, 2012


    
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      ShoppingBasketBuilder.java
    
    
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            public class ShoppingBasketBuilder {
 
    private Map<Product, Integer> products = new HashMap<Product, Integer>();
 
    public static ShoppingBasketBuilder aShoppingBasket() {
        return new ShoppingBasketBuilder();
    }
    
    public ShoppingBasketBuilder with(Product product) {
        this.products.put(product, 1);
        return this;
    }
    
    public ShoppingBasketBuilder with(ProductBuilder productBuilder) {
        return with(productBuilder.build());
    }
    
    public ShoppingBasketBuilder with(Integer quantity, Product product) {
        this.products.put(product, quantity);
        return this;
    }
    
    public ShoppingBasketBuilder with(Integer quantity, ProductBuilder productBuider) {
        return with(quantity, productBuider.build());
    }
    
    public ShoppingBasket build() {
        ShoppingBasket shoppingBasket = new ShoppingBasket();
        for (Map.Entry<Product, Integer> entry : products.entrySet()) {
            shoppingBasket.add(entry.getKey(), entry.getValue());
        }
        return shoppingBasket;
    }
 
}