GRASP टेम्पलेट: सूचना विशेषज्ञ

परिचय

• सूचना विशेषज्ञ
• रचनाकार
• नियंत्रक
• कम युग्मन
• उच्च सामंजस्य
• बहुरूपता
• शुद्ध कपड़ा
• अविवेक
• संरक्षित विविधताएँ

सूचना विशेषज्ञ

शब्दों

उल्लंघन का उदाहरण

@Getter
@AllArgsConstructor
public class Order {
    private List<OrderItem> orderItems;
    private String destinationAddress;
}

@Getter
@AllArgsConstructor
public class OrderItem {
    private Good good;
    private int amount;
}

@Getter
@AllArgsConstructor
public class Good {
    private String name;
    private int price;
}

public class Client {
    public void doSmth() {
        
    }
    
    private int getOrderPrice(Order order) {
        List<OrderItem> orderItems = order.getOrderItems();
        
        int result = 0;
        
        for (OrderItem orderItem : orderItems) {
            int amount = orderItem.getAmount();
            
            Good good = orderItem.getGood();
            int price = good.getPrice();
            
            result += price * amount;
        }
        
        return result;
    }
}

आवेदन उदाहरण

@Getter
@AllArgsConstructor
public class Order {
    private List<OrderItem> orderItems;
    private String destinationAddress;
    
    public int getPrice() {
        int result = 0;
        
        for(OrderItem orderItem : orderItems) {
            result += orderItem.getPrice();
        }
        
        return result;
    }
}

@Getter
@AllArgsConstructor
public class OrderItem {
    private Good good;
    private int amount;

    public int getPrice() {
        return amount * good.getPrice();
    }
}

@Getter
@AllArgsConstructor
public class Good {
    private String name;
    private int price;
}

public class Client {
    public void doSmth() {
        Order order = new Order(new ArrayList<>(), "");
        order.getPrice();
    }
}

निष्कर्ष