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Food

Food ID (Identifier)​

The food ID is the UUID.

Food (Entity)​

The food is food in a container. The food cannot exist without the name and the category, but the unit, quantity, and expiry are optional.

Food Name​

The length of the food name must be less than equal 30 and greater than 0.

Unit (Value Object)​

The length of unit must be less than equal to 20 characters. The unit can be changed after setting.

Quantity (Value Object)​

The quantity can be null or 0. It also can be the float. In this case, the effective digit is 2, and less than that is discarded. The reason for adopting discarding instead of rounding is to avoid increasing quantity which is an unnatural phenomenon.

Expiry (Value Object)​

The expiry is the expiration date. The expiry can be a past date.

Category​

Each food entity must have only one category.

CreatedAt​

Each food entity must have the creation date. This cannot be modified.