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Item.java
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Item.java
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import java.math.BigInteger;
import java.util.Date;
import java.util.Objects;
public class Item implements Comparable<Item> {
private String itemName;
// 659 879 897 646 897 456
// int 2 147 483 647
// long 9 223 372 036 854 775 807
private BigInteger code;
private int quantity;
private Date expirationData;
public Item() {
}
public Item(String itemName, BigInteger code, int quantity, Date expirationData) {
this.itemName = itemName;
this.code = code;
this.quantity = quantity;
this.expirationData = expirationData;
}
public String getItemName() {
return itemName;
}
public void setItemName(String itemName) {
this.itemName = itemName;
}
public BigInteger getCode() {
return code;
}
public void setCode(BigInteger code) {
this.code = code;
}
public int getQuantity() {
return quantity;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
public Date getExpirationData() {
return expirationData;
}
public void setExpirationData(Date expirationData) {
this.expirationData = expirationData;
}
@Override
public String toString() {
return "Item{" +
"itemName='" + itemName + '\'' +
", code=" + code +
", quantity=" + quantity +
", expirationData=" + expirationData +
'}';
}
@Override
public int compareTo(Item itm) {
//Order by item name
int result = itemName.compareTo(itm.itemName);
//If names are equal order by code
if (result == 0) {
result = code.compareTo(itm.code);
}
return result;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Item item = (Item) o;
return itemName.equals(item.itemName) &&
code.equals(item.code) &&
expirationData.equals(item.expirationData);
}
@Override
public int hashCode() {
return Objects.hash(itemName, code, expirationData);
}
// Merges equal elements in list
public Item merge(Item other) {
assert (this.equals(other));
return new Item(this.itemName, this.code, this.quantity + other.quantity, this.expirationData);
}
}