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package uk.co.initech.sandbox;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;
@Entity
@Table(name="Order_")
public class Order {
@Id
private String id;
@OneToMany(mappedBy = "order", cascade = CascadeType.ALL)
private Set<OrderLine> lines = new HashSet<OrderLine>();
public Order(String id) {
this.id = id;
}
protected Order() {}
public String getId() {
return id;
}
public void setLines(Set<OrderLine> lines) {
this.lines = lines;
}
public Set<OrderLine> getLines() {
return lines;
}
@Override
public int hashCode() {
return id.hashCode();
}
@Override
public boolean equals(Object that) {
return (this == that) || ((that instanceof Order) && this.id.equals(((Order) that).id));
}
}
package uk.co.initech.sandbox;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.IdClass;
import javax.persistence.ManyToOne;
@Entity
@IdClass(OrderLine.Key.class)
public class OrderLine {
public static class Key {
private String order;
private String productId;
public Key(String order, String productId) {
this.order = order;
this.productId = productId;
}
@Override
public int hashCode() {
return order.hashCode() + (productId.hashCode() << 1);
}
@Override
public boolean equals(Object that) {
return (this == that) || ((that instanceof Key) && this.order.equals(((Key) that).order) && this.productId.equals(((Key) that).productId));
}
}
@Id
@ManyToOne
private Order order;
@Id
private String productId;
private int quantity;
public OrderLine(Order order, String productId, int quantity) {
this.order = order;
this.productId = productId;
this.quantity = quantity;
}
protected OrderLine() {}
public Key getId() {
return new Key(order.getId(), productId);
}
public Order getOrder() {
return order;
}
public String getProductId() {
return productId;
}
public int getQuantity() {
return quantity;
}
public void setQuantity(int quantity) {
this.quantity = quantity;
}
@Override
public int hashCode() {
return getId().hashCode();
}
@Override
public boolean equals(Object that) {
return (this == that) || ((that instanceof OrderLine) && this.getId().equals(((OrderLine) that).getId()));
}
}
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