java 供应商实体使用JPA注释创建一个可以与项目关联+将其持久性级联到项目，以便它们可以成为sav

Posted 2021-05-08

package com.project.model;

import java.util.ArrayList;
import java.util.List;

import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.Table;

import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonManagedReference;

@Entity
@Table(name="supplier")
public class Supplier {

	@Id
	@GeneratedValue(strategy=GenerationType.AUTO)
	private long id;
	
	private String name;
	
	private String phone;
	
	@JsonManagedReference
	@OneToMany(mappedBy="supplier", cascade={CascadeType.PERSIST, CascadeType.MERGE})
	private List<Item> items = new ArrayList<Item>();

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getPhone() {
		return phone;
	}

	public void setPhone(String phone) {
		this.phone = phone;
	}

//	@JsonIgnore // to not get all items when calling the suppliers only
	public List<Item> getItems() {
		return items;
	}

	public void setItems(List<Item> items) {
		items.forEach(item->item.setSupplier(this));
		this.items = items;
	}

	public long getId() {
		return id;
	}

}