內加入遊戲框架ebean

Question

我有我想在我的產品型號寫

select * from shop inner join product on product.shops_id=shop.id where product.name=keyword 

Shop.java

public class Shop extends Model { 

    @Id 
    @SequenceGenerator(name="shop_gen", sequenceName="shop_id_seq", allocationSize=1) 
    @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="shop_gen") 
    @Column(name="id") 
    public Long id; 

    @Required 
    public String name; 

    @Required 
    public String addressLine1; 

    public String addressLine2; 

    public String addressLine3; 

    @Required 
    public String city; 

    @Required 
    public String town; 

    @Required 
    public String phoneNumber; 

    @OneToMany(mappedBy = "shops",cascade = CascadeType.REMOVE) 
    public List<Product> products=new ArrayList<>(); 


    @Required 
    @OneToOne 
    public String category; 

    @Lob 
    @Column(name = "shop_pic") 
    public byte[] shop_pic; 


    @ManyToOne 
    @Required 
    public User owner; 

} 

Product.java

public class Product extends Model { 
    @Id 
    @SequenceGenerator(name="product_gen", sequenceName="product_id_seq", allocationSize=1) 
    @GeneratedValue(strategy=GenerationType.SEQUENCE, generator="product_gen") 
    @Column(name="id") 
    public Long id; 
    @Required 
    public String name; 
    @Required 
    public Float price; 
    @OneToOne 
    @Required 
    public String category; 
    @ManyToOne 
    public Shop shops; 
} 

查詢

我的主要目標是找到商店清單h有一個特定的產品。

其中關鍵字每次更改。 我已經提到類似的問題，但dint瞭解他們中的任何一個。 任何幫助，將不勝感激

Answer 1

隨着你的模型正確的關係，這將是：

Shop.find.where().like("product.name", keyword).findList(); 

反正我們不知道也不關心你的模型。

Answer 2

這是解決問題的方法：

起初到產品類

public static Finder<Long,Product> find = new Finder<Long,Product>(
    Long.class, Product.class 
); 

更改屬性shops在產品類添加發現者shop。當存在單個對象時，給出複數名稱是不恰當的。

然後檢索包含給定名稱的產品類似的代碼添加到該商店名單：

List<Product> productList = Product.find.where().like("name", keyword).findList(); 
List<Shop> shopList = new ArrayList<Shop>(); 
for(Product product:productList) 
    shopList.add(product.shop);