JPA 關聯表添加關聯條件@Where、@WhereJoinTable()

JPA 關聯表添加關聯條件，當我其中一個表的數據狀態發送改變，不是業務上所需要的，這時實體查詢還是會帶出關聯數據，所以我們需要處理這部分數據；第一種方式：刪除中間表對應數據；第二種添加關聯條件，按條件帶出有效數據

• 代碼示例
  • 用戶實體

   @Entity
   @Table(name = "pmi_t_user")
   @org.hibernate.annotations.Table(appliesTo = "pmi_t_user",comment="用戶信息表")
   @Component
   @ApiModel(value = "用戶實體")
   public class User implements Serializable {
   
       private static final long serialVersionUID = -4618191047832700121L;
       /**
        * 主鍵id
        */
       @ApiModelProperty(value = "主鍵id")
       @Id
       @GeneratedValue(strategy = GenerationType.IDENTITY)
       private Long id;
   
   
       /**
        * 用戶名
        */
       @ApiModelProperty(value = "用戶名", required = true)
       @NotBlank(message = "用戶名不能爲空")
       @Column(name = "user_name", nullable = false,columnDefinition="varchar(100) COMMENT '用戶名'")
       private String userName;
   
   
       /**
        * 關聯角色 db_status 是數據庫角色表字段
        * @WhereJoinTable(clause = "db_status = 1")
        */
       @ApiModelProperty(value = "關聯角色")
       @ManyToMany(fetch = FetchType.EAGER,targetEntity = Role.class)
       @JsonIgnoreProperties(value = { "users" })
       @Where(clause = "db_status = 1")
       @JoinTable(name = "pmi_t_user_role", joinColumns = @JoinColumn(name = "user_id"), inverseJoinColumns = @JoinColumn(name = "role_id"))
       @org.hibernate.annotations.ForeignKey(name = "none")
       private Set<Role> roles;
   }
  

  • 角色

   @Entity
   @Table(name = "pmi_t_role")
   @org.hibernate.annotations.Table(appliesTo = "pmi_t_role",comment="角色")
   @ApiModel(value = "角色")
   public class Role implements Serializable {
   
       private static final long serialVersionUID = 2376963713493278377L;
       /**
        * 主鍵id
        */
       @ApiModelProperty(value = "主鍵id")
       @Id
       @GeneratedValue(strategy = GenerationType.IDENTITY)
       private Long id;
   
       /**
        * 角色名稱
        */
       @ApiModelProperty(value = "角色名稱")
       @NotNull(message = "角色名稱不能爲空")
       @Length(max = 20,min=1, message = "角色名稱長度大於1小於20")
       @Column(name = "role_name", nullable = false,columnDefinition="varchar(20) COMMENT '角色名稱'")
       private String roleName;
   
   
       /**
        * 數據狀態 1:正常  -1：刪除
        */
       @ApiModelProperty(value = "數據狀態")
       @Column(name = "db_status", nullable = false,columnDefinition="tinyint(4) DEFAULT '1' COMMENT '數據狀態 1:正常  -1：刪除'")
       private int dbStatus;
   
   }
  

• 查詢效果：
  
  
  
• sql打印