最近用JPA遇到这样一个问题:Repeated column in mapping for entity: com.ketayao.security.entity.main.User column: org_id (should be mapped with insert="false" update="false") 这个错误是由实体类引起的,我一开始是这样写的: @Column private long orgId; @ManyToOne @JoinColumn…
近期用JPA遇到这样一个问题:Repeated column in mapping for entity: com.ketayao.security.entity.main.User column: org_id (should be mapped with insert="false" update="false") 这个错误是由实体类引起的.我一開始是这样写的: @Column private long orgId; @ManyToOne @JoinColumn…
转:http://lijiejava.iteye.com/blog/786535 一对多双向关联(类Item与类Bid): Item类: public class Item { private int id; private String name; private Set bids = new HashSet(); ••• } Bid类: public class Bid { private int id; private double amount; private Item item; •…
在学习EF code First的小案例的时候,遇见了这个异常 <configSections> <!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 --> <section name="entityFramework" type="System.Data.Entity.In…
The extension methods I have created one extension method for DbContext and other for ObjectContext: public static class ContextExtensions { public static string GetTableName<T>(this DbContext context) where T : class { ObjectContext objectContext =…
