Another Repeated column in mapping for entity error

Question

Despite all of the others post  I can t find a solution for this error with GlassFish  on MacOSX  NetBeans 7 2   Here the error   SEVERE  Exception while invoking class org glassfish persistence jpa JPADeployer prepare method SEVERE  Exception while preparing the app SEVERE   PersistenceUnit  supmarket  Unable to build EntityManagerFactory       Caused by  org hibernate MappingException  Repeated column in mapping for entity  com supmarket entity Sale column  customerId  should be mapped with insert  false  update  false     Here the code    Sale java   Entity public class Sale         Id      GeneratedValue strategy   GenerationType AUTO      private Long id        Column nullable false      private Long idFromAgency       private float amountSold       private String agency        Temporal javax persistence TemporalType DATE      private Date createdate        Column nullable false      private Long productId        Column nullable false      private Long customerId        ManyToOne optional false       JoinColumn name  productId  referencedColumnName  id product       private Product product        ManyToOne optional false       JoinColumn name  customerId  referencedColumnName  id customer       private Customer customer        public void Sale             public void Sale Long idFromAgency  float amountSold  String agency               Date createDate  Long productId  Long customerId                                     then getters setters     Customer java   Entity public class Customer         Id      GeneratedValue strategy   GenerationType AUTO       Column name  id customer       private Long id customer        Column nullable false      private Long idFromAgency       private String  gender                      maritalState                      firstname                      lastname                      incomeLevel        OneToMany mappedBy  customer  targetEntity Sale class  fetch FetchType EAGER      private Collection sales        public void Customer          public void Customer Long idFromAgency  String gender  String maritalState              String firstname  String lastname  String incomeLevel                           Product java  public class Product         Id      GeneratedValue strategy   GenerationType AUTO       Column name  id product       private Long id product        Column nullable false      private Long idFromAgency       private String name        OneToMany mappedBy  product  targetEntity Sale class  fetch FetchType EAGER      private Collection sales         constructors   getters  setters

User · Answer

Take care to provide only 1 setter and getter for any attribute  The best way to approach is to write down the definition of all the attributes then use eclipse generate setter and getter utility rather than doing it manually  The option comes on right click-  source -  Generate Getter and Setter

User · Answer

Hope this will help    OneToOne optional   false       JoinColumn name    department id   insertable   false  updatable   false       JsonManagedReference     private Department department    JsonIgnore     public Department getDepartment             return department          OneToOne mappedBy    department   private Designation designation    JsonIgnore     public Designation getDesignation             return designation

User · Answer

use this  is work for me    Column name    candidate id   nullable false  private Long candidate id   ManyToOne optional false   JoinColumn name    candidate id   insertable false  updatable false  private Candidate candidate

User · Answer

If you are stuck with a legacy database where someone already placed JPA annotations on but did NOT define the relationships and you are now trying to define them for use in your code  then you might NOT be able to delete the customerId  Column since other code may directly reference it already   In that case  define the relationships as follows   ManyToOne optional false   JoinColumn name  quot productId quot  referencedColumnName  quot id product quot   insertable false  updatable false  private Product product    ManyToOne optional false   JoinColumn name  quot customerId quot  referencedColumnName  quot id customer quot   insertable false  updatable false  private Customer customer   This allows you to access the relationships   However  to add update to the relationships you will have to manipulate the foreign keys directly via their defined  Column values   It s not an ideal situation  but if you are handed this sort of situation  at least you can define the relationships so that you can use JPQL successfully

User · Answer

We have resolved the circular dependency Parent-child Entities  by mapping the child entity instead of parent entity in Grails 4 GORM    Example   Class Person       String name    Class Employee extends Person      String empId      Before my code  Class Address       static belongsTo    person  Person       We changed our Address class to  Class Address       static belongsTo    person  Employee

User · Answer

Id  Column name    COLUMN NAME   nullable   false  public Long getId         return id      OneToMany cascade   CascadeType ALL  fetch   FetchType LAZY  targetEntity   SomeCustomEntity class   JoinColumn name    COLUMN NAME   referencedColumnName    COLUMN NAME   nullable   false  updatable   false  insertable   false   org hibernate annotations Cascade value   org hibernate annotations CascadeType ALL  public List lt SomeCustomEntity gt  getAbschreibareAustattungen         return abschreibareAustattungen      If you have already mapped a column and have accidentaly set the same values for name and referencedColumnName in  JoinColumn hibernate gives the same stupid error  Error   Caused by  org hibernate MappingException  Repeated column in mapping for entity  com testtest SomeCustomEntity column  COLUMN NAME  should be mapped with insert  false  update  false

User · Answer

The message is clear  you have a repeated column in the mapping  That means you mapped the same database column twice  And indeed  you have    Column nullable false  private Long customerId    and also    ManyToOne optional false   JoinColumn name  customerId  referencedColumnName  id customer   private Customer customer     and the same goes for productId product    You shouldn t reference other entities by their ID  but by a direct reference to the entity  Remove the customerId field  it s useless  And do the same for productId  If you want the customer ID of a sale  you just need to do this    sale getCustomer   getId

User · Answer

This means you are mapping a column twice in your entity class   Explaining with an example          Column name    column1       private String object1        ManyToOne fetch   FetchType EAGER       JoinColumn name    column1   referencedColumnName    column1       private TableClass object2       The problem in the above code snippet is we are repeating mapping      Solution  Since mapping is an important part  you don t want to remove that  Instead  you will remove        Column name    column1       private String uniqueId       You can still pass the value of object1 by creating a object of TableClass and assign the String value of Object1 in it    This works 100   I have tested this with Postgres and Oracle database

[hibernate] Another Repeated column in mapping for entity error

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