Uses a non-entity as target entity

Question

Hi everyone,
I need your help because I am working on a project j2ee6
I am using jpa (eclipseLink)
when I created entities without relation, all worked perfectly
but now that I am trying to set up relation @oneTomany @ManyToOne
I got this error all the time
Exception Description: [class com.Domain.User] uses
[ERROR] a non-entity [class com.Domain.Groups] as target entity in the
[ERROR] relationship attribute [field groupe].
here is my user entity :_
@Entity
@NamedQueries({
     @NamedQuery(name = "findAllUsers", query="select u from User u"),
     @NamedQuery(name = "findWithLogParam", query="select u from User u where u.Email = :fmail and u.Password = FUNC('sha1', :fpass)")
public class User implements Serializable{
     private static final long serialVersionUID = 3175161374832714727L;
     @Id @GeneratedValue(strategy=GenerationType.IDENTITY)
     private Long UserId;
     @Column(nullable = false)
     private String Title = "Mr";
     @Column(nullable = false)
     private String Login;
     @Column(nullable = false)
     private String Password;
     @Column(nullable = false)
     private String Firstname;
     @Column(nullable = false)
     private String Lastname;
     @Column(nullable = false)
     private String Email;
     private String Telephone;
     private String Mobile;
     @Temporal(TemporalType.DATE)
     private Date Date_of_birth;
     private String Postcode;
     private String Address;
     private String City;
     private String County;
     private String Region;
     private String Country;
     private String AccountEnabled="On";
     @ManyToOne(optional=false)
@JoinColumn(name="GROUPID", referencedColumnName="GROUPID")
     private Groups groupe;
     private String Token;
Here is the entity Groups*
@Entity
public class Groups implements Serializable{
     private static final long serialVersionUID = 7092895671981671161L;
     @Id @GeneratedValue(strategy=GenerationType.IDENTITY)
     private Long GroupId;
     @Column(nullable = false)
     private String GroupName;      
     @OneToMany(mappedBy="groupe", targetEntity=User.class, fetch=FetchType.EAGER)
     private List<User> UserList = new ArrayList<User>();
Here is my persistence.xml*
<?xml version="1.0" encoding="windows-1252" ?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence"
               xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
               xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"
               version="2.0">
     <persistence-unit name="testPU" transaction-type="JTA">
          <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>     
          <jta-data-source>jdbc/UnmodDB</jta-data-source>     
          <class>com.unmod.Domain.User</class>
          <class>com.unmod.Domain.Groups</class>
........ other classes ......
          <exclude-unlisted-classes>false</exclude-unlisted-classes>
          <properties>
               <property name="eclipselink.target-database" value="MySQL"/>
               <property name="eclipselink.ddl-generation" value="drop-and-create-tables" />
               <property name="eclipselink.ddl-generation.output-mode" value="database" />
          <property name="eclipselink.create-ddl-jdbc-file-name" value="create.sql"/>
          </properties>
     </persistence-unit>
</persistence>
It works (compliation works) when I add @Basic however only the user table is created
Thanks

Answer 1

Yes it's strange because
when I comment the oneToMany/ManyToOne parts
I see hibernate is called
Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
INFO: Unable to find org.hibernate.search.event.FullTextIndexEventListener on the classpath. Hibernate Search is not enabled.
INFO: Instantiated an instance of org.hibernate.validator.engine.resolver.JPATraversableResolver.
INFO: Initializing connection provider: org.hibernate.ejb.connection.InjectedDataSourceConnectionProvider
INFO: Using provided datasource
INFO: RDBMS: MySQL, version: 5.5.20
INFO: JDBC driver: MySQL-AB JDBC Driver, version: mysql-connector-java-5.1.18 ( Revision: [email protected] )
INFO: Using dialect: org.hibernate.dialect.MySQLDialect
INFO: Transaction strategy: org.hibernate.ejb.transaction.JoinableCMTTransactionFactory
INFO: instantiating TransactionManagerLookup: org.hibernate.transaction.SunONETransactionManagerLookup
INFO: instantiated TransactionManagerLookup
INFO: Automatic flush during beforeCompletion(): disabled
INFO: Automatic session close at end of transaction: disabled
INFO: JDBC batch size: 15
INFO: JDBC batch updates for versioned data: disabled
INFO: Scrollable result sets: enabled
but when I added the OneToMany/ManyToOne
I got
[INFO] Command deploy failed.
[ERROR] remote failure: Unknown plain text format. A properly formatted response from a PlainTextActionReporter
[ERROR] always starts with one of these 2 strings: PlainTextActionReporterSUCCESS or PlainTextActionReporterFAILURE. The response we received from the server was not understood: Signature-Version: 1.0
[ERROR] message: Error occurred during deployment: Exception while preparing t
[ERROR] he app : Exception [EclipseLink-28018] (Eclipse Persistence Services
[ERROR] - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.EntityMa
[ERROR] nagerSetupException
[ERROR] Exception Description: Predeployment of P
[ERROR] ersistenceUnit [chapter02PU] failed.
[ERROR] Internal Exception: Exce
[ERROR] ption [EclipseLink-7250] (Eclipse Persistence Services - 2.3.0.v20110
[ERROR] 604-r9504): org.eclipse.persistence.exceptions.ValidationException%%%
[ERROR] EOL%%%Exception Description: [class com.unmod.Domain.User] uses a non
[ERROR] -entity [class com.unmod.Domain.Groups] as target entity in the relat
[ERROR] ionship attribute [field groupe].. Please see server.log for more det
[ERROR] ails.
[ERROR] Exception while invoking class org.glassfish.persistenc
[ERROR] e.jpa.JPADeployer prepare method : javax.persistence.PersistenceExcep
[ERROR] tion: Exception [EclipseLink-28018] (Eclipse Persistence Services - 2
[ERROR] .3.0.v20110604-r9504): org.eclipse.persistence.exceptions.EntityManag
[ERROR] erSetupException
[ERROR] Exception Description: Predeployment of Pers
[ERROR] istenceUnit [chapter02PU] failed.
[ERROR] Internal Exception: Excepti
[ERROR] on [EclipseLink-7250] (Eclipse Persistence Services - 2.3.0.v20110604
[ERROR] -r9504): org.eclipse.persistence.exceptions.ValidationException%%%EOL
[ERROR] %%%Exception Description: [class com.unmod.Domain.User] uses a non-en
[ERROR] tity [class com.unmod.Domain.Groups] as target entity in the relation
[ERROR] ship attribute [field groupe].
[ERROR] Exception [EclipseLink-28018]
[ERROR] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.p
[ERROR] ersistence.exceptions.EntityManagerSetupException
[ERROR] Exception Descripti
[ERROR] on: Predeployment of PersistenceUnit [chapter02PU] failed.
[ERROR] Internal E
[ERROR] xception: Exception [EclipseLink-7250] (Eclipse Persistence Services
[ERROR] - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.Validati
[ERROR] onException
[ERROR] Exception Description: [class com.unmod.Domain.User] uses
[ERROR] a non-entity [class com.unmod.Domain.Groups] as target entity in the
[ERROR] relationship attribute [field groupe].
it's like eclipseLink wanted to bug me over Hibernate.