@Entity
@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class Category implements TanEntity, Imageable
{
...
    @Id
    private String id;
   
    @Version
    private Long version = null;
....
....
    @CollectionOfElements
    @OneToMany(cascade = CascadeType.ALL)
    @MapKey(name = "name")
    @JoinColumn
    @Cascade(org.hibernate.annotations.CascadeType.DELETE_ORPHAN)
    private Map<String, CategoryAttribute> attributeValues = new HashMap<String, CategoryAttribute>();
....
....
}

@Entity
@Cache(usage=CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)
public class CategoryAttribute implements TanEntity
{
  @Id
  @GeneratedValue(generator = "system-uuid")
  @GenericGenerator(name = "system-uuid", strategy = "uuid")
  private String id;
 
  @Version
  private Long version;
 
  private String name;

  @CollectionOfElements
  @org.hibernate.annotations.MapKey(columns={@Column(name="productCount")})
  @Column(name="productCount", nullable=false, columnDefinition="INTEGER UNSIGNED")
  private Map<String, Integer> values = new HashMap<String, Integer>();
 
   ....
   ....
}

....
....
  <mapping class="com.ac.tan.core.beans.CategoryAttribute"/>
  <mapping class="com.ac.tan.core.beans.Category"/>
....

1534 ERROR org.apache.catalina.core.ContainerBase.[Catalina].[localhost].[/t] listenerStart [3696] - Exception sending context initialized event to listener instance of class com.ac.tan.web.TanContextListener
org.hibernate.AnnotationException: Use of @OneToMany or @ManyToMany targeting an unmapped class: com.ac.tan.core.beans.Category.attributeValues[com.ac.tan.core.beans.CategoryAttribute]
        at org.hibernate.cfg.annotations.CollectionBinder.bindManyToManySecondPass(CollectionBinder.java:1016)
        at org.hibernate.cfg.annotations.CollectionBinder.bindStarToManySecondPass(CollectionBinder.java:567)
        at org.hibernate.cfg.annotations.MapBinder$1.secondPass(MapBinder.java:80)
        at org.hibernate.cfg.CollectionSecondPass.doSecondPass(CollectionSecondPass.java:43)
        at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1127)
        at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:296)
        at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1283)
        at com.ac.tan.core.TanContext.configHibernate(TanContext.java:403)
        at com.ac.tan.core.TanContext.startup(TanContext.java:209)
        at com.ac.tan.web.TanWebApplication.startup(TanWebApplication.java:134)
        at com.ac.tan.web.TanContextListener.contextInitialized(TanContextListener.java:23)
        at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:3692)
        at org.apache.catalina.core.StandardContext.start(StandardContext.java:4127)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:759)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:739)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:524)
        at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:910)
        at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:873)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:474)
        at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1118)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:310)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1020)
        at org.apache.catalina.core.StandardHost.start(StandardHost.java:718)
        at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1012)
        at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:442)
        at org.apache.catalina.core.StandardService.start(StandardService.java:450)
        at org.apache.catalina.core.StandardServer.start(StandardServer.java:680)
        at org.apache.catalina.startup.Catalina.start(Catalina.java:536)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:275)
        at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)