java - Discriminator , WrongClassException JPA with Hibernate backend -

i have requirement have abstract superclass.

i have 6 subclasses abstract superclass.

i mapped them single_table inheritance strategy in jpa.

in pojo have 1 many relationship these 1+6 classes.

@onetomany(mappedby = "msearchpreference", cascade = cascadetype.all) private set<searchcriteria> msearchcriteria; 

here "searchcriteria" abstract class.

@entity @table(name = "srch_crtr_t", schema = "lpew") @inheritance(strategy=inheritancetype.single_table) @discriminatorcolumn(name = "srch_discriminator_cde", discriminatortype = discriminatortype.string) @org.hibernate.annotations.forcediscriminator public abstract class searchcriteria extends basedbobject implements comparable<searchcriteria> 

and has 6 concrete subclasses classes

@entity @discriminatorvalue("date") @inheritance(strategy=inheritancetype.single_table) public class searchcriteriadaterange extends searchcriteria 

i can insert values table, when retrieving error:

caused by: org.hibernate.wrongclassexception: object id: 261 not of specified subclass: com.lmig.lit.lpew.model.criteria.searchcriteria (discriminator: date  )     @ org.hibernate.loader.loader.getinstanceclass(loader.java:1453)     @ org.hibernate.loader.loader.instancenotyetloaded(loader.java:1284)     @ org.hibernate.loader.loader.getrow(loader.java:1206)     @ org.hibernate.loader.loader.getrowfromresultset(loader.java:580)     @ org.hibernate.loader.l 10:57:44,786 info  [stdout] oader.doquery(loader.java:701)     @ org.hibernate.loader.loader.doqueryandinitializenonlazycollections(loader.java:236)     @ org.hibernate.loader.loader.loadcollection(loader.java:1994)     @ org.hibernate.loader.collection.batchingcollectioninitializer.initialize(batchingcollectioninitializer.java:52)     @ org.hibernate.persister.collection.abstractcollectionpersister.initialize(abstractcollectionpersister.java:565)     @ org.hibernate.event.def.defaultinitializecollectioneventlistener.oninitializecollection(defaultinitializecollectioneventlistener.java:63)     @ org.hibernate.impl.sessionimpl.initializecollection(sessionimpl.java:1716)     @ org.hibernate.collection.abstractpersistentcollection.initialize(abstractpersistentcollection.java:344)     @ org.hibernate.collection.abstractpersistentcollection.read(abstractpersistentcollection.java:86)     @ org.hibernate.collection.abstractpersistentcollection.readelementexistence(abstractpersistentcollection.java:142)     @ org.hibernate.collection.persistentset.add(persistentset.java:187)     @ com.lmig.lit.lpew.model.homescreen.homescreenpreference.addsearchcriteriabytype(homescreenpreference.java:132)     @ com.lmig.lit.lpew.model.homescreen.homescreenpreference.addsearchcriteriabytype(homescreenpreference.java:147)     @ com.lmig.lit.lpew.service.lpewuserserviceimpl.initializehomescreenpreferences(lpewuserserviceimpl.java:135)     @ com.lmig.lit.lpew.service.lpewuserserviceimpl.finduserandinitialize(lpewuserserviceimpl.java:103)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(unknown source)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source)     @ java.lang.reflect.method.invoke(unknown source)     @ org.springframework.aop.support.aoputils.invokejoinpointusingreflection(aoputils.java:307)     @ org.springframework.aop.framework.reflectivemethodinvocation.invokejoinpoint(reflectivemethodinvocation.java:182)     @ org.springframework.aop.framework.reflectivemethodinvocation.proceed(reflectivemethodinvocation.java:149)     @ org.springframework.transaction.interceptor.transactioninterceptor.invoke(transactioninterceptor.java:106)     @ org.springframework.aop.framework.reflectivemethodinvocation.proceed(reflectivemethodinvocation.java:171)     @ org.springframework.aop.framework.jdkdynamicaopproxy.invoke(jdkdynamicaopproxy.java:204)     @ $proxy122.finduserandinitialize(unknown source)     @ com.lmig.lit.lpew.jsf.beans.usersession.getlpewuser(usersession.java:989)     @ com.lmig.lit.lpew.jsf.beans.requestforservicebean.getallrequests(requestforservicebean.java:263)     @ com.lmig.lit.lpew.jsf.beans.requestforservicebean.getallnewrequests(requestforservicebean.java:382)     @ sun.reflect.nativemethodaccessorimpl.invoke0(native method)     @ sun.reflect.nativemethodaccessorimpl.invoke(unknown source)     @ sun.reflect.delegatingmethodaccessorimpl.invoke(unknown source)     @ java.lang.reflect.method.invoke(unknown source)     @ javax.el.beanelresolver.getvalue(beanelresolver.java:62)     @ javax.el.compositeelresolver.getvalue(compositeelresolver.java:53)     @ com.sun.faces.el.facescompositeelresolver.getvalue(facescompositeelresolver.java:64)     @ org.apache.el.parser.astvalue.getvalue(astvalue.java:97)     @ org.apache.el.valueexpressionimpl.getvalue(valueexpressionimpl.java:186) 

does know solution?

you should use @org.hibernate.annotations.discriminatoroptions(force=true) on root entity