HibernateSystemException：不明なエンティティ：org.hibernate.collection.PersistentSet;

Question

私の目標は、すべての推奨事項を削除してから新しいものを挿入することです。 （いずれかのオンラインの例では、大きな助けになるよう

HBMマッピングは次のとおりです。として

 ProductDBVO dbvo =((ProductImpl)product).getProductDBVO(); 
    Set<ProductRecommendationDBVO> recommendations= dbvo.getRecommendations(); 
    dbvo.getRecommendations().remove(recommendations); 
     getHibernateTemplate().saveOrUpdate(recommendations); 
getSession().flush(); 
     getSession().refresh(((ProductImpl)product).getProductDBVO()); 

そして、取得中にエラー：

私は勧告を削除するには、次のコードを使用して、mは

<set name="recommendations" table="PRD_PRODUCT_RECOMMENDATION" 
inverse="true" lazy="true" batch-size="25" fetch="select" cascade="save-update, delete"> 
<cache usage="nonstrict-read-write"/> 
    <key column="productguid" not-null="true"/> 
    <one-to-many class="com.quinstreet.persistence.productCatalogue.ProductRecommendationDBVO" /> 
</set> 

org.springframework.orm.hibernate3.HibernateSystemException: Unknown entity: org.hibernate.collection.PersistentSet; nested exception is org.hibernate.MappingException: Unknown entity: org.hibernate.collection.PersistentSet 
at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:659) 
at org.springframework.orm.hibernate3.HibernateAccessor.convertHibernateAccessException(HibernateAccessor.java:412) 
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:378) 
at org.springframework.orm.hibernate3.HibernateTemplate.delete(HibernateTemplate.java:791) 
at org.springframework.orm.hibernate3.HibernateTemplate.delete(HibernateTemplate.java:787) 
at com.quinstreet.persistence.product.ProductDAOHibImpl.deleteRecommendations(ProductDAOHibImpl.java:2564) 
at com.quinstreet.service.product.ProductServiceImpl.updateCatalogue(ProductServiceImpl.java:1827) 
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:597) 
at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:301) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149) 
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106) 
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171) 
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204) 
at $Proxy36.updateCatalogue(Unknown Source) 
at com.quinstreet.app.admin.productCatalogue.struts.actions.viewprep.UpdateProductAttributesAction.executeModelUpdate(UpdateProductAttributesAction.java:38) 
at com.quinstreet.app.admin.ProductAdminModelUpdateAction.executeAction(ProductAdminModelUpdateAction.java:43) 
at com.quinstreet.app.framework.actions.CoreStrutsConstrainedAction.executeAction(CoreStrutsConstrainedAction.java:135) 
at com.quinstreet.app.framework.actions.CoreStrutsAction.execute(CoreStrutsAction.java:120) 
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484) 
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274) 
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482) 
at com.quinstreet.app.framework.CoreStrutsActionServlet.process(CoreStrutsActionServlet.java:108) 
at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:507) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:690) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:198) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:292) 
at com.quinstreet.app.framework.filters.RedirectAfterPostFilter.doFilterInternal(RedirectAfterPostFilter.java:106) 
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:75) 
at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303) 
at net.sf.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:84) 
at net.sf.acegisecurity.intercept.web.SecurityEnforcementFilter.doFilter(SecurityEnforcementFilter.java:182) 
at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303) 
at net.sf.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:153) 
at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303) 
at com.quinstreet.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:354) 
at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303) 
at net.sf.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:225) 
at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303) 
at net.sf.acegisecurity.securechannel.ChannelProcessingFilter.doFilter(ChannelProcessingFilter.java:168) 
at net.sf.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:303) 
at net.sf.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:173) 
at net.sf.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:125) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:263) 
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844) 
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:584) 
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) 
at java.lang.Thread.run(Thread.java:662) 
Caused by: org.hibernate.MappingException: Unknown entity: org.hibernate.collection.PersistentSet 
at org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:580) 
at org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1365) 
at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:100) 
at org.hibernate.event.def.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:74) 
at org.hibernate.impl.SessionImpl.fireDelete(SessionImpl.java:793) 
at org.hibernate.impl.SessionImpl.delete(SessionImpl.java:771) 
at org.springframework.orm.hibernate3.HibernateTemplate$25.doInHibernate(HibernateTemplate.java:797) 
at org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:373) 

アドバイスをお願いいたします

ありがとう

Answer 1

saveOrUpdate()はエンティティをパラメータとして取ります。しかし、私はエンティティであると仮定するオブジェクトのセットを渡している）。

セッションに添付されているものを保存または更新する必要はありません。 saveOrUpdateは、新しいエンティティを永続化するか、既存のデタッチされたエンティティを更新するために使用されます。

はただのコレクションからそれらを削除し、コレクションのすべての要素を削除すると、Hibernateは自動的にそれが永続的なものになります。

product.getRecommendations().clear(); 

はあなたが必要とするすべてです。