Question

我有这堂课：

@Entity
@Table(name = "TOPUP_MESSAGE")
public class ReportFee {
  //... ID & Other Properties
  @ManyToOne
  @JoinColumn(name="CONTRACT_ID")
  private ContractDetail contractDetail;
  //GETTERS AND SETTERS
}

和ContractDetail类是这样的：

@Entity
@Table(name = "CONTRACT_DETAIL")
public class ContractDetail {

  //... ID & Other Properties
  @ManyToOne
  @JoinColumn(name = "CONTRACT_ID")
  private Contract contract;
  //GETTERS AND SETTERS
}

我的合同类是这样的：

@Entity
@Table(name = "CONTRACT")
public class Contract implements {

  //... ID & Other Properties
  @ManyToOne
  @JoinColumn(name = "OPERATOR_ID")
  private Operator operator;
  //GETTERS AND SETTERS
}

我定义了这样的别名，但这是错误的：

Session session = (Session)this.em.getDelegate();
Criteria crit = session.createCriteria(getEntityClass());
crit = crit.createAlias("contractDetail", "cd", JoinType.LEFT_OUTER_JOIN);
crit = crit.createAlias("contract", "c", JoinType.LEFT_OUTER_JOIN);
crit = crit.createAlias("operator", "op", JoinType.LEFT_OUTER_JOIN);

Criterion c= Restrictions.eq("cd.cd.op", operator);

crit.add(c);

List result = crit.list();

但不幸的是我收到了这个错误：

org.hibernate.QueryException：无法解析属性：契约：x.be.ReportFee 在org.hibernate.persister.entity.AbstractPropertyMapping.propertyException（AbstractPropertyMapping.java:83）在org.hibernate.persister.entity.AbstractPropertyMapping.toType（AbstractPropertyMapping.java:77） at org.hibernate.persister.entity.AbstractEntityPersister.toType（AbstractEntityPersister.java:1809） at org.hibernate.loader.criteria.EntityCriteriaInfoProvider.getType（EntityCriteriaInfoProvider.java:57）在org.hibernate.loader.criteria.CriteriaQueryTranslator.getPathInfo（CriteriaQueryTranslator.java:251）在org.hibernate.loader.criteria.CriteriaQueryTranslator.createCriteriaEntityNameMap（CriteriaQueryTranslator.java:230）在org.hibernate.loader.criteria.CriteriaQueryTranslator。（CriteriaQueryTranslator.java:112）在org.hibernate.loader.criteria.CriteriaLoader。（CriteriaLoader.java:84）在org.hibernate.internal.SessionImpl.list（SessionImpl.java:1464）在org.hibernate.internal.CriteriaImpl.list（CriteriaImpl.java:374） at x.findByCriteria（GenericJpaDao.java:195） at x.ReportFeeSb.getAllValidReportFees（ReportFeeSb.java:54） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:39） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:25）在java.lang.reflect.Method.invoke（Method.java:597）在com.bea.core.repackaged.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection（AopUtils.java:310）在com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint（ReflectiveMethodInvocation.java:182）在com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:149） at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed（DelegatingIntroductionInterceptor.java:131）在com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke（DelegatingIntroductionInterceptor.java:119）在com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:171）在com.bea.core.repackaged.springframework.jee.spi.MethodInvocationVisitorImpl.visit（MethodInvocationVisitorImpl.java:37）在weblogic.ejb.container.injection.EnvironmentInterceptorCallbackImpl.callback（EnvironmentInterceptorCallbackImpl.java:54）在com.bea.core.repackaged.springframework.jee.spi.EnvironmentInterceptor.invoke（EnvironmentInterceptor.java:50）在com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:171）在com.bea.core.repackaged.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke（ExposeInvocationInterceptor.java:89）在com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:171） at com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed（DelegatingIntroductionInterceptor.java:131）在com.bea.core.repackaged.springframework.aop.support.DelegatingIntroductionInterceptor.invoke（DelegatingIntroductionInterceptor.java:119）在com.bea.core.repackaged.springframework.aop.framework.ReflectiveMethodInvocation.proceed（ReflectiveMethodInvocation.java:171）在com.bea.core.repackaged.springframework.aop.framework.JdkDynamicAopProxy.invoke（JdkDynamicAopProxy.java:204）在$ Proxy393.getAllValidReportFees（未知来源） at x.ReportFeeSi_kf36yv_ReportFeeSiImpl .__ WL_invoke（Unknown Source）在weblogic.ejb.container.internal.SessionRemoteMethodInvoker.invoke（SessionRemoteMethodInvoker.java:40） at x.ReportFeeSi_kf36yv_ReportFeeSiImpl.getAllValidReportFees（Unknown Source） at x.ReportFeeSi_kf36yv_ReportFeeSiImpl_WLSkel.invoke（Unknown Source）在weblogic.rmi.internal.ServerRequest.sendReceive（ServerRequest.java:174）在weblogic.rmi.cluster.ClusterableRemoteRef.invoke（ClusterableRemoteRef.java:345）在weblogic.rmi.cluster.ClusterableRemoteRef.invoke（ClusterableRemoteRef.java:259） at x.ReportFeeSi_kf36yv_ReportFeeSiImpl_1034_WLStub.getAllValidReportFees（Unknown Source） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:39） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:25）在java.lang.reflect.Method.invoke（Method.java:597）在weblogic.ejb.container.internal.RemoteBusinessIntfProxy.invoke（RemoteBusinessIntfProxy.java:85）在$ Proxy392.getAllValidReportFees（未知来源） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:39） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:25）在java.lang.reflect.Method.invoke（Method.java:597）在x.invoke（SlsbDynamicDelegate.java:66）在$ Proxy391.getAllValidReportFees（未知来源） at xxx.ReportFeeBean.performAction（ReportFeeBean.java:61） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:39） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:25）在java.lang.reflect.Method.invoke（Method.java:597） at com.sun.el.parser.AstValue.invoke（Unknown Source） at com.sun.el.MethodExpressionImpl.invoke（Unknown Source） at com.sun.faces.facelets.el.TagMethodExpression.invoke（TagMethodExpression.java:105） at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke（MethodBindingMethodExpressionAdapter.java:88） at com.sun.faces.application.ActionListenerImpl.processAction（ActionListenerImpl.java:102）在javax.faces.component.UICommand.broadcast（UICommand.java:315）在javax.faces.component.UIViewRoot.broadcastEvents（UIViewRoot.java:794）在javax.faces.component.UIViewRoot.processApplication（UIViewRoot.java:1259） at com.sun.faces.lifecycle.InvokeApplicationPhase.execute（InvokeApplicationPhase.java:81）在com.sun.faces.lifecycle.Phase.doPhase（Phase.java:101）在com.sun.faces.lifecycle.LifecycleImpl.execute（LifecycleImpl.java:118）在javax.faces.webapp.FacesServlet.service（FacesServlet.java:593）在weblogic.servlet.internal.StubSecurityHelper $ ServletServiceAction.run（StubSecurityHelper.java:227）在weblogic.servlet.internal.StubSecurityHelper.invokeServlet（StubSecurityHelper.java:125）在weblogic.servlet.internal.ServletStubImpl.execute（ServletStubImpl.java:300）在weblogic.servlet.internal.TailFilter.doFilter（TailFilter.java:26）在weblogic.servlet.internal.FilterChainImpl.doFilter（FilterChainImpl.java:56）在weblogic.servlet.internal.RequestEventsFilter.doFilter（RequestEventsFilter.java:27）在weblogic.servlet.internal.FilterChainImpl.doFilter（FilterChainImpl.java:56） at weblogic.servlet.internal.WebAppServletContext $ ServletInvocationAction.wrapRun（WebAppServletContext.java:3715） at weblogic.servlet.internal.WebAppServletContext $ ServletInvocationAction.run（WebAppServletContext.java:3681）在weblogic.security.acl.internal.AuthenticatedSubject.doAs（AuthenticatedSubject.java:321）在weblogic.security.service.SecurityManager.runAs（SecurityManager.java:120）在weblogic.servlet.internal.WebAppServletContext.securedExecute（WebAppServletContext.java:2277）在weblogic.servlet.internal.WebAppServletContext.execute（WebAppServletContext.java:2183）在weblogic.servlet.internal.ServletRequestImpl.run（ServletRequestImpl.java:1454）在weblogic.work.ExecuteThread.execute（ExecuteThread.java:207）在weblogic.work.ExecuteThread.run（ExecuteThread.java:176）

这里是如何创建类的：

----ReportFee (private ContractDetail contractDetail)

       |

        ------ ContractDetail (private Contract contract)

                      |

                       -------- Contract (private Contract contract)

我将如何解决这个问题，提前完成????

Answer 1

我在定义嵌套层次结构时解决了这个问题：

Session session = (Session)this.em.getDelegate();
Criteria crit = session.createCriteria(getEntityClass());
crit = crit.createAlias("contractDetail", "cd", JoinType.LEFT_OUTER_JOIN);
crit = crit.createAlias("cd.contract", "c", JoinType.LEFT_OUTER_JOIN);

Criterion criterion= Restrictions.eq("c.operator", operator);

crit.add(c);

List result = crit.list();

Hibernate嵌套属性别名

1 个答案: