Hibernate Criteria無法檢索嵌套對象的集合

我有一個TeamPlayer對象，其對象的屬性爲Player。 Player對象與PlayerSuspension有關聯One-to-Many。Hibernate Criteria無法檢索嵌套對象的集合

當我嘗試檢索所有TeamPlayers並獲取所有播放器的暫停時。它引發以下錯誤。你能幫我解決問題嗎？

org.hibernate.QueryException: could not resolve property: ps of: we.data.weref.model.TeamPlayer 
    at org.hibernate.persister.entity.AbstractPropertyMapping.propertyException(AbstractPropertyMapping.java:62) 
    at org.hibernate.persister.entity.AbstractPropertyMapping.toType(AbstractPropertyMapping.java:56) 
    at org.hibernate.persister.entity.AbstractEntityPersister.getSubclassPropertyTableNumber(AbstractEntityPersister.java:1770) 
    at org.hibernate.persister.entity.BasicEntityPropertyMapping.toColumns(BasicEntityPropertyMapping.java:46) 
    at org.hibernate.persister.entity.AbstractEntityPersister.toColumns(AbstractEntityPersister.java:1745) 
    at org.hibernate.loader.criteria.CriteriaQueryTranslator.getColumns(CriteriaQueryTranslator.java:510) 
    at org.hibernate.loader.criteria.CriteriaQueryTranslator.findColumns(CriteriaQueryTranslator.java:525) 
    at org.hibernate.criterion.NullExpression.toSqlString(NullExpression.java:36) 
    at org.hibernate.criterion.LogicalExpression.toSqlString(LogicalExpression.java:42) 
    at org.hibernate.criterion.LogicalExpression.toSqlString(LogicalExpression.java:42) 
    at org.hibernate.loader.criteria.CriteriaQueryTranslator.getWhereCondition(CriteriaQueryTranslator.java:400) 
    at org.hibernate.loader.criteria.CriteriaJoinWalker.<init>(CriteriaJoinWalker.java:106) 
    at org.hibernate.loader.criteria.CriteriaJoinWalker.<init>(CriteriaJoinWalker.java:75) 
    at org.hibernate.loader.criteria.CriteriaLoader.<init>(CriteriaLoader.java:80) 
    at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1760) 
    at org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:363) 
    at we.data.weref.dao.hbn.TeamDaoHbn.getTeamPlayers(TeamDaoHbn.java:109) 
    at we.data.weref.service.impl.TeamServiceImpl.getTeamPlayers(TeamServiceImpl.java:87) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:302) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:190) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) 
    at org.springframework.security.access.intercept.aopalliance.MethodSecurityInterceptor.invoke(MethodSecurityInterceptor.java:68) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
    at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) 
    at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281) 
    at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) 
    at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) 
    at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208) 
    at com.sun.proxy.$Proxy169.getTeamPlayers(Unknown Source) 
    at we.data.weref.controller.api.TeamControllerApi.getTeamPlayers(TeamControllerApi.java:71) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:222) 
    at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:137) 
    at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:814) 
    at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:737) 
    at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:959) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:969) 
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:860) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:845) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:51) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:316) 
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) 
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:114) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:169) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
    at org.springframework.security.web.authentication.www.DigestAuthenticationFilter.doFilter(DigestAuthenticationFilter.java:233) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
    at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:64) 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:53) 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:91) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:213) 
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:176) 
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346) 
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:262) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1041) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:603) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source)

我的休眠標準是如下

return getSession() 
      .createCriteria(TeamPlayer.class, "tp") 
      .createAlias("player.playerSuspensions", "ps", JoinType.LEFT_OUTER_JOIN) 
      .add(Restrictions.and(
       Restrictions.or(
        Restrictions.isNull("ps"), 
        Restrictions.eq("ps.team.id", teamId) 
       ), 
       Restrictions.eq("tp.team.id", teamId) 
      ) 
     ) 
     .list(); 


     @Entity 
     public class TeamPlayer { 

      @Id 
      @GeneratedValue(strategy = GenerationType.IDENTITY) 
      private Integer id; 

      @ManyToOne 
      @JsonSerialize(using = IdSerializer.class) 
      private Team team; 

      @ManyToOne 
      @JsonSerialize(using = IdFirstNameLastNameSerializer.class) 
      private Player player; 

      public Integer getId() { 
       return id; 
      } 
      public void setId(Integer id) { 
       this.id = id; 
      } 
      public Player getPlayer() { 
       return player; 
      } 
      public void setPlayer(Player player) { 
       this.player = player; 
      } 
       public Team getTeam() { 
       return team; 
      } 
      public void setTeam(Team team) { 
       this.team = team; 
      } 
     } 

    @Entity 
    public class Player implements Serializable { 
     private static final long serialVersionUID = 5688361063269574977L; 

     @Id 
     @GeneratedValue(strategy=GenerationType.IDENTITY) 
     private Integer id; 


     @OneToMany(mappedBy = "player") 
     private List<PlayerSuspension> playerSuspensions; 

     public Integer getId() { 
      return id; 
     } 
     public void setId(Integer id) { 
      this.id = id; 
     } 
     } 

@Entity 

public class PlayerSuspension implements Serializable { 
    private static final long serialVersionUID = 1L; 

    @Id 
    @GeneratedValue(strategy=GenerationType.IDENTITY) 
    private Integer id; 

    @ManyToOne 
    private Player player; 

    @ManyToOne 
    private Team team; 

    @ManyToOne       // if competition == null then player is suspended from all the competitions 
    private Competition competition; // if competition given then only from that particular competition 

    private Date startDate; 
    private Integer games; 
    private Integer weeks; 
    private Integer gamesSpent; 

    public Integer getId() { 
     return id; 
    } 
    public void setId(Integer id) { 
     this.id = id; 
    } 
    public Player getPlayer() { 
     return player; 
    } 
    public void setPlayer(Player player) { 
     this.player = player; 
    } 
    public Team getTeam() { 
     return team; 
    } 
    public void setTeam(Team team) { 
     this.team = team; 
    } 
}

來源

2016-03-04 Alam Hussain

ps是別名。您應該指定一個屬性名稱PlayerSuspension。例如ps.name。

你可以使用這樣的東西（你可以將它轉換爲標準）。也許，它可以更簡單地

from TeamPlayer teamPlayer 
    left join teamPlayer.player player 
    left join player.playerSuspensions suspension 
where suspension.team.id = :teamId 
    or not exists (select innerTeamPlayer.id from TeamPlayer innerTeamPlayer 
      inner join innerTeamPlayer.player innerPlayer 
      inner join innerPlayer.playerSuspensions 
      where innerTeamPlayer.id = teamPlayer.id)

更新

不能使用TeamPlayer.getPlayerSuspension()這個HQL的結果。因爲默認情況下收藏是懶惰的。您可以嘗試通過HQL與left join fetch

from TeamPlayer teamPlayer 
    left join teamPlayer.player player 
    left join fetch player.playerSuspensions suspension 
where suspension.team.id = :teamId 
    or not exists (select innerTeamPlayer.id from TeamPlayer innerTeamPlayer 
      inner join innerTeamPlayer.player innerPlayer 
      inner join innerPlayer.playerSuspensions 
      where innerTeamPlayer.id = teamPlayer.id)

獲取playerSuspensions，或者你可以改變一個映射

@OneToMany(fetch = FetchType.EAGER, mappedBy = "player") 
private List<PlayerSuspension> playerSuspensions;

來源

2016-03-04 09:42:25

其實我想檢索所有TeamPlayers其中Player對象（內TeamPlayer）具有空/空懸浮液也。但是在內連接的情況下，hibernate不會在Player對象獲得null/empty Suspensions的情況下檢索到TeamPlayers。 –

@AlamHussain請將您的持久性類添加到問題中，並詳細描述您想要檢索的內容。 –

@AlamHussain我更新了我的答案 –

Hibernate Criteria無法檢索嵌套對象的集合

回答

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