Доступ к двум объектам имеет то же значение PersistentSet, что сеанс или сеанс не закрыты?

Только что начал проект, который имеет странный дизайн базы данных от предыдущих разработчиков. И я нашел исправление для решения проблемы. Но я хочу услышать от других, почему это происходит с OpenSessionInViewFilter настроен в web.xml и работает правильно на ленивых загруженных наборах, кроме этого случая. Ниже приведена модифицированная версия реального кода для объяснения сценария.Доступ к двум объектам имеет то же значение PersistentSet, что сеанс или сеанс не закрыты?

Единственное, что я могу придумать, это то, что оба белка в примере имеют одинаковую ссылку на тот же набор, который связан с номером ncbiGI 66275854. Кто-нибудь сталкивается с подобной проблемой и знает почему?

Protein.java

@Entity 
@Table(name = "Protein") 
public class Protein implements Serializable { 
    private static final long serialVersionUID = 8578992962633035166L; 
    private static Log logger = LogFactory.getLog(Protein.class); 
    Long id; 
    String ncbiName; 
    String ncbiGI; 
    Set<WhOrtholog> whOrthologs; 

    @Id 
    @Column(name = "ProteinId") 
    public Long getId() { 
     return id; 
    } 

    public void setId(Long id) { 
     this.id = id; 
    } 

    @Column(name = "NCBIProteinGI") 
     public String getNcbiGi() { 
     return ncbiGI; 
    } 

    public void setNcbiGI(String ncbiGI) { 
     this.ncbiGI = ncbiGI; 
    } 

    @OneToMany(fetch = FetchType.LAZY, targetEntity = WhOrtholog.class) 
    @JoinColumn(name = "NCBIPROTEINGI", referencedColumnName = "NCBIPROTEINGI", updatable = false, insertable = false) 
    public Set<WhOrtholog> getWhOrthologs() { 
     return whOrthologs; 
    } 

    public void setWhOrthologs(Set<WhOrtholog> whOrthologs) { 
     this.whOrthologs = whOrthologs; 
    } 
}

WhOrtholog.java

@Entity 
@Table(name = "WH_ORTHOLOG") 
public class WhOrtholog implements java.io.Serializable { 
    private static final long serialVersionUID = 8633704022470442701L; 
    private Long id; 
    private Long score; 
    private String source; 
    private String strainName; 
    private String ncbiProteinGi; 

    @Id 
    @Column(name = "Ortholog_Id") 
    public Long getId() { 
     return id; 
    } 

    public void setId(Long id) { 
     this.id = id; 
    } 

    @Column(name = "SCORE") 
    public Long getScore() { 
     return this.score; 
    } 

    public void setScore(Long score) { 
     this.score = score; 
    } 

    @Column(name = "SOURCE") 
    public String getSource() { 
     return this.source; 
    } 

    public void setSource(String source) { 
     this.source = source; 
    } 

    @Column(name = "STRAINNAME") 
    public String getStrainName() { 
     return this.strainName; 
    } 

    public void setStrainName(String strainName) { 
     this.strainName = strainName; 
    } 

    @Column(name = "NCBIPROTEINGI") 
    public String getNcbiProteinGi() { 
     return ncbiProteinGi; 
    } 

    public void setNcbiProteinGi(String ncbiProteinGi) { 
     this.ncbiProteinGi = ncbiProteinGi; 
    } 
}

TestController.java

@Controller 
@RequestMapping(value = "/test.html") 
public class TestController { 
    @Resource 
    private LookupService lookupService; 
    @RequestMapping(params = "method=test") 
    public void testSameWhOrthologSet(HttpServletRequest request, HttpServletResponse response) throws IOException, 
      ServletException { 
     Protein mainProtein = lookupService.findProteinById(3635595L); 

     Protein secondProtein = lookupService.findProteinById(2486174L); 
     // exception on calling mainProtein.getWhOrthologs() 
     for (WhOrtholog whOrtholog : mainProtein.getWhOrthologs()) { 
      // do my normal process 
     } 
    } 

    public LookupService getLookupService() { 
     return lookupService; 
    } 

    public void setLookupService(LookupService lookupService) { 
     this.lookupService = lookupService; 
    } 

}

LookupService.java

public Protein findProteinById(Long proteinId) { 
    return lookupDao.getProteinById(proteinId); 
}

LookupDao.java

public Protein getProteinById(Long proteinId) { 
    Protein protein = (Protein) getSessionFactory().getCurrentSession().get(Protein.class, proteinId); 
    return protein; 
}

трассировки стека исключений

[15:22:19][DEBUG] [org.springframework.orm.hibernate3.support.OpenSessionInViewFilter] Closing single Hibernate Session in OpenSessionInViewFilter 
[15:22:19][DEBUG] [org.springframework.orm.hibernate3.support.OpenSessionInViewFilter] Closing single Hibernate Session in OpenSessionInViewFilter 
[15:22:19][DEBUG] [org.springframework.orm.hibernate3.support.OpenSessionInViewFilter] Closing single Hibernate Session in OpenSessionInViewFilter 
[15:22:19][DEBUG] [org.hibernate.jdbc.ConnectionManager] releasing JDBC connection [ (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)] 
[15:22:19][DEBUG] [org.hibernate.jdbc.ConnectionManager] transaction completed on session with on_close connection release mode; be sure to close the session to release JDBC resources! 
Feb 04, 2016 3:22:19 PM org.apache.catalina.core.StandardWrapperValve invoke 
SEVERE: Servlet.service() for servlet [springDispatcher] in context with path [/brc] threw exception [Request processing failed; nested exception is org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: org.test.model.Protein.whOrthologs, no session or session was closed] with root cause 
org.hibernate.LazyInitializationException: failed to lazily initialize a collection of role: org.test.model.Protein.whOrthologs, no session or session was closed 
    at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationException(AbstractPersistentCollection.java:383) 
    at org.hibernate.collection.AbstractPersistentCollection.throwLazyInitializationExceptionIfNotConnected(AbstractPersistentCollection.java:375) 
    at org.hibernate.collection.AbstractPersistentCollection.initialize(AbstractPersistentCollection.java:368) 
    at org.hibernate.collection.AbstractPersistentCollection.read(AbstractPersistentCollection.java:111) 
    at org.hibernate.collection.PersistentSet.iterator(PersistentSet.java:186) 
    at org.test.web.TestController.testSameWhOrthologSet(ViprGeneDetailController.java:742) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:497) 
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176) 
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:440) 
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:428) 
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:925) 
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:856) 
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953) 
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:624) 
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829) 
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:731) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330) 
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118) 
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:139) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:154) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:199) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:110) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:50) 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87) 
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342) 
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192) 
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160) 
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343) 
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:232) 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:232) 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:232) 
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Applicatio 
nFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343) 
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260) 
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241) 
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208) 
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220) 
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122) 
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505) 
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170) 
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103) 
    at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956) 
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116) 
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423) 
    at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079) 
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625) 
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    at java.lang.Thread.run(Thread.java:745)

источник

2016-02-04 shokulei

это ленивый fecth исключение. вы должны инициализировать whOrthologs перед возвратом объекта

public Protein getProteinById(Long proteinId) { 
    Protein protein = (Protein) getSessionFactory().getCurrentSession().get(Protein.class, proteinId); 
    protein.getWhOrthologs(); 
    return protein; 
}

источник

2016-02-04 20:42:17

Thanks Kakashi! Мы используем OpenSessionInViewFilter, который позволяет нам получить ленивый загруженный PersistentSet на более позднем этапе. – shokulei

ваш фильтр включает в себя все endpoind. например /* this mach all endpoints –

Правильно, мы протестировали его работоспособно, за исключением случаев, когда загружаются две разные записи протеина, которые имеют одну и ту же совокупность WhOrthologs в той же транзакции. Если я перемещаю цикл for в примере выше до загрузки второгоProtein, он отлично работает. Но то, что я не могу понять, является причиной того, что порядок цикла for имеет значение. – shokulei

Доступ к двум объектам имеет то же значение PersistentSet, что сеанс или сеанс не закрыты?

ответ

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