Aynı nesnenin hazırda beklemedeki iki farklı oturumla ilişkilendirilmesini önleyin

Question

jsf 1.2, hazırda bekletme, richfaces 3.3.0GA ve facelets öğelerini kullanın.

public List<Rater> getFreeRaters(){ 
    GP myGP = (GP) user; 
    update(myGP.getContract()); 
    ArrayList<Rater> raters = new ArrayList<Rater>(myGP.getContract().getRaters()); 
    ArrayList<Rater> selectedRaters = this.getSelectedRaters(); 
    raters.removeAll(selectedRaters); 
    return raters; 

} 

ve UI için bu kodu:

public class HibernateSessionRequestFilter implements Filter { 

private static Log log = LogFactory.getLog(HibernateSessionRequestFilter.class); 

private SessionFactory sf; 

public void doFilter(ServletRequest request, 
        ServletResponse response, 
        FilterChain chain) 
     throws IOException, ServletException { 
    HttpServletResponse resp= (HttpServletResponse) response; 
    try { 
     log.info("Starting a database transaction"); 
     Session session = sf.getCurrentSession(); 
     session.beginTransaction(); 

     // Call the next filter (continue request processing) 
     chain.doFilter(request, resp); 

     // Commit and cleanup 
     log.info("Committing the database transaction"); 

     session.getTransaction().commit(); 


    } catch (StaleObjectStateException staleEx) {... 

sorun gelir:

<a4j:form id="gradersForm" ajaxSingle="true"> 
    <rich:listShuttle sourceValue="#{user.gradersTab.freeRaters}" id="gradersTab_listShuttle" 
    targetValue="#{user.gradersTab.selectedRaters}" var="rater" listsHeight="150" 
     sourceListWidth="130" targetListWidth="130" sourceCaptionLabel="Available Items" 
     targetCaptionLabel="Currently Active Items" > 
     <rich:column> 
      <h:outputText value="#{rater.username}"></h:outputText> 
     </rich:column> 
    </rich:listShuttle>   
    <a4j:commandButton value="Save"></a4j:commandButton> 

</a4j:form> 

Bu benim oturumu filtre edilir

benim yedekleme fasulye bu kodu var UI, AJAX yoluyla aynı anda iki veya daha fazla yeniden işlendiğinde. İki farklı istekleri olan, her biri bir Session alır ve ikisi de bitirmek ve session.close() yapmak yeterli zamanınız vardı çünkü nesne aynı anda her ikisini de eklenecek çalışılmıştır, bu yüzden hazırda bekletme bir istisna org.hibernate.HibernateException: Illegal attempt to associate a collection with two open sessions

atar

Bunun olmasını önlemek için herhangi bir öneriniz var mı? Teşekkürler.

Güncelleme: web.xml yerine update ait merge sorunu çözmek için görünür Görünüşe kullanarak

<?xml version="1.0" encoding="UTF-8"?> 
<web-app id="WebApp_ID" version="2.5" 
xmlns="http://java.sun.com/xml/ns/javaee" 
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web- app_2_5.xsd"> 
<display-name>eyeprevent</display-name> 
<context-param> 
<param-name>javax.faces.CONFIG_FILES</param-name> 
<param-value>/WEB-INF/faces-config.xml</param-value> 
</context-param> 
<context-param> 
<param-name>javax.faces.DEFAULT_SUFFIX</param-name> 
<param-value>.xhtml</param-value> 
</context-param> 
<context-param> 
<param-name>javax.faces.STATE_SAVING_METHOD</param-name> 
<param-value>server</param-value> 
</context-param> 
<context-param> 
<param-name>facelets.LIBRARIES</param-name> 
<param-value>/WEB-INF/functions.taglib.xml</param-value> 
</context-param> 
<context-param> 
<param-name>org.richfaces.SKIN</param-name> 
<param-value>#{user.skin}</param-value> 
</context-param> 
<context-param> 
<param-name>org.richfaces.CONTROL_SKINNING</param-name> 
<param-value>enable</param-value> 
</context-param> 
<filter> 
<filter-name>HibernateFilter</filter-name> 
<filter-class>com.eyeprevent.util.HibernateSessionRequestFilter</filter-class> 
</filter> 
<filter> 
<display-name>RichFaces Filter</display-name> 
<filter-name>richfaces</filter-name> 
<filter-class>org.ajax4jsf.Filter</filter-class> 
</filter> 
<filter-mapping> 
<filter-name>HibernateFilter</filter-name> 
<url-pattern>/pages/*</url-pattern> 
</filter-mapping> 
<filter-mapping> 
<filter-name>HibernateFilter</filter-name> 
<url-pattern>/upload/*</url-pattern> 
</filter-mapping> 

<filter-mapping> 

<filter-name>richfaces</filter-name> 
<servlet-name>Faces Servlet</servlet-name> 
<dispatcher>REQUEST</dispatcher> 
<dispatcher>FORWARD</dispatcher> 
<dispatcher>INCLUDE</dispatcher> 
</filter-mapping> 
<listener> 
<listener-class>com.sun.faces.config.ConfigureListener</listener-class> 
</listener> 
<listener> 
<listener-class>com.eyeprevent.util.MySessionListener</listener-class> 
</listener> 
<servlet> 
<display-name>EPConnectServlet</display-name> 
<servlet-name>EPConnectServlet</servlet-name> 
<servlet-class>com.eyeprevent.servlets.EPConnectServlet</servlet-class> 
<init-param> 
<param-name>imagePath</param-name> 
<param-value>/home/pako/images</param-value> 
</init-param> 
<load-on-startup>1</load-on-startup> 
</servlet> 
<servlet> 
<servlet-name>imageServlet</servlet-name> 
<servlet-class>com.eyeprevent.servlets.ImageServlet</servlet-class> 
<init-param> 
<param-name>imagePath</param-name> 
<param-value>/home/pako/images</param-value> 
</init-param> 
</servlet> 
<servlet> 
<servlet-name>Faces Servlet</servlet-name> 
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class> 
<load-on-startup>1</load-on-startup> 
</servlet> 
<servlet-mapping> 
<servlet-name>EPConnectServlet</servlet-name> 
<url-pattern>/upload/EPConnectServlet</url-pattern> 
</servlet-mapping> 
<servlet-mapping> 
<servlet-name>imageServlet</servlet-name> 
<url-pattern>/image/*</url-pattern> 
</servlet-mapping> 
<servlet-mapping> 
<servlet-name>Faces Servlet</servlet-name> 
<url-pattern>*.xhtml</url-pattern> 
</servlet-mapping> 
<session-config> 
<session-timeout>0</session-timeout> 
</session-config> 
<welcome-file-list> 
<welcome-file>index.html</welcome-file> 
<welcome-file>index.xhtml</welcome-file> 
<welcome-file>index.htm</welcome-file> 
<welcome-file>index.jsp</welcome-file> 
<welcome-file>default.html</welcome-file> 
<welcome-file>default.htm</welcome-file> 
<welcome-file>default.jsp</welcome-file> 
<welcome-file>pages/login.xhtml</welcome-file> 
</welcome-file-list> 
<error-page> 
<error-code>404</error-code> 
<location>/pages/error.xhtml</location> 
</error-page> 
<error-page> 
<error-code>401</error-code> 
<location>/pages/unauthorized.xhtml</location> 
</error-page> 
<login-config> 
<auth-method>BASIC</auth-method> 
</login-config> 
</web-app> 

Answer 1

...

merge döner yeni güncellenmiş örneği, yapmanız gereken bu yüzden unutmayın

myInstance = (myInstanceClass) Session.merge(myInstance);