RE: Problem binding Table with JPA

Hi david, i paste the entire exception that appear when i try to do this..
 
return (Friend[]) query.getResultList().toArray( new Friend[0] );
 
this is the exception:
 
java.lang.ArrayStoreException
        at java.lang.System.arraycopy(Native Method)
        at java.util.Arrays.copyOf(Arrays.java:2763)
        at java.util.Vector.toArray(Vector.java:671)
        at org.fcartu.controller.FriendController.getFrinds(FriendController.java:33)
        at org.fcartu.web.SessionBean1.updateFriends(SessionBean1.java:40)
        at org.fcartu.web.SessionBean1.init(SessionBean1.java:93)
        at com.sun.rave.web.ui.appbase.servlet.LifecycleListener.attributeAdded(LifecycleListener.java:327)
        at org.apache.catalina.session.StandardSession.setAttribute(StandardSession.java:1706)
        at org.apache.catalina.session.StandardSessionFacade.setAttribute(StandardSessionFacade.java:163)
        at com.sun.faces.context.SessionMap.put(ExternalContextImpl.java:972)
        at com.sun.faces.application.ApplicationAssociate.createAndMaybeStoreManagedBeans(ApplicationAssociate.java:540)
        at com.sun.faces.el.ManagedBeanELResolver.getValue(ManagedBeanELResolver.java:82)
        at javax.el.CompositeELResolver.getValue(CompositeELResolver.java:143)
        at com.sun.faces.el.FacesCompositeELResolver.getValue(FacesCompositeELResolver.java:64)
        at com.sun.el.parser.AstIdentifier.getValue(AstIdentifier.java:86)
        at com.sun.el.parser.AstValue.getValue(AstValue.java:127)
        at com.sun.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:206)
        at com.sun.webui.jsf.component.TableRowGroupBase.getSourceData(TableRowGroupBase.java:2758)
        at com.sun.webui.jsf.component.TableRowGroupBase.getTableRowDataProvider(TableRowGroupBase.java:582)
        at com.sun.webui.jsf.component.TableRowGroupBase.getRowKey(TableRowGroupBase.java:505)
        at com.sun.webui.jsf.component.TableRowGroupBase.getClientId(TableRowGroupBase.java:1353)
        at javax.faces.webapp.UIComponentClassicTagBase.doStartTag(UIComponentClassicTagBase.java:1137)
        at org.apache.jsp.FindFriend_jsp._jspx_meth_webuijsf_tableRowGroup_0(FindFriend_jsp.java from :855)
        at org.apache.jsp.FindFriend_jsp._jspx_meth_webuijsf_table_0(FindFriend_jsp.java from :821)
        at org.apache.jsp.FindFriend_jsp._jspx_meth_webuijsf_panelLayout_1(FindFriend_jsp.java from :652)
        at org.apache.jsp.FindFriend_jsp._jspx_meth_webuijsf_form_0(FindFriend_jsp.java from :417)
        at org.apache.jsp.FindFriend_jsp._jspx_meth_webuijsf_body_0(FindFriend_jsp.java from :368)
        at org.apache.jsp.FindFriend_jsp._jspx_meth_webuijsf_html_0(FindFriend_jsp.java from :239)
        at org.apache.jsp.FindFriend_jsp._jspx_meth_webuijsf_page_0(FindFriend_jsp.java from :198)
        at org.apache.jsp.FindFriend_jsp._jspx_meth_f_view_0(FindFriend_jsp.java from :159)
        at org.apache.jsp.FindFriend_jsp._jspService(FindFriend_jsp.java from :125)
        at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
        at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373)
        at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470)
        at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
        at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:317)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
        at org.apache.catalina.core.ApplicationDispatcher.doInvoke(ApplicationDispatcher.java:853)
        at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:703)
        at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:542)
        at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:474)
        at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:366)
        at com.sun.faces.context.ExternalContextImpl.dispatch(ExternalContextImpl.java:408)
        at com.sun.faces.application.ViewHandlerImpl.executePageToBuildView(ViewHandlerImpl.java:442)
        at com.sun.faces.application.ViewHandlerImpl.renderView(ViewHandlerImpl.java:115)
        at com.sun.rave.web.ui.appbase.faces.ViewHandlerImpl.renderView(ViewHandlerImpl.java:320)
        at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
        at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
        at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
        at com.sun.faces.extensions.avatar.lifecycle.PartialTraversalLifecycle.render(PartialTraversalLifecycle.java:106)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
        at org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:411)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:317)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
        at com.sun.webui.jsf.util.UploadFilter.doFilter(UploadFilter.java:267)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
        at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:198)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:288)
        at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:271)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:202)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
        at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:206)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:150)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:632)
        at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:577)
        at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:571)
        at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1080)
        at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:270)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:637)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:568)
        at com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:813)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:339)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:261)
        at com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:212)
        at com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:265)
        at com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)

if anyone can help i appreciate..
 
thanks,
 
Francisco Cartusciello.


 

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Date: Sat, 12 Apr 2008 00:26:16 -0600
From: thompsonwd40@...
To: nbusers@...
Subject: Re: [nbusers] Problem binding Table with JPA

Hello Francisco,
How far through the tutorial have you gotten, that is which specific step are you on when you get the exception?  Also, show us the exception output up to, and including the ArrayStoreException. 

David

Francisco Cartusciello Blanco wrote:

Hi,

I'm working with the netbeans tutorial USING JAVA PERSISTENCE API WITHIN A VISUAL WEB JSF APPLICATION, i everything is ok before start to bind the data with a Table, the problem is in this part of code:

public Users[] getUsers() {
    EntityManager em = getEntityManager();
    try{
        javax.persistence.Query q = em.createQuery("select c from Users as c");
        return (Users[]) q.getResultList().toArray(new Users[0]);
    } finally {
        em.close();
    }
}


return (Users[]) q.getResultList().toArray(new Users[0]);
 this part throws me.. a ArrayStoreException....and i don't know why...

if anyone can help me.. i appreciate your help!!!


Francisco Cartusciello.
  

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