NPE error when navigating to next page based on lov selection

Question

hi there am having problem whn navigating to next page based on lov selection,when i select value and click the button to navigate am geting NPE ERROR
{code}
<DCUtil> <findSpelObject> [598] DCUtil, returning:oracle.jbo.uicli.binding.JUFormBinding, for uam_view_pageDefs_SelectOrgPageDef_WEB_INF_Updatetaskflow_definition_xml_Updatetaskflow_definition
<DCIteratorBinding> <releaseDataInternal> [599] Releasing iterator binding:variables
<DCIteratorBinding> <releaseDataInternal> [600] Releasing iterator binding:UpdUamOrganisationLovIterator
<DCIteratorBinding> <releaseDataInternal> [601] Releasing iterator binding:UpdUamOrganisation1Iterator
<DCIteratorBinding> <releaseDataInternal> [602] Releasing iterator binding:UamUserdetailsViewVo1Iterator
<XmlErrorHandler> <handleError> ADF_FACES-60096:Server Exception during PPR, #1
javax.servlet.ServletException: java.lang.NullPointerException
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
    at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
    at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
    at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
    at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:205)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:106)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
    at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:271)
    at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)
    at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:179)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)
    at java.security.AccessController.doPrivileged(Native Method)
    at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
    at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:442)
    at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)
    at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)
    at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:139)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
    at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
    at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
    at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
    at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
    at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2277)
    at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
    at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
    at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
    at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
Caused by: javax.faces.el.EvaluationException: java.lang.NullPointerException
    at org.apache.myfaces.trinidad.component.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:51)
    at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:102)
    at org.apache.myfaces.trinidad.component.UIXCommand.broadcast(UIXCommand.java:190)
    at oracle.adf.view.rich.component.fragment.UIXRegion.broadcast(UIXRegion.java:148)
    at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.broadcastEvents(LifecycleImpl.java:1018)
    at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:386)
    at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:194)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
    ... 38 more
Caused by: java.lang.NullPointerException
    at showSelectedOrg(OrgDetails.java:2455)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at 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 org.apache.myfaces.trinidad.component.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:46)
    ... 45 more
THIS IS THE LINE AM GETING THE ERROR
method.getParamsMap().put("rowKey", newVal);
<af:selectOneChoice value="#{bindings.Orgid1.inputValue}"
                              required="true"
                              id="soc1" autoSubmit="true" valuePassThru="true"
                              contentStyle="width:145px">
            <f:selectItems value="#{bindings.Organisationid.items}" id="si1"/>
          </af:selectOneChoice>
<af:commandButton text="UpdateOrganisation"
                            id="cb1"
                            action="#{pageFlowScope.addMember.showSelectedOrg}"/>
public String showSelectedOrg() {
/* if(getorgids() == null ||getorgids().equals(null)){
JSFUtils.addFacesErrorMessage("Select Atleast One Organisation");
JSFUtils.showFacesErrorMessage("Select Atleast One Organisation");
BindingContext lBindingContext = BindingContext.getCurrent();
BindingContainer bindings = lBindingContext.getCurrentBindingsEntry();
// get the list binding for the Organisation lov
JUCtrlListBinding list = (JUCtrlListBinding)bindings.get("Organisationid");
// get the selected index from the list which is stored in the Orgidd1 attribute
AttributeBinding attr = (AttributeBinding)bindings.getControlBinding("Orgid1");
Integer selid = (Integer)attr.getInputValue();
// load the listdata
Object row = list.getDisplayData();
// get the selected row from the list
Row lFromList = (Row)list.getValueFromList(selid);
// from the row we get the PK the orgnasationId
Object lAttribute = lFromList.getAttribute("Organisationid");
Object orgname = lFromList.getAttribute("Organisationname");
Number newVal = (Number)lAttribute;
String neworg = (String)orgname;
_logger.info("Information: selected Organisation = " + newVal);
System.out.println("neworg " + newVal);
System.out.println("testorg " + neworg);
selectedState = neworg;
// get the MethodAction for setCurrentRowWithKeyValue
OperationBinding method = bindings.getOperationBinding("setCurrentRowWithKeyValue");
// set hte needed parameter as the organisation id
method.getParamsMap().put("rowKey", newVal);
method.execute();
// after execution check for errors
List errors = method.getErrors();
Exception ex = (Exception)errors.get(0);
FacesMessage msg = new FacesMessage(FacesMessage.SEVERITY_ERROR, ex.getMessage(), "Select Atleast One Organisationtest");
FacesContext.getCurrentInstance().addMessage(null, msg);
// keep on page in case of an error
// navigate to the next page
return "show";
{code}
am in jdeveloper 11.1.1.6.0

Answer 1

adf009, please read the post I posted the link to in my previous replay. The old code format tag don't work in the new forum!
Still the same error. The stack trace still points to it, you only need to read it carefulle
javax.faces.el.EvaluationException: java.lang.NullPointerException
    at org.apache.myfaces.trinidad.component.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:51)
Caused by: java.lang.NullPointerException
    OrgDetails.showSelectedOrg(OrgDetails.java:2456)
The origin is
method.execute();
and the real reason is
MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:51);
What does it tell you?
Timo