DCIteratorBinding setting the same value for all the rows.

Question

Hi all,
I have table with on of the column as id. I have made the id column as the hyper link , that takes me to the next page. I am trying to pass the id to the next page. I am using the managed bean for the same. The below code is used to create the link on the column. It sets the action to the function in the bean that sets the id as of the current row.
<tr:column sortProperty="id" sortable="false"
headerText="#{bindings.notification.hints.id.label}"
id="c4">
<tr:commandLink action="choice" text="#{row.bindings.id.inputValue}"
id="cl1" actionListener="#{IdBean.extractID}">
</tr:commandLink>
</tr:column>
below is the IdBean.extratctID()
public void extractID(ActionEvent actionEvent){       
BindingContext bindingContext = BindingContext.getCurrent();
BindingContainer bindings;
bindings = bindingContext.getCurrentBindingsEntry();
DCIteratorBinding iter;
iter = (DCIteratorBinding) bindings.get("notificationIterator");
Row rw;
rw = iter.getCurrentRow();
String id;
id = (String) rw.getAttribute("id");
this.setId2(id);
I am printing the id value on to the next page. But its just returning the vslue of the id for the first row for all the rows of the table.
Any inputs as in do i need to refresh the iterator or something like that.
Reagrds
Sishant

Answer 1

Hi,
Following is the code i have added in my bean
ValueExpression expression = getFacesContext().getApplication().getExpressionFactory().createValueExpression(getFacesContext().getELContext(), "#{pageFlowScope.emp1}", Object.class);
Object id = expression.getValue(getFacesContext().getELContext());
public FacesContext getFacesContext() {
return FacesContext.getCurrentInstance();
JSPX Code -
<af:commandImageLink id="DuncanAngove"
icon="/john.gif" partialSubmit="true"
actionListener="#{Tweets.setEmployeeId}">
<af:setActionListener from="Duncan Angove" to="#{pageFlowScope.emp1}" />
But i am getting NullPointerException. I have tried it with application and request scope as well.
javax.servlet.ServletException
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:277)
     at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
     at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:191)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:97)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
     at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:420)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:247)
     at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:157)
     at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:94)
     at java.security.AccessController.doPrivileged(Native Method)
     at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:313)
     at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:414)
     at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:138)
     at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at oracle.dms.wls.DMSServletFilter.doFilter(DMSServletFilter.java:330)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
     at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.doIt(WebAppServletContext.java:3684)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3650)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
     at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2268)
     at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2174)
     at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1446)
     at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
     at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
Caused by: java.lang.NullPointerException
     at org.apache.myfaces.trinidad.component.UIXComponentBase.getValueExpression(UIXComponentBase.java:231)
     at project1.Tweets.setEmployeeId(Tweets.java:40)
     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(AstValue.java:157)
     at com.sun.el.MethodExpressionImpl.invoke(MethodExpressionImpl.java:283)
     at org.apache.myfaces.trinidadinternal.taglib.util.MethodExpressionMethodBinding.invoke(MethodExpressionMethodBinding.java:53)
     at org.apache.myfaces.trinidad.component.UIXComponentBase.broadcastToMethodBinding(UIXComponentBase.java:1259)
     at org.apache.myfaces.trinidad.component.UIXCommand.broadcast(UIXCommand.java:183)
     at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:475)
     at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:756)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._invokeApplication(LifecycleImpl.java:698)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:285)
     at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:177)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:265)
     ... 35 more
Thanks
Sishant