Hi,
I have the following actionEvent method:
public void saveStudents(ActionEvent event){
SelectableApplicant selectableApplicant = null;
java.util.ArrayList selectableApplicants=null;
UIComponent tmpComponent = event.getComponent();
while (null != tmpComponent && !(tmpComponent instanceof UIData)) {
tmpComponent = tmpComponent.getParent();
Object tmpRowData = ((UIData) tmpComponent).getRowData();
if (tmpRowData instanceof SelectableApplicant) {
selectableApplicant = (SelectableApplicant) tmpRowData;
selectableApplicants.add(selectableApplicant);
}
}
The value of dataTable is applications (a list of SelectableApplicant
objects). I am trying to put these object into selectableApplicants
list. What I have done wrong here? I am getting following error
message:
I get the following error:
javax.faces.el.EvaluationException: /pages/applicationProcess.xhtml
@70,126 actionListener="#{applicationProcess.saveStudents}":
java.lang.ClassCastException: javax.faces.component.html.HtmlPanelGrid
com.sun.facelets.el.LegacyMethodBinding.invoke(LegacyMethodBinding.java:73)
javax.faces.component.UICommand.broadcast(UICommand.java:86)
javax.faces.component.UIViewRoot._broadcastForPhase(UIViewRoot.java:94)
javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:168)
org.apache.myfaces.lifecycle.LifecycleImpl.invokeApplication(LifecycleImpl.java:343)
org.apache.myfaces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:86)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:137)
org.apache.myfaces.webapp.filter.ExtensionsFilter.doFilter(ExtensionsFilter.java:144)
Thanks for all the helps!
Damar
On 11/10/06, Gerald Müllan <[EMAIL PROTECTED]> wrote:
Hi,
speaking in code, it would be something like this:
public void deleteRow(ActionEvent actionEvent)
{
UIData uiData = JsfUtils.getUIDataParent(actionEvent);
getList().remove(uiData.getRowIndex());
}
In JsfUtils:
public static UIData getUIDataParent(ActionEvent e)
{
UIComponent component = e.getComponent();
while (component != null && !(component instanceof UIData))
{
component = component.getParent();
}
return (UIData) component;
}
cheers,
Gerald
On 11/10/06, Damar Thapa <[EMAIL PROTECTED]> wrote:
> Hi,
>
>
> Sorry to bother you all again!
>
> What is the command in action event method to get the dataTable's data
> so as to manipulate it?
>
> I will start googling for this tonight.
>
> Thanks,
>
> Damar
>
> On 11/9/06, Damar Thapa <[EMAIL PROTECTED]> wrote:
> > Thanks, Simon.
> >
> > I will try this.
> >
> > Damar
> >
> >
> > On 11/9/06, Simon Kitching <[EMAIL PROTECTED]> wrote:
> > > Hi Damar,
> > >
> > > I think one way to do this is write a simple class:
> > > public class SelectableApplicant {
> > > private boolean isSelected;
> > > private Applicant applicant;
> > > // add getters/setters for above
> > > }
> > >
> > > Change applicationProcess.applicants to return a list of
> > > SelectableApplicant rather than Applicant directly.
> > >
> > > Your JSP columns can be:
> > > <h:column>
> > > <t:selectBooleanCheckbox .. value="#{application.selected}"/>
> > > </h:column>
> > >
> > > <h:column>
> > > <h:outputText value="#{application.applicant.firstName}"/>
> > > </h:column>
> > >
> > > etc.
> > >
> > > Obviously, you can now iterate over the rows in the data model, checking
> > > the boolean flag and if set processing the associated applicant object.
> > >
> > > Regards,
> > >
> > > Simon
> > >
> > > Damar Thapa wrote:
> > > > Hi,
> > > >
> > > > Thanks for your help – truly appreciated.
> > > >
> > > > Now, I am in the last stage of this problem, ie I have to save the
> > > > data from the dataTable into a new file and in new Class structure. It
> > > > may be straight forward, anyway, I explain what I am trying to do.
> > > > The following is the snapshot of my dataTable:
> > > >
> > > > <t:dataTable id="applicantsData"
> > > > ……
> > > > ……
> > > > var="application"
> > > > value="#{applicationProcess.applications}"
> > > > border="1"
> > > > preserveDataModel="false">
> > > > <h:column>
> > > > <f:facet name="header"><h:outputText value="Selected"/></f:facet>
> > > > <t:selectBooleanCheckbox forceId="true" id="chk"
> > > > onclick="onChangeSelect(this);"
> > > > value="#{applicationProcess.selected}"/>
> > > > </h:column>
> > > >
> > > > <h:column>
> > > > <f:facet name="header"><h:outputText value="First Name"/></f:facet>
> > > > <h:outputText value="#{application.firstName}"/>
> > > > </h:column>
> > > >
> > > > Surname,
> > > > Class
> > > > ….
> > > >
> > > >
> > > > </t:dataTable>
> > > >
> > > > The dataTable is using applicationProcess.applications list, which is
> > > > a list of Applicant object. Applicant Object has firstName, surname,
> > > > class, etc. and I have added <t:selectBooleanCheckBox> to determine if
> > > > the individual applicants are selected (and its value ie
> > > > applicationProcess.selected is not the property of Applicant Class).
> > > >
> > > > What I have to do is iterate on the rows of dataTable and if the
> > > > <selectBooleanCheckbox> is checked, put it in another List. How can I
> > > > do this?
> > > >
> > > > In the following,say:
> > > >
> > > > public void saveData(ActionEvent event){
> > > >
> > > > FacesContect context=FacesContext.getCurrentInstance();
> > > > List aList=event.getComponent()…..
> > > > …..
> > > >
> > > > In the above, does event returns List from the dataTable? The value
> > > > of <selectBooleanCheckbox> ie applicationProcess.selected is not the
> > > > property of <Applicant> class, is it going to be the problem>
> > > >
> > > >
> > > > Any pointers would be highly appreciated, and sorry for lengthy and
> > > > too novice questions.
> > > >
> > > > With regards,
> > > >
> > > > Damar
> > > >
> > >
> > >
> >
> >
> > --
> > With regards,
> >
> > Damar Thapa
> >
>
>
> --
> With regards,
>
> Damar Thapa
>
--
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With regards,
Damar Thapa
