Creating Dynamic h:datatable

[ved.gunjan]

Hi Experts,

Here's my requirment....

I'have to display listing of questions and associated answers in the variety of different UIComponents.

These questions and the control type(UIComponent) are not known at the compile time,so i cant create them on the jsp page.

Questions and its associated control type(UIComponent) ,for the answers,are know at the run-time.

So i have to dynamically generate these UIComponent in the <h:datatable or rather to say in other words i've to dynamically create this datatable.

 

Here's my jsp

--------------------

<f:view>

<h:form id="form1">

<h:commandButton value="Create Controls" id="commandButton1" type="submit" action="#{dynamicQuestions.createQuestionControlAction}" />

<h:dataTable binding="#{dynamicQuestions.dataTable}" value="#{requirementBean.questionList}"

var="questions" border="1" id="RootTable" />

</h:form>

</f:view>

-------------------

The java method

 

Application application = FacesContext.getCurrentInstance().getApplication();
            UIViewRoot uiViewRoot =  FacesContext.getCurrentInstance().getViewRoot();
           
            HtmlDataTable dataTable = (HtmlDataTable) application.createComponent(HtmlDataTable.COMPONENT_TYPE);
            dataTable.setVar("questions");
            //dataTable.setValueBinding("binding", (ValueBinding) application.createValueBinding("#{dynamicQuestions.dataTable}"));
            dataTable.setValueBinding("value", (ValueBinding) application.createValueBinding("#{requirementBean.questionList}"));
            dataTable.setId("test_table");
       
            String vbStr = "#{questions.questionData}";
            ValueBinding vb = FacesContext.getCurrentInstance().getApplication().createValueBinding(vbStr);
            HtmlOutputText output = new HtmlOutputText();
            output.setId("HtmlOutputText1");
            output.setValueBinding("value", vb);
       
            vbStr = "#{questions.itemList}";
            vb = FacesContext.getCurrentInstance().getApplication().createValueBinding(vbStr);
       
            HtmlSelectOneMenu hsom = new HtmlSelectOneMenu();
            hsom.setId("HtmlSelectOneMenu2");
            hsom.setValueBinding("value",vb);
       
            vbStr = "#{questions.itemList}";
            vb = FacesContext.getCurrentInstance().getApplication().createValueBinding(vbStr);
       
            HtmlSelectManyListbox hsmlb = new HtmlSelectManyListbox();
            hsmlb.setId("HtmlSelectManyListbox3");
            hsmlb.setValueBinding("value",vb);
       
       
          HtmlSelectBooleanCheckbox chb=new HtmlSelectBooleanCheckbox();
            chb.setId("HtmlSelectBooleanCheckbox4");
            chb.setValueBinding("value", vb);
       
        //datatable column
            UIColumn column = new UIColumn();
            column.setId("UIColumn4");
            column.getChildren().add(output);
            column.getChildren().add(hsom);
            column.getChildren().add(hsmlb);
       
            HtmlOutputText headerComponent = new HtmlOutputText();
            headerComponent.setId("HtmlOutputTextHeader5");
       
            column.setHeader(headerComponent);
            headerComponent.setValue("columnName= 3");
       
          dataTable.getChildren().add(column);
          uiViewRoot.findComponent("form1").getChildren().add(dataTable);
       

 

Right now im trying to only create these UIComponents , just for testing purpose..

HtmlSelectManyListbox ,HtmlSelectOneMenu,HtmlOutputText

 

But when i pressed the CreateControls button nothing happens i.e there is no output.

Please guide me as to where im going wrong and what is the correct way of creating a dynamic datatable.

 

Waiting for the experts reply...

 

Thanks

Ved

 

 

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