Selecting a particular row in Datatable – JSF

Selecting a particular row in Datatable in a web-app which is developed on JSF,If the requirements is to display data in the datatable with check boxes in every row and user will select a particular row and then clicks the respective buttons to do the operation.

Html Page for Displaying DataTable

Sample:

<table align="center">
   <tr>
   <td>
        <h:dataTable border="1" cellpadding="2" cellspacing="0" headerClass="headerClass" footerClass="footerClass"
                       rowClasses="rowClass1" styleClass="dataTable" value="#{beanname.data}" var="pagination" binding="#{beanname.datatable}">
<h:column>
<f:facet name="header">
 <h:outputText value="Select"/>
</f:facet>
 <h:selectBooleanCheckbox id="selectid" styleClass="selectBooleanCheckbox" binding="#{beanname.checked}">
         </h:selectBooleanCheckbox>
</h:column>
<h:column>
<f:facet name="header">
 <h:outputText value="Header Variable"/>
</f:facet>
<h:outputText value="#{pagination.headerid}"/>
            <h:inputHidden id="hidden" value="#{pagination.variable2}" binding="#{beanname.variable2}" />
</h:column>
<h:column>
<f:facet name="header">
 <h:outputText value="Header Variable1"/>
</f:facet>
<h:outputText value="#{pagination.variable2}"/>
</h:column>
<h:column>
<f:facet name="header">
 <h:outputText value="Header Variable2"/>
</f:facet>
<h:outputText value="#{pagination.variable3}"/>
</h:column>
</h:dataTable><BR>
<h:commandButton value="Opertion1" action="actionparam" id="Opertion1ID" >
   <f:actionListener type="ListenerClassName" /></h:commandButton>
<h:commandButton value="View Opertion1" action="actionparam1" id="Opertion2ID" >
   <f:actionListener type="com.anz.cpr.listener.TransactionHeaderListener" /></h:commandButton>
   <h:commandButton value="Opertion1 TxHeader" action="actionparam2" id="Opertion3ID">
   <f:actionListener type="ListenerClassName" />
   </h:commandButton>
           </td></tr>
</table>

Java Bean which holds the data (Backing Bean)

This bean is used by the above page to display the data
beanname.methodname

getData() method returns a list which contains the DB data

In the Bean create a method which will return a list which contains bean Object

Sample :

Public class SampleBean
{
 private String variable;
 private String variable1;
 private String variable2;
 private UISelectBoolean checked;
 private UIData datatable;
 public List tbllist;
/* Getter Setter Methods for variable1,2,3 and for other variables*/
 public List getData()
 {
  /* Query DB and get the Resultloop through the result setsample i am using hibernateget Session for hibernate*/
  List hquery=session.createQuery("from XYZ").list();
  if (hquery != null && hquery.size() > 0)
  {
   tbllist=new ArrayList(hquery.size());
   for (int i=0; i< hquery.size(); i++)
   {
    Tblxyz xyz=(Tblxyz)hquery.get(i);
    SampleBean bean=new SampleBean();
    /* get value from the db and set in the bean */
    tbllist.add(bean);
   }
  }
 }
}

ListenerBean

Since we are Implementing ActionListener we need implement the methods

public BeanListener implements ActionListener
{
 public void processAction(ActionEvent event) throws AbortProcessingException
 {
 /* This will give the id name of the particular h-link which
 * generated this action
 * /
 String sCommandName=event.getComponent().getId();
 /*Getting the faces context*/
 FacesContext context=FacesContext.getCurrentInstance();

 /* Since we have three H-links we are cheking which one got triggred
 * i.e operation1ID got triggred now i need that particular row data
 */
 if(sCommandName.equals("Opertion1ID"))
 {
  ValueBinding valueBinding=Util.getValueBinding("#{beanname}");
  SampleBean samplbean=(SampleBean)valueBinding.getValue(context);
  /* since we have used binding the jsf we can get the entire datatable from    the JSF page*/
  UIData datatable=samplbean.getDatatable();
  /* getting the totalRowCount */
  int rowCount=datatable.getRowCount();
  /* Looping through the datatable to check which row got selected*/
  for (int index = 0; index <  hvalue="samplbean.getVariable2().getValue().toString();">