Edit row using Radio button and commandButton - jsf

Question

Can I use radio button to select a single row then edit some of data on that row then use
commandButton to submit what I edit it in that row. I'm trying to edit username cell for now as test.
this a snap of my code:
Xadmin.xhtml
<h:form id="form" enctype="multipart/form-data">
<p:growl id="msgs" showDetail="true" />
<p:dataTable id="DT" value="#{Jadmin.messages}"
var="o"
selection="#{Jadmin.selectedUser}"
rowKey="#{o.id}"
style="margin-bottom:20px">
<f:facet name="header">
Users List
</f:facet>
<p:column selectionMode="single" />
<p:column>
<f:facet name="header">
<h:outputText value="id" />
</f:facet>
<h:outputText value="#{o.id}" />
</p:column>
<p:column>
<f:facet name="header">
<h:outputText value="username" />
</f:facet>
<p:inputText value="#{o.username}" />
</p:column>
<f:facet name="footer">
<h:commandButton value="Update" action="#{Jadmin.update}" />
<p:commandButton value="Delete"
action="#{Jadmin.delete}"
ajax="false"
update=":form:msgs"/>
</f:facet>
</p:dataTable>
JadminBeans.java
#ManagedBean(name = "Jadmin")
#SessionScoped
public class JadminBeans implements Serializable {
private static final long serialVersionUID = 1L;
private JadminController selectedUser;
List<JadminController> userslist = new ArrayList<JadminController>();
public List<JadminController> getMessages() {
System.out.println("List<JadminController> getMessages()");
userslist = JadminDAO.getAllUsers();
return userslist;
}
public void delete() {
//System.out.println(usr);
//System.out.println(itemList.remove(item)+"!!");
System.out.println("JadminBeans >> delete() ---------- id= ");
JadminDAO.deleteUser(selectedUser);
}
public JadminController getSelectedUser() {
return selectedUser;
}
public void setSelectedUser(JadminController selectedUser) {
this.selectedUser = selectedUser;
}
public void update() {
//o=(JadminBeans) objct;
JadminDAO.updateUser(selectedUser);
}
}
JadminDAO.java
public static void deleteUser(JadminController user) {
try {
PreparedStatement preparedStatement = connection.prepareStatement("delete from users where id=?");
// Parameters start with 1
preparedStatement.setLong(1, user.getId());
preparedStatement.executeUpdate();
System.out.println("JadminDAO >> deleteUser ----------");
} catch (SQLException e) {
System.out.println("JadminDAO >> deleteUser----------- SQLException :(");
e.printStackTrace();
}
}
public static void updateUser(JadminController user) {
try {
PreparedStatement preparedStatement = connection.prepareStatement("update users username=?, password=?, permission=? where username=?");
// Parameters start with 1
//System.out.println(new java.sql.Date(user.getRegisteredon().getTime()));
preparedStatement.setString(1, user.getUsername());
preparedStatement.setString(2, user.getPassword());
preparedStatement.setString(3, user.getPermission());
//preparedStatement.setDate(3, new java.sql.Date(user.getRegisteredon().getTime()));
preparedStatement.setString(4, user.getUsername());
preparedStatement.executeUpdate();
} catch (SQLException e) {
e.printStackTrace();
}
}
JadminController.java
public class JadminController implements Serializable {
private static final long serialVersionUID = 1L;
private String username, password, permission;
private long id;
// Getters and setters.
}

Answer 1

If you use Editable Datatable you don't need any command button to submit what you've edited.
As shown in the same link, inside in datatable is usually used a selectOneMenu instead of radioButton for making choices.
To use input element inside your datatable don't forget to put <f:facet name="output"></f:facet> and <f:facet name="input"></f:facet>
I hope it helps.