Java Reference
In-Depth Information
@NotNull
private String inputString;
private ToDo toDo;
private List<ToDo> toDos;
The
createTask
method called by the Submit button calls the
createToDo
method
of
RequestBean
:
public void createTask() {
this.toDo = request.createToDo(inputString);
}
The
getToDos
method, which is called by the
todolist.xhtml
page, calls the
getToDos
method of
RequestBean
:
public List<ToDo> getToDos() {
return request.getToDos();
}
To force the Facelets page to recognize an empty string as a null value and return
an error, the
web.xml
file sets the context parameter
javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL
to
true
:
<context-param>
<param-name>
javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL
</param-name>
<param-value>true</param-value>
</context-param>
The
todolist.xhtml
page is a little more complicated than the
index.html
page.
It contains a
dataTable
element that displays the contents of the
ToDo
list. The body
of the page looks like this:
<body>
<h2>To Do List</h2>
<h:form id="showlist">
<h:dataTable var="toDo"
value="#{listBean.toDos}"
