HTML and CSS Reference
In-Depth Information
As shown in the bolded lines, the Action column shows the available action based on the user role using
#{request.isUserInRole}
:
If the user is a member in
•
megaAppUser
group (i.e., Mega App user), then the only available
action is
"Request Copy"
.
If the user is a member in
megaAppAdmin
group (i.e., Mega App administrator), then the
available actions are (
"Delete Book"
and
"Download Book"
).
In all of the operations inside data table (
"Request Copy"
,
"Delete Book"
, and
"Download Book"
), a
property action listener is executed in order to bind the currently selected book (
#{currentBook}
) with the
(
#{bookSearchBacking.selectedBook}
) property before performing the actual action. Listing 13-27 shows
BookSearchBacking
CDI bean.
•
Listing 13-27.
BookSearchBacking CDI Bean
package com.jsfprohtml5.megaapp.backing;
import com.jsfprohtml5.megaapp.model.Book;
import com.jsfprohtml5.megaapp.model.BookRequest;
import com.jsfprohtml5.megaapp.model.Constants;
import com.jsfprohtml5.megaapp.model.MegaUser;
import com.jsfprohtml5.megaapp.service.BookManagerLocal;
import com.jsfprohtml5.megaapp.service.BookRequestManagerLocal;
import com.jsfprohtml5.megaapp.service.exception.BookNotFound;
import com.jsfprohtml5.megaapp.service.exception.BookRequestAlreadyExists;
import java.io.IOException;
import java.io.OutputStream;
import java.io.Serializable;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.EJB;
import javax.faces.application.FacesMessage;
import javax.faces.context.ExternalContext;
import javax.inject.Named;
import javax.faces.view.ViewScoped;
@Named
@ViewScoped
public class BookSearchBacking extends BaseBacking implements Serializable {
@EJB
private BookManagerLocal bookManager;
@EJB
private BookRequestManagerLocal bookRequestManager;
private List<Book> bookList;
private String searchTitle;
private String infoMessage;
private Book selectedBook;
