Java Platform, Enterprise Edition: The Java EE Tutorial
58.3 Administration InterfaceThe administration interface of Duke's Tutoring is used by the tutoring center staff to manage the data employed by the main interface: the students, the students' guardians, and the addresses. The administration interface uses many of the same components as the main interface. Additional components that are only used in the administration interface are described here.
58.3.1 Enterprise Beans Used in the Administration InterfaceThe following enterprise bean, in the dukestutoring.ejb package of the dukes-tutoring-war project, is used in the administration interface.
AdminBean: A stateless session bean for all the business logic used in the administration interface. Calls security methods to allow invocation of the business methods only by authorized users.
The following Facelets files, under src/main/webapp/, are used in the administration interface:
admin/adminTemplate.xhtml: Template for the administration interface
admin/index.xhtml: Landing page for the administration interface
login.xhtml: Login page for the security-constrained administration interface
loginError.xhtml: Page displayed if there are errors authenticating the administration user
admin/address directory: Pages that allow you to create, edit, and delete Address entities
admin/guardian directory: Pages that allow you to create, edit, and delete Guardian entities
admin/student directory: Pages that allow you to create, edit, and delete Student entities
resources/components/formLogin.xhtml: Composite component for a login form using Java EE security
WEB-INF/includes/adminNav.xhtml: XHTML fragment for the administration interface's navigation bar
The CDI managed beans used in the administration interface are located in the dukestutoring.web package in the dukes-tutoring-war project.
StudentBean.java: A managed bean for the Facelets pages used to create and edit students. The first and last names have Bean Validation annotations that require the fields to be filled in. The phone numbers have Bean Validation annotations to ensure that the submitted data is well-formed.
GuardianBean.java: A managed bean for the Facelets pages used to create guardians for and assign guardians to students. The first and last names have Bean Validation annotations that require the fields to be filled in. The phone numbers have Bean Validation annotations to ensure that the submitted data is well-formed.
AddressBean.java: A managed bean for the Facelets pages used to create addresses for students. The street, city, province, and postal code attributes have Bean Validation annotations that require the fields to be filled in, and the postal code attribute has an additional annotation to ensure that the data is properly formed.
The following helper classes, found in the dukes-tutoring-war project's dukestutoring.web.util package, are used in the administration interface.
EntityConverter: A parent class to StudentConverter and GuardianConverter that defines a cache to store the entity classes when converting the entities for use in JavaServer Faces user interface components. The cache helps increase performance. The cache is stored in the JavaServer Faces context.
StudentConverter: A JavaServer Faces converter for the Student entity class. This class contains methods to convert Student instances to strings and back again, so they can be used in the user interface components of the application.
GuardianConverter: Similar to StudentConverter, this class is a converter for the Guardian entity class.
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