Designing Enterprise Applicationswith the J2EETM Platform 2nd phần 9 potx

... application such as the sample application, including: • The client tier provided by the browser • The Web tier provided by the server • The EJB tier provided by the server • The enterprise information ... an ItemDetails table. The primary key of the ItemDetails table includes both the ID of the item being described and the locale for the description and other re...

Ngày tải lên: 12/08/2014, 20:22

... demonstrates the user’s right to claim the identity as its own. This section describes the various authentication mechanisms supported by the J2EE platform and how to configure them. 9. 2.2.1 Web Tier Authentication An ... Section 9. 3.7.1 on page 299 ) for the collection. When an unauthenticated user tries to access a pro- tected Web resource, the Web container will prompt t...

Ngày tải lên: 12/08/2014, 20:22

... it to the end of this project without the support of Suzy Pelouch who did an excellent job at pulling together all the pieces. The authors of the J2EE specifications and the developers of the reference implementation ... influ- enced the choices made in developing the sample application: • The need to make rapid and frequent changes to the “look” of the application • T...

Ngày tải lên: 12/08/2014, 20:22

... AM PLATFORM SERVICES 41 With basic authentication, the Web server authenticates a principal using the user name and password obtained from the Web client. Like basic authentication, digest authentication ... should propagate authentication data, the deployer specifies the authentication data for each resource factory reference declared by the enterprise bean. The container us...

Ngày tải lên: 12/08/2014, 20:22

... method. 4. The SignoffHTMLAction object calls the model method that signs the user out of the application. 5. The controller asks the screen flow manager for the next view. 6. The controller forwards the ... occur: 1. The servlet container routes the request to the controller. 2. The controller creates an instance class SignoffHTMLAction and passes the request to i...

Ngày tải lên: 12/08/2014, 20:22

... the parameters in the template file. The templating service replaces each insert tag in the template file with the contents of the subview named by the tag’s parameter attribute. For example, the ... or modify data in request scope and then “forward” the request to another compo- nent. The component to which the request is forwarded then has access to the state. State in...

Ngày tải lên: 12/08/2014, 20:22

... bean types, there are other design choices that you need to make when developing objects for the EJB tier. These choices include the types of objects that should be enterprise beans, and the role an enterprise ... databases. The principal advantage of data access objects is that they decouple the user of the object from the programming mechanism that accesses the underlyin...

Ngày tải lên: 12/08/2014, 20:22

... declared enterprise bean reference. This means that the target enterprise bean must be of the type indicated in the ejb-ref- type element and that the home and remote elements of the target enterprise ... result is a circular dependency. Neither bean can function without the other, and so neither is reusable without the other. In some cases redesign may eliminate these dep...

Ngày tải lên: 12/08/2014, 20:22

... If the identity of the caller is equivalent to a distinguished caller, the component can allow the caller to proceed. If not, the component can prevent the caller from further interaction. The ... Finally, the tag formats the item according to the value of the locale attribute. The locale name follows the standard convention described in Section 10.1.1.1 on page 313;...

Ngày tải lên: 12/08/2014, 20:22

... by the next activity in the sequence. The delegate may also notify the order processing module so that it can maintain its global view of the work flow. Depending on the particular point in the ... an enterprise bean. The class for the EJB home object is generated by the container’s deployment tools. The EJB home object imple- ments the enterprise bean’s home interf...

Ngày tải lên: 12/08/2014, 20:22