tailieunhanh - professional java user interfaces phần 9

Danh mục đầu tư cá nhân ứng dụng 4. Thay đổi người sử dụng tuỳ chọn của công cụ tìm kiếm (tìm kiếm tên, các thông số tìm kiếm, và như vậy) để sửa đổi các thiết lập của tài liệu lấy. 5. Cam kết thay đổi. Tìm kiếm được gửi đến máy chủ. Từ thời điểm này vào kịch bản này sau một trong những trước. | 504 The Personal Portfolio Application 4. User changes search preferences search name search parameters and so on to modify the set of retrieved documents. 5. User commits the changes. The search is submitted to the server. From this point on this scenario follows the preceding one. In a real-world use case document more refined scenarios would follow. A refined use case diagram After further interviews with end users and more analysis activity the following use case diagram is defined. Figure A refined use case diagram Note that this refined diagram includes a new actor the local operating system OS which is needed to store and view downloaded documents together with a more structured use case organization. This diagram forms the input to the first GUI paper mock-up prototype. The next step in following an RUP methodology is to elicit the actors-system boundary classes. Choosing a technology 505 Individuating boundary classes Boundary classes are those classes that lie at the boundary between the system and the external actors. Using the concept of a personal portfolio of documents and studying the previous scenarios from the viewpoint of the end user actor we could think of the main boundary class as a collection of search objects search objects gather retrieved documents from the remote repository and users will mainly deal with a collection of searches. After initial interviews a partial conceptual model of the application domain is nailed down as shown in Figure . Figure An initial conceptual class diagram The class diagram in Figure is related to the conceptual domain only and shouldn t be confused with the implementation class diagram that we will consider in a later section. Before proceeding to the design we need to make some basic choices about the underlying technology. Clearly our design will be radically affected by this strategic choice. Choosing a technology The choice of a suitable implementation technology is basically .