- 中都有關(guān)于值對象模式
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value object pattern中文什么意思
例句與用法
- At the same time j2ee platform technologies are discussed deeply , such as j2ee platform technologies , communication technologies , ejb component technologies and so on . the design model based on the mvc frame is applied in the system development , so that the separation between the present logic and the business logic in the application is realized . finally , according to the problems found in the development process , the paper explains particularly the kay technologies in the realization : the uniform naming service is realized by realizing the service locator partten using the value object pattern , all the status data is encapsulated into a serializable object , then transferred among the client , sessionbean and entitybean in order to decrease the potential network traffic caused by reference of entitybean ; in order to improve the performance of data storing and taking , we introduce the facade model to escapsulate the ejbs which delegate the data model
本論文結(jié)合了杭州市財(cái)政局的會計(jì)人員從業(yè)資格管理系統(tǒng)的升級項(xiàng)目，研究了基于j2ee的ejb組件模型的多層分布式體系結(jié)構(gòu)的設(shè)計(jì)與實(shí)現(xiàn)：深入探討了三種分布式處理技術(shù)( rmi ， corba ， com )的區(qū)別，將j2ee平臺的ejb技術(shù)與windowsdna體系的com +技術(shù)從多個角度進(jìn)行了比較；詳細(xì)闡述了在系統(tǒng)開發(fā)過程中j2ee平臺的幾項(xiàng)核心技術(shù)(如： j2ee平臺的服務(wù)技術(shù)、通信技術(shù)、 ejb組件技術(shù)等)的應(yīng)用；引入了源于mvc三部件框架的設(shè)計(jì)模式，實(shí)現(xiàn)了應(yīng)用中表現(xiàn)邏輯與業(yè)務(wù)邏輯的分離；最后，結(jié)合在開發(fā)過程中遇到的問題，詳細(xì)解釋了開發(fā)過程中實(shí)現(xiàn)的關(guān)鍵點(diǎn)：用servicelocator模式實(shí)現(xiàn)了統(tǒng)一的命名服務(wù)管理；運(yùn)用valueobject模式將所有狀態(tài)數(shù)據(jù)包裝成一個可序列化對象vo ，然后在客戶機(jī)、 sessionbean與entitybean之間傳遞，減少了使用實(shí)體bean造成的潛在網(wǎng)絡(luò)通信量；以及引入sessionfacade模式，用sessionbean封裝了entitybean ，改善了數(shù)據(jù)存取的性能。