系統設計階段的主要目的是將系統分析模型轉換成足以規範實作人員進行程式撰寫的設計模型，以提昇系統效能及再用效益。並且讓設計結果符合非功能需求、實作環境以及效能需求等限制。其重心應放在將系統的設計最佳化，並確保設計模型已涵蓋全部的需求。但對於物件導向程式設計經驗較為不足的開發人員而言，這樣的過程不但費時費力，而且往往浪費資源於解決已有標準解答的問題。若是能將設計樣式的概念融入元件式系統的設計過程中，將可導引系統設計人員快速的將前人所累積的物件導向程式設計經驗應用於開發中元件式系統的設計上，避免無謂的資源浪費。本研究將以Gamma等四位學者所提出的二十三個設計樣式為基礎，發展一套設計樣式導入流程。並以一雛型系統為例，說明系統設計者如何在進行元件式系統設計時，以本研究提供的設計樣式導入流程，將設計樣式逐步導入開發中系統，藉此縮短系統開發時程、提升系統功能擴充性和元件再用性、降低日後維護系統的困難度，並可在系統開發過程中，對所有曾採用的設計樣式進行記錄，做為專案管理以及日後開發類似系統的重要參考。 / The primary purpose of system design phase is to transform the analysis model into the design model which is definite enough to generate programming code. Besides, the result of design should satisfy the nonfunctional requirement, implementation environment and efficiency requirement. The focus should be on the optimization of design to ensure the design model satisfying all kinds of requirements. However, the inexperienced object-oriented system designers usually spend a lot of time and energy to solve problems which already have standard answers. The concept of design patterns can be used in the design phase to guide system designers to apply the accumulated object-oriented programming experience to avoid wasting resources. This research intends to establish a systematic approach for applying the design patterns to the component-based system development process. This approach is based on the most popular twenty-three design patterns provided by Gamma et al. A prototype is also established to demonstrate the step by step process in adopting the design patterns during the component-based system development process. The proposed approach should increase the software reusability and maintenance, as well as reduce the developing schedule and cost. Furthermore, the systematic approach of adopting the design patterns can be incorporated into the project management guidelines as the important reference for future system development.
| Identifer | oai:union.ndltd.org:CHENGCHI/G0090356019 |
| Creators | 俞君翰 |
| Publisher | 國立政治大學 |
| Source Sets | National Chengchi University Libraries |
| Language | 中文 |
| Detected Language | English |
| Type | text |
| Rights | Copyright © nccu library on behalf of the copyright holders |
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