| UML models are semifinished software product of the early phase. Although they are not finished software product, yet their quality has a great influence on the following products, such as source code. So research on UML models quality metrics is always a hotspot in the world. Software metrics is effective quantitative analysis technique to control software quality. UML models metrics can improve software quality and save development cost. However, in practice most of software metric tools are based on source code, and less are base on UML models. And some UML-based software metric tools are based on the specifical modeling tool's scripting language. In order to resolve current problems, the dissertation adopts XML-based metadata interchange (XMI) technique to design and implement a UML-based software metric tool.Firstly, the dissertation systematically generalizes the research on UML models quality metrics and improves traditional quality model and quality metrics model considering UML models metrics'characteristics. Secondly, the dissertation investigates information interchange on UML models, depicts UML meta-model theory and XMI. Thirdly, a UML-based software metric tool, capable of customizing the metrics, is implemented based on the knowledge of XMI and UML models metrics. Lastly, through a case of a library management system, this metric tool is demonstrated how to be applied in practice. |
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