Automatic Code Generation Using Uml To Xml Schema Transformation

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1 Automatic Code Generation Using Uml To Xml Schema Transformation Anshul 1, Sompal 2, Vikas Sheoran 3 ¹CSE Department, MDU Rohtak, India ²CSE Department, MBU Solan, India 3 CIVIL Department, MBU Solan, India ABSTRACT: The emergence of Unified Modeling Language (UML) as a standard for modeling systems has encouraged the use of automated software tools that facilitate the development process from analysis through coding. An effort has been made to find methods to automatically generate executable code from the UML class diagrams. An object oriented approach has been proposed to generate executable implementation code from UML class diagrams in an object-oriented programming language. In our approach UML class diagram is used to generate XML schema and generated xml schema is used for code generation. We have implemented a system for XML Schema generation using.net platform..net is helpful in fastly generating the tool. A tool named JIBX is used for code generation which is developed by IBM and also a open source tool. KEYWORDS: UML, SDLC(Software Development Life Cycle ),XML,OMT,OMG(Object Management Group) I. INTRODUCTION The main aim of this project is to reduce efforts of development team by generating code from the UML diagram. UML diagram are made just after the Specification phase in the design and analysis phase. UML diagram contain all the details of the application. Once the design and analysis phase is completed we start with coding which is the most time consuming phase. So to reduce development efforts and time we have proposed this approach. In propose solution we have generated a tool which will convert UML diagram to XML Schema which is a standard for information interchange. This generated XML Schema is used code generation using tool JiBX. II. OBJECTIVES The final goal of this research is to automatically generate implementation code from the UML class diagrams. The general objectives are: Anshul,Sompal,Vikas Page 117

2 1. To find an approach to generate implementation code from UML class in an object-oriented programming language such as Java. 2. To implement the proposed approach and develop a system for automatic Java code generation from UML class. Our code generation approach and tool will help in bridging the gap between the design and development phase and will support the developers in the software development process. III. Methodology Generally it is difficult to develop a project without design and analysis phase. Design and analysis phase define the structure of the application or project. It defines both the static and dynamic aspect of the application. After the design and analysis most difficult and time consuming phase of software development comes. To reduce the difficulty and the time span we are proposing a solution of effort reduction by automatic code generation. START READ UML DIAGRAM CODIFY UML UML DIAGRAM TO TEXT APPLY MAPPING RULES FOR UML TO XSD TRANSFORMATION APPLY XSD FILE TO JIBX TO FOR JAVA CODE GENERATION STOP Fig 1.1 Flowchart of proposed solution Anshul,Sompal,Vikas Page 118

3 IV. RESULTS AND ANALYSIS The results for the effort reduction by automatic code generation. UML to XML Schema transformation is used for automatic code generation. Generated XML Schema is a intermediate form for models proposed in the dissertation. Analysis shows that effort is reduced by the proposed model. Effort reduced is in terms of development time and human efforts. Case we consider in this dissertation is UML Diagram of a Publication. Associations exist between Bibliography and Publication class. There are three more classes that are Online Publication, Conference Paper and Books. These three classes inherit Publication class. In this example we have two type of relationship one is association and other is generalization. Publication class has following attributes: Title -String Type Author String Type Year_Published Date Type Bibliography class has following attributes: Book_Attr Object of Class Book ConferencePaper_Attr - Object of Class ConferencePaper OnlinePublication_Attr - Object of Class OnlinePublication OnlinePublication class has following attributes: URL String Type ConferencePaper class has following attributes: Conference_Title String Type Conference_Place String Type Conference_Date Date Type Anshul,Sompal,Vikas Page 119

4 Book class has following attributes: Publisher_Name -String Type Place_Published -String Type Fig 1.2 Biblography Example UML class diagram in graphical form is not used as the input instead it has been converted into text form which is easy to read Fig 1.3 UML Texts Anshul,Sompal,Vikas Page 120

5 A. Tool developed for Text UML to XSD file: We are using XSD as intermediate for the code generation purpose. For transforming UML to XSD a tool UML to XSD convertor has been developed. UML to xml convertor has been developed using.net technology with C# language. It take UML text as input and return XSD as output. Fig 1.4 UML to XSD convertor Fig 1.5 Jibx Output screen Anshul,Sompal,Vikas Page 121

6 V. CONCLUSION In this work, we have presented a new approach that produces automatically code from UML class diagram with XML Schema transformation. We have converted UML diagram to text UML and this UML text is converted to XML schema through a tool which is developed by us. We have implemented this approach through a prototype. Then this generated XML Schema is used for java code generation using JiBX. This automatic code generation can reduce efforts and development time by reducing coding efforts. Our approach is an object-oriented approach and in the present study we have used Java as the target language. However our approach is general so it can be used to generate the low level code in other object-oriented languages. Future work can also be extended to following fields: Standard specifications for the reverse engineering XML schemas to UML models. Developing a GUI based tool to better represent and map UML models. Work on identifying mapping specifications for multiple inheritance (generalization) and multilevel inheritance in UML REFERENCES [1.] Noreddine GHERABI, Mohamed BAHAJ. Robust Representation for Conversion UML Class into XML Document using DOM. International Journal of Computer Applications ( ) Volume 33 No.9, November 2011 [2.] Jakimi, M. El Koutbi. An Object-Oriented Approach to UML Scenarios Engineering and Code Generation. International Journal of Computer Theory and Engineering, Vol. 1, No. 1, April 2009, [3.] Grant, E. S., Chennamaneni, R. and Reza, H.: Towards Analyzing UML Class Diagram Models to Object- Relational Database Systems Transformations. In Databases and Applications, pp. 129{134, [4.] David Carlson. UML2 Profile for XML Schema Generation July 24, 2006 Anshul,Sompal,Vikas Page 122

7 [5.] Choi Mun-Young, Jongseon Lim, Joo Kyung-Soo. Developing An Xml Schema Generator Based On Uml Class Proceedings of the Fourth International Conference on Machine Learning and Cybernetics, Guangzhou, August 2005 [6.] Eladio Dom ınguez, Jorge Lloret, Ange L. Rubio, and Marıa A. Zapata. Evolving XML Schemas and Documents Using UML Class Diagrams. Springer-Verlag Berlin Heidelberg 2005 [7.] Iftikhar Azim Niaz and Jiro Tanaka, An Object-Oriented Approach To Generate Java Code From UML Statecharts, International Journal of Computer & Information Science, Vol. 6, No. 2, June 2005 Anshul,Sompal,Vikas Page 123