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An Approach for Construction and Reuse of Software Components Frameworks implemented in Delphi

Authors:
João Luís Cardoso de Moraes at Federal University of São Carlos
João Luís Cardoso de Moraes
Adriano A Bossonaro
Adriano A Bossonaro
Adriano A Bossonaro
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Vinicius Cardoso Garcia at Federal University of Pernambuco
Vinicius Cardoso Garcia
Valdirene Fontanette at Federal University of São Carlos
Valdirene Fontanette
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Abstract and Figures

This paper presents an approach for construction and reuse of software components frameworks implemented in Delphi. The main mechanisms of execution that assist the Software Engineer in the approach are: MVCASE tool, the Transformation System Draco-PUC, and the Delphi environment. The approach uses techniques of CBD, Framework and component-oriented language In the software development, the reuse is characterized for the use of software products, in a different situation of that one for which these products originally had been constructed. The Component-Based Development(CBD) if worries about the creation of components that can be reused in other applications. Research has explored different technologies, including the use of CASE tools(Computer-Aided Engineering Software), software components, domain engineering, frameworks, patterns, Software Transformation Systems and programming languages, oriented objects, to get software of better quality and with lesser cost. Motivated for the ideas of construction and reuse of software components, through the use of several techniques that they aim at to reuse to the maximum the work of analysis, design and concluded implementation already, and for the development based on components, this paper considers an approach for the construction and reuse of components frameworks implemented in a component- oriented language, that it looks in such a way to guide the software engineer in the components development problem domain , how much in the applications development that they reuse. To support the construction and reuse of frameworks, different technologies are used:
summarizes, in Diagram SADT (Structured Analysis and Design Technique) [6], the approach proposal, that has left of knowledge study of a problem domain and produces different devices of software: Components Framework problem domain with the respective documentation, and the Design and Implementations domain applications that reuse the Components Framework. The main mechanisms of execution that assist the Software Engineer in the approach proposal are: MVCASE tool, the Transformation System Draco-PUC, and the Delphi environment. The approach uses techniques of CBD, Framework and of oriented-component languages. One expects with this approach , to contribute to improve the Software Development Process (SDP), mainly increasing the degree software reuse and facilitating its maintenance. In reuse it prevents it the redundancy and improves the security encapsulating in the components great code part of the domain applications. The approach proposal is divided in two stages:-Construct Framework e-Reuse Framework, as it shows Fig 3. In a first stage, To construct framework, has been broken of the study of problem domain knowledge and gets the Components Framework. The Components Framework will count to the Components Models and Implementations. In one second stage the applications of the problem domain are developed, making reuse of the Components Framework.
summarizes, in Diagram SADT (Structured Analysis and Design Technique) [6], the approach proposal, that has left of knowledge study of a problem domain and produces different devices of software: Components Framework problem domain with the respective documentation, and the Design and Implementations domain applications that reuse the Components Framework. The main mechanisms of execution that assist the Software Engineer in the approach proposal are: MVCASE tool, the Transformation System Draco-PUC, and the Delphi environment. The approach uses techniques of CBD, Framework and of oriented-component languages. One expects with this approach , to contribute to improve the Software Development Process (SDP), mainly increasing the degree software reuse and facilitating its maintenance. In reuse it prevents it the redundancy and improves the security encapsulating in the components great code part of the domain applications. The approach proposal is divided in two stages:-Construct Framework e-Reuse Framework, as it shows Fig 3. In a first stage, To construct framework, has been broken of the study of problem domain knowledge and gets the Components Framework. The Components Framework will count to the Components Models and Implementations. In one second stage the applications of the problem domain are developed, making reuse of the Components Framework.
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Class Model-FrameCardio Next step becomes Framework Code Generation in oriented-object language. It was adopted ObjectPascal Language, of Delphi. The Transformation System (TS) Draco-PUC is used To generate Codes of components from its models. So that if it has an idea of as transformations constructed in the Draco-PUC act, Fig 5 shows the Classes_ModeloLogico Transformer, that recognizes the specification of class in UML, described in MDL, the control point LHS and generates the corresponding ObjectPascal code, as the standard of substitution specified in control point RHS.
Class Model-FrameCardio Next step becomes Framework Code Generation in oriented-object language. It was adopted ObjectPascal Language, of Delphi. The Transformation System (TS) Draco-PUC is used To generate Codes of components from its models. So that if it has an idea of as transformations constructed in the Draco-PUC act, Fig 5 shows the Classes_ModeloLogico Transformer, that recognizes the specification of class in UML, described in MDL, the control point LHS and generates the corresponding ObjectPascal code, as the standard of substitution specified in control point RHS.
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Generated Code
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Desenvolvimento de um Framework, baseado em componentes, do domínio de Cardiologia
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Resumo -Este artigo apresenta um Processo de Desenvolvimento de um Framework, baseado em componentes, do domínio de Cardiologia. O Framework, denominado FrameCardio, foi desenvolvido em 4 passos: Definição do Domínio do Problema, Especificação dos Componentes, Projeto Interno dos Componentes e Implementação dos Componentes. Das experiências com o sistema, atualmente implantado no Instituto do Coração de Marília (ICM), definiram-se a terminologia do domínio do problema, os processos de negócio, os papéis do atores e as colaborações que mostram o comportamento de grupo de objetos. Toda modelagem foi suportada por uma ferramenta CASE e no passo Implementação dos Componentes foi gerado o código dos componentes na linguagem ObjectPascal, usando um Sistema Transformacional. O FrameCardio foi estruturado em camadas e organizado em pacotes de componentes, disponíveis na ferramenta CASE, para serem reutilizados pelas aplicações. A reutilização evita a redundância de código e reduz os custos e o tempo de desenvolvimento. Da mesma forma que no desenvolvimento do FrameCardio, utiliza-se o Sistema de Transformação para geração do código ObjectPascal das aplicações. Uma aplicação do Domínio de Cardiologia é apresentada para mostrar a reutilização de componentes do Framework. Abstract -This paper presents a Process of Development of a Framework, based on components, of the domain of Cardiology. Framework, denominated FrameCardio, it was developed in 4 steps: Definition of the Domain of the Problem, Specification of the Components, Internal Project of the Components and Implementation of the Components. Of the experiences with the system, now implanted at the Institute of the Heart of Marília (ICM), they were defined the terminology of the domain of the problem, the business processes, the actors papers and the collaborations that they show the behavior of group of objects. Every modelling was supported by a tool CASE and in the step Implementation of the Components the code of the components was generated in the language ObjectPascal, using a System of Transformation. FrameCardio was structured in layers and organized in packages of components, available in the t ool CASE, for they be reused by the applications. The reuse avoids the code redundancy and it reduces the costs and the time of development. In the same way that in the development of FrameCardio, the System of Transformation is used for generation of the code ObjectPascal of the applications. An application of the Domain of Cardiology is presented to show the reuse of components of Framework.
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Automática de Código Delphi a partir de Especificações em Catalysis. XXVII Conferência Latino Americano de Informática -CLEI
  • Jan 2001
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Moraes, J. L. C., Prado, A. F. Geração Automática de Código Delphi a partir de Especificações em Catalysis. XXVII Conferência Latino Americano de Informática -CLEI'2001. ISBN: 980-11-0527-5. Mérida, México. 24-28 de Setembro, 2001.
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Java Technologies. Disponível site Sun Microsystems, URL: http://java.sun.com/products. Consultado em 07/09/2003.
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Krueger, C. Software Reuse, ACM Computing Surveys, vol. 24, no 2, Junho 1992, pp. 131- 183.
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Krueger, C. Software Reuse, ACM Computing Surveys, vol. 24, no 2, Junho 1992, pp. 131-183.