scholarly journals Database Access Layer Code Generation Directly from Use Case Scenarios

2021 ◽  
Vol 15 ◽  
pp. 41-62
Author(s):  
Nassima Yamouni-Khelifi ◽  
Kaddour Sadouni ◽  
Michał Śmiałek ◽  
Mahmoud Zennaki
Keyword(s):  
Code Generation ◽  
Use Case ◽  
Database Access ◽  
Requirements Definition ◽  
Model Driven ◽  
Use Case Models ◽  
System Requirements ◽  
Final Code ◽  
And Storage ◽  
Java Code

Requirements definition is the first step in the life cycle of a software system. Requirements are formulated as paragraphs of text and appear ambiguous, so they cannot be translated directly into code. For this reason, they are treated as secondary artifacts for software developers. This paper presents a model-driven based approach where requirements are treated as first-class citizens, and can contribute to the final code. In this approach, requirements are formulated as use case models with their textual scenarios, using a precise requirements language called RSL, allowing an automatic transition to executable Java code. The structure of the generated code follows the Model-View-Presenter (MVP) architectural pattern. The work focuses on the Model layer code, which is responsible for the persistence and storage of data in a database system.

Component-Based Modeling for Information Systems Reengineering

2014 ◽  
pp. 220-234
Author(s):  
Malleswara Talla ◽  
Raul Valverde
Keyword(s):  
Information System ◽  
Legacy Systems ◽  
Use Case ◽  
User Perspective ◽  
Requirements Definition ◽  
Systems Perspective ◽  
Control Framework ◽  
Use Case Models ◽  
Model View ◽  
Definition Phase

An Information System can be envisioned as a set of interdependent components that provide the intended services. The component based modeling serves as a tool for collecting requirements of an Information System in user perspective and business perspective at various stages of software development. The chapter presents a methodology for component based modeling and development of an Information System, starting from the requirements definition phase, arriving at candidate components and creation of final components and their interfaces. The methodology aims at clarifying the intricate details and usage of an Information System via business type models and use-case models. The chapter presents the interaction diagrams in order to describe interactions among objects in systems perspective, and context diagrams for reflecting upon the business domain. Finally, the chapter proposes component replacement as a methodology for system reengineering, and model-view-control framework for component refinement and evolution in order to achieve a reengineered information system that reflects upon current requirements in business domain. The reengineering techniques proposed in this chapter can be applied to legacy systems to turn them into a component-oriented reengineered system.

scholarly journals Extracting SBVR Business Vocabularies from UML Use Case Models Using M2M Transformations Based on Drag-and-Drop Actions

2021 ◽  
Vol 11 (14) ◽  
pp. 6464
Author(s):  
Tomas Skersys ◽  
Paulius Danenas ◽  
Rimantas Butleris ◽  
Armantas Ostreika ◽  
Jonas Ceponis
Keyword(s):  
Development Process ◽  
System Analysis ◽  
System Development ◽  
Model Development ◽  
Use Case ◽  
Model Driven ◽  
Use Case Models ◽  
New Development ◽  
Relevant Topic ◽  
Drag And Drop

In the domain of model-driven system engineering, model-to-model (M2M) transformations present a very relevant topic because they may provide much-needed automation capabilities to the whole CASE-supported system development life cycle. Nonetheless, it is observed that throughout the whole development process M2M transformations are spread unevenly; in this respect, the phases of Business Modeling and System Analysis are arguably the most underdeveloped ones. The main novelty and contributions of this paper are the presented set of model-based transformations for extracting well-structured SBVR business vocabularies from visual UML use case models, which utilizes M2M transformation technology based on the so-called drag-and-drop actions. The conducted experiments show that this new development provides the same transformation power while introducing more flexibility to the model development process as compared to our previously developed approach for (semi-)automatic extraction of SBVR business vocabularies from UML use case models.

Component-Based Modeling for Information Systems Reengineering

2012 ◽  
pp. 65-80
Author(s):  
Malleswara Talla ◽  
Raul Valverde
Keyword(s):  
Information System ◽  
Legacy Systems ◽  
Use Case ◽  
User Perspective ◽  
Requirements Definition ◽  
Systems Perspective ◽  
Control Framework ◽  
Use Case Models ◽  
Model View ◽  
Definition Phase

An Information System can be envisioned as a set of interdependent components that provide the intended services. The component based modeling serves as a tool for collecting requirements of an Information System in user perspective and business perspective at various stages of software development. The chapter presents a methodology for component based modeling and development of an Information System, starting from the requirements definition phase, arriving at candidate components and creation of final components and their interfaces. The methodology aims at clarifying the intricate details and usage of an Information System via business type models and use-case models. The chapter presents the interaction diagrams in order to describe interactions among objects in systems perspective, and context diagrams for reflecting upon the business domain. Finally, the chapter proposes component replacement as a methodology for system reengineering, and model-view-control framework for component refinement and evolution in order to achieve a reengineered information system that reflects upon current requirements in business domain. The reengineering techniques proposed in this chapter can be applied to legacy systems to turn them into a component-oriented reengineered system.

scholarly journals Design of Accented Character-based CAPTCHA with Usability Test for Online Transactions

2017 ◽  
Vol 1 (1) ◽  
pp. 20-24
Author(s):  
O. T. Olanrewaju ◽  
O. Osunade
Keyword(s):  
Code Generation ◽  
Human Identity ◽  
Database Access ◽  
Online Transactions ◽  
Security Breaches ◽  
User Acceptability ◽  
Authentication System ◽  
Compromised Systems ◽  
And Storage ◽  
Mathematical Operations

Websites serve as the primary interface on the Internet for transactions such as subscription, downloads, database access and storage. Websites are however, sources of security breaches to information systems that are attached to them. Several techniques have been developed to provide security on websites such as secured socket layer (ssl) and CAPTCHA systems. CAPTCHA is an authentication system for verifying human identity during online transactions. Text, mathematical operations, images and audio have been used to develop CAPTCHA systems. The basis of each system has been limited thus leading to successful attacks and compromised systems. In this work, the aim is to integrate accented characters into the CAPTCHA code generation mechanism and test the usability of the developed system on a website. The results indicate successful generation and user acceptability.

scholarly journals Model-driven Java code refactoring

2015 ◽  
Vol 12 (2) ◽  
pp. 375-403 ◽  
Author(s):  
Sohaib Hamioud ◽  
Fadila Atil
Keyword(s):  
Code Generation ◽  
Tool Support ◽  
Formal Specifications ◽  
Tool Development ◽  
Modeling Framework ◽  
Model Driven ◽  
Code Refactoring ◽  
Automated Support ◽  
Model Driven Approach ◽  
Java Code

Refactoring is an important technique for restructuring code to improve its design and increase programmer productivity and code reuse. Performing refactorings manually, however, is tedious, time consuming and error-prone. Thus, providing an automated support for them is necessary. Unfortunately even in our days, such automation is still not easily achieved and requires formal specifications of the refactoring process. Moreover, extensibility and tool development automation are factors that should be taken into consideration when designing and implementing automated refactorings. In this paper, we introduce a model-driven approach where refactoring features, such as code representation, analysis and transformation adopt models as first-class artifacts. We aim at exploring the value of model transformation and code generation when formalizing refactorings and developing tool support. The presented approach is applied to the refactoring of Java code using a prototypical implementation based on the Eclipse Modeling Framework, a language workbench, a Java metamodel and a set of OMG standards.

scholarly journals Model-driven acceptance test automation based on use cases

2015 ◽  
Vol 12 (2) ◽  
pp. 707-728 ◽  
Author(s):  
Tomasz Straszak ◽  
Michał Śmiałek
Keyword(s):  
Specification Language ◽  
Acceptance Testing ◽  
Functional Domain ◽  
Test Cases ◽  
Acceptance Test ◽  
Test Automation ◽  
Model Driven ◽  
Use Case Models ◽  
Model Driven Approach ◽  
Requirements Models

Acceptance testing is highly dependent on the formulation of requirements, as the final system is tested against user requirements. It is thus highly desirable to be able to automate transition from requirements to acceptance tests. In this paper we present a model-driven approach to this issue, where detailed use case models are transformed into test cases. Importantly, our approach facilitates synchronising functional test cases with other types of tests (non-functional, domain logic, user interface) and introducing test data. This leads to a unified approach where requirements models of various kind drive the acceptance testing process. This process is parallel to the development process which also involves automatic transformations from requirements models to software development artefacts (models and code). To show validity of the approach we present a case study which uses a new tool called ReDSeT, that transforms requirements formulated in the Requirements Specification Language (RSL) into tests in a newly proposed Test Specification Language (TSL).

scholarly journals Model-Driven Approach to develop Rich Web Applications

2018 ◽  
Vol 21 (2) ◽  
Author(s):  
Guido Nuñez ◽  
Daniel Bonhaure ◽  
Magalí González ◽  
Nathalie Aquino ◽  
Luca Cernuzzi
Keyword(s):  
Code Generation ◽  
Web Application ◽  
Web Applications ◽  
Application Development ◽  
Internet Applications ◽  
Architecture Model ◽  
Model Driven ◽  
Rich Internet Applications ◽  
Preliminary Validation ◽  
Model Driven Approach

Many Web applications have among their features the possibility of distributing their data and their business logic between the client and the server, also allowing an asynchronous communication between them. These features, originally associated with the arrival of Rich Internet Applications (RIA), remain particularly relevant and desirable. In the area of RIA, there are few proposals that simultaneously consider these features, adopt Model-Driven Development (MDD), and use implementation technologies based on scripting. In this work, we start from MoWebA, an MDD approach to web application development, and we extend it by defining a specific architecture model with RIA functionalities, supporting the previously mentioned features. We have defined the necessary metamodels and UML profiles, as well as transformation rules that allow you to generate code based on HTML5, Javascript, jQuery, jQuery Datatables and jQuery UI. The preliminary validation of the proposal shows positive evidences regarding the effectiveness, efficiency and satisfaction of the users with respect to the modeling and code generation processes of the proposal.

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