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- Measuring the understandability of WSDL specifications, web service understanding degree approach and systemPublication . Berón, Mario; Bernardis, Hernán; Miranda, Enrique; Riesco, Daniel; Pereira, Maria João; Henriques, Pedro RangelWeb Services (WS) are fundamental software artifacts for building service oriented applications and they are usually reused by others. Therefore they must be analyzed and comprehended for maintenance tasks: identification of critical parts, bug fixing, adaptation and improvement. In this article, WSDLUD a method aimed at measuring a priori the understanding degree (UD) of WSDL (Web Service Description Language) descriptions is presented. In order to compute UD several criteria useful to measure the understanding’s complexity of WSDL descriptions must be defined. These criteria are used by LSP (Logic Scoring of Preference), a multicriteria evaluation method, for producing a Global Preference value that indicates the satisfaction level of the WSDL description regarding the evaluation focus, in this case, the understanding degree. All the criteria information required by LSP is extracted from WSDL descriptions by using static analysis techniques and processed by specific algorithms which allow gathering semantic information. This process allows to obtain a priori information about the comprehension difficulty which proves our research hypotheses that states that it is possible to compute the understanding degree of a WSDL description.
- NESSy: a new evaluator for software development toolsPublication . Miranda, Enrique; Berón, Mario; Montejano, Germán; Pereira, Maria João; Henriques, Pedro RangelSelect the best tool for developing a system is a complex process. There must be considered several aspects corresponding to the domain where the system is going to run. Generally, the domain characteristics only are comprehended by experts. They know very well which are the main characteristics, how they can be combined and which should not be considered. This knowledge is fundamental to select the most appropriate tool for implementing a system that solves problems or automates processes in a specific domain. For this reason, it is difficult to get a tool that allows to establish a ranking of development tools for a particular case. In this paper, NESSy, a system to evaluate software development tools, is presented. This tool implements a multi-criteria evaluation method named LSP (Logic Scoring of Preference). Furthermore, it presents a user-friendly environment for carrying out the evaluation process. LSP uses a set of structures aimed at describing software development tools with the goal of select the best one for a specific problem. The features previously mentioned make NESSy a relevant application to help the software engineer to select the best tool for solving specific problems related to particular domains.
- Cálculo de métricas para medir el grado de entendimiento de una descripción WSDLPublication . Bernardis, Hernán; Bernardis, Edgardo; Berón, Mario; Riesco, Daniel; Henriques, Pedro Rangel; Pereira, Maria JoãoEn la actualidad, existe un gran incremento en el desarrollo de Web Services. Cada vez más organizaciones crean servicios web y los publican en la red con el objetivo de que otras organizaciones o personas los utilicen para construir diferentes sistemas de software. Esta tendencia ha generado que la Ingeniería de Software se dedique en los últimos años a especificar su uso definiendo estándares y herramientas que faciliten la tarea de definición, construcción, implementación y uso de los mismos. Como resultado, actualmente existen estándares aceptados a nivel mundial que especifican el uso de los mismos. Aprovechándose de estos estándares altamente abstractos y formales en su definición, ha sido posible definir herramientas que permiten construir servicios Web de manera casi automática. Sin embargo, esta alta estandarización ha provocado que la comprensión de los Web Services (WS) sea cada vez más difícil y tediosa. Comprensión que se vuelve fundamental a la hora de determinar de una gran cantidad de Web Services, cuál usar, para realizar tareas de mantenimiento sobre un Web Services o sobre un sistema que invoca múltiples Web Services. En este artículo se describe una línea de investigación centrada en facilitar la comprensión de Servicios Web mediante el análisis de sus especificaciones WSDL. Análisis que utiliza diferentes estrategias para calcular métricas que permiten determinar cualitativa y cuantitativamente la dificultad de comprensión que presenta un WS.
- WSDLUD: a metric to measure the understanding degree of WSDL descriptionsPublication . Berón, Mario; Bernardis, Hernán; Miranda, Enrique; Riesco, Daniel; Pereira, Maria João; Henriques, Pedro RangelIn this article, WSDL Understanding Degree (WSDLUD) a metric aimed at measuring a priori the understandability of WSDL (Web Services Description Language) descriptions is presented. In order to compute WSDLUD, all the static information available in a WSDL description is collected. This information is submitted to an evaluation process based on a method named LSP (Logic Scoring of Preference). This evaluation process outputs a Global Preference value that indicates the satisfaction level of the WSDL description regarding the evaluation focus, in this case, the understanding degree.