Structure Of Design Patterns Research Articles

Оцінка використання шаблонів проектування програмного забезпечення

The subject of study in the article is software development processes using design patterns. The aim is to improve the quality of modern software development projects through the use of experience and knowledge, to build software subsystems that are focused on infrastructure and work with an external client. Objectives: to review the methodology, programming paradigms and the possibility of their application at the design and coding stages of the software development life cycle; development of the concept of using design patterns in software design as knowledge available for reuse, propose an approach to the practical implementation of design patterns to node.js projects. The models used are the Composite design pattern, the Chain of responsibility design pattern. The used methodologies are object-oriented programming, as the most common programming paradigm, a unified modeling language UML for displaying the structure of design patterns. The following results are obtained. Modern methodologies and design paradigms are considered, a classification is formed in the form of a tree structure with a division into declarative and imperative subspecies, it is concluded that within the framework of the study we will use an object-oriented methodology as the most common design paradigm. An example of building an information system of the node.js project is considered. Analyzed the main errors that arise when developing and writing code for working with an external client. The elements of the node.js project and the concepts of structuring their relationship with existing design patterns are considered. An example of a practical implementation of a node.js project and its relationship with the Composite and Chain of responsibility design patterns is considered. In this connection, the work provides the structure of these templates. Findings. The scientific novelty of the results obtained is as follows: the model of design patterns was further developed through their use in the concept of building a node.js application, which makes it possible to improve the quality of interaction between the project team and reduce its execution time.

A Design Pattern Structure Specification to Extract Statistical Report

Design patterns are ecological abstract documents which offer acceptable solutions for the continual issues. It allows developers to communicate in a well-known way with the system design. This paper reviewing set of research articles to know the current trend on design pattern’s applications. This research also introduces the structure of a new pattern that acts as data analyzer of any software given as input. This pattern acts as centralized data storage of concrete class objects. The instances are analyzed by various functionalities of analyzer in-order to derive results. It helps to solve some of the day to day problems faced by the software designer. This pattern provides services for a group of concrete members to design set of functionalities in order to support data analytics. The structure and its applicability on software are examined, using a case study.

UML Extension for Defining the Interaction Variants of Design Patterns

Design patterns provide a way to transfer design knowledge and reusable solutions to recurring problems. The patterns include structural and interaction information that, if captured in a catalog, can act as a useful reference guide for developers when making design decisions. However, for the same design pattern structure, there can be different ways for interactions to occur. We call these interaction variants, and they haven't yet been defined explicitly in existing work. This article introduces an approach to define the interaction variants that exist in design patterns as extensions to UML sequence diagrams. The authors have applied the approach on several commonly used patterns. The approach has proved useful for paving the way toward support for cataloging design pattern interactions and interaction variants in a visual modeling tool to be used during software design.

레퍼런스 흐름에 기반한 디자인 패턴의 확장 지점 식별

Sometimes it is not sufficient to identify design pattern instances for extension of software, because the extension points exist outside of the instances. We define reference flows, which is a process of composing an intrinsic structure of design patterns, and suggest an analysis method based on reference flows for identifying the extension points.