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Twenty years of object-relational mapping: A survey on patterns, solutions, and their implications on application design

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INFORMATION AND SOFTWARE TECHNOLOGY 2017年第Feb.期82卷 1-18页

作者： Torres, Alexandre Galante, Renata Pimenta, Marcelo S. Martins, Alexandre Jonatan B. Univ Fed Rio Grande do Sul Inst Informat Av Bento Goncalves 9500 BR-91501970 Porto Alegre RS Brazil TAGMATEC Rodovia SC-401600ParqTEC AlfaSala 405 BR-88030911 Florianopolis SC Brazil

Context: Almost twenty years after the first release of TopLink for Java, object-Relational Mapping Solutions (ORMS5) are available at every popular development platform, providing useful tools for developers to deal with the impedance mismatch problem. However, no matter how ubiquitous these solutions are, this essential problem remains as challenging as ever. Different solutions, each with a particular vocabulary, are difficult to learn, and make the impedance problem looks deceptively simpler than it really is. objective: The objective of this paper is to identify, discuss, and organize the knowledge concerning ORMS5, helping designers towards making better informed decisions about designing and implementing their models, focusing at the static view of persistence mapping. Method: This paper presents a survey with nine ORMS5, selected from the top ten development platforms in popularity. Each ORMS was assessed, by documentation review and experience, in relation to architectural and structural patterns, selected from literature, and its characteristics and implementation options, including platform specific particularities. Results: We found out that all studied ORMSs followed architectural and structural patterns in the literature, but often with distinct nomenclature, and some singularities. Many decisions, depending on how patterns are implemented and configured, affect how class models should be adapted, in order to create practical mappings to the database. Conclusion: This survey identified what structural patterns each ORMS followed, highlighting major structural decisions a designer must take, and its consequences, in order to turn analysis models into object oriented systems. It also offers a pattern based set of characteristics that developers can use as a baseline to make their own assessments of ORMSs. (C) 2016 Elsevier B.V. All rights reserved.

关键词： object-relational mapping design patterns Impedance mismatch problem Enterprise patterns Class models

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E-Transaction Services for Retail Business Process in IoT using object Analysis and design

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IOP Conference Series: Materials Science and Engineering 2019年第2期662卷

作者： T Hartono F R Ramadhan A Nursikuwagus Department of Information System Universitas Komputer Indonesia Indonesia

The transaction process in business is an important factor that must be maintained for a business increase. This activity can be maintained by computerized. Application of computer which help process business transactions is an important thing that should be provided. This research aims to provide a system that helps routine transaction in daily food sales. Transaction in this system has included activities such as ordering, fulfil orders, payment, recording, financing, and reporting to management. implementation of the system, that have used a prototype system development method. At each stage of the prototype is assisted by object-oriented programming, namely UML (Unified Modelling Language). use of UML diagrams includes use case diagrams, activity diagrams, sequence diagrams, class diagrams, and deployment diagrams. The results of this research are web technology-based transaction systems. The system has included order, delivery of an order, payment, order recording, and financial reporting for management. The system is made for the implementation of five main business processes that help the transaction system. The main business processes, that have created, is consisted of services, order, fulfil orders, financial services, and report for management.

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The design and implementation of object-Constraint Programming

The Design and Implementation of Object-Constraint Programmi...

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作者： Tim Felgentreff Universitat Potsdam

学位级别：博士

Constraints allow developers to specify properties of systems and have those properties be main- tained automatically. This results in compact declarations to describe interactive applications avoid- ing scattered code to check and imperatively re-satisfy invariants in response to user input that perturbs the system. Constraints thus provide flexibility and expressiveness for solving complex problems and maintaining a desired system state. Despite these advantages, constraint program- ming is not yet widespread, with imperative programming still being the norm. There is a long history of research on constraint programming as well as its integration with general purpose programming languages, especially from the imperative paradigm. However, this integration typically does not unify the constructs for encapsulation and abstraction from both paradigms and often leads to a parallel world of constraint code fragments and abstractions inter- mingled with the general purpose code. This impedes re-use of modules, as client code written in one paradigm can only use modules written to support that paradigm - thus, modules require redundant definitions if they are to be used in both paradigms. Furthermore, clear distinction between the paradigms requires developers to learn about and fully understand both paradigms to make use of them. In our work, we have developed a design for a family of object-constraint languages called Ba- belsberg. Our design unifies the constructs for encapsulation and abstraction by using only object- oriented method definitions for both declarative and imperative code. Just like assertions, our constraints are expressed using ordinary imperative expressions, including full objects and message sends. Unlike assertions, however, the system attempts to satisfy them if they are not currently true, and keeps them satisfied throughout the remaining execution. We provide a semantics that guides implementers of our design to combine Babelsberg with existing

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A Python object-oriented framework for the CMS alignment and calibration data 22

A Python object-oriented framework for the CMS alignment and...

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22nd International Conference on Computing in High Energy and Nuclear Physics, CHEP 2016

作者： Dawes, Joshua H. CERN University of Manchester United Kingdom

The Alignment, Calibrations and Databases group at the CMS Experiment delivers Alignment and Calibration Conditions Data to a large set of workflows which process recorded event data and produce simulated events. The current infrastructure for releasing and consuming Conditions Data was designed in the two years of the first LHC long shutdown to respond to use cases from the preceding data-taking period. During the second run of the LHC, new use cases were defined. For the consumption of Conditions Metadata, no common interface existed for the detector experts to use in Python-based custom scripts, resulting in many different querying and transaction management patterns. A new framework has been built to address such use cases: a simple object-oriented tool that detector experts can use to read and write Conditions Metadata when using Oracle and SQLite databases, that provides a homogeneous method of querying across all services. The tool provides mechanisms for segmenting large sets of conditions while releasing them to the production database, allows for uniform error reporting to the client-side from the server-side and optimizes the data transfer to the server. The architecture of the new service has been developed exploiting many of the features made available by the metadata consumption framework to implement the required improvements. This paper presents the details of the design and implementation of the new metadata consumption and data upload framework, as well as analyses of the new upload service's performance as the server-side state varies. © Published under licence by IOP Publishing Ltd.

关键词： Calibration

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implementation of techniques and OWASP security recommendations to avoid SQL and XSS attacks using J2EE and WS-Security

Implementation of techniques and OWASP security recommendati...

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Iberian Conference on Information systems and Technologies (CISTI)

作者： Daniel Guamán Franco Guamán Danilo Jaramillo Manuel Sucunuta Departamento de Ciencias de la Computación y Electrónica Universidad Técnica Particular de Loja Loja Ecuador

ISBN: (纸本)9781509050475

This work contains the implementation of techniques and recommendations OWASP on a SOA prototype developed with J2EE. To its design and coding we used some WS-Security specifications, Metro framework, MVC as architectural pattern, Facade and DAO as design patterns. The prototype was validated in terms of design, coding and security through some tools such as: Structural Analysis for Java, SonarQube, OWASP ZAP, Vega and Wireshark. With the development of this prototype we prove that use of standards, recommendations and techniques for writing secure code in software applications are necessary in order to prevent vulnerabilities; besides, the static analysis supports to identify security breaches and quality aspects that many times are not considered by developers.

关键词： Simple object access protocol Security Service-oriented architecture Java Semiconductor optical amplifiers

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An object-oriented implementation of a parallel Monte Carlo code for radiation transport

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COMPUTER PHYSICS COMMUNICATIONS 2016年 202卷 233-261页

作者： Santos, Pedro Duarte Lani, Andrea Von Karman Inst Fluid Dynam Waterloosesteenweg 72 B-1640 Rhode St Genese Belgium

This paper describes the main features of a state-of-the-art Monte Carlo solver for radiation transport which has been implemented within COOLFluiD, a world-class open source object-oriented platform for scientific simulations. The Monte Carlo code makes use of efficient ray tracing algorithms (for 2D, axisymmetric and 3D arbitrary unstructured meshes) which are described in detail. The solver accuracy is first verified in testcases for which analytical solutions are available, then validated for a space re-entry flight experiment (i.e. FIRE II) for which comparisons against both experiments and reference numerical solutions are provided. Through the flexible design of the physical models, ray tracing and parallelization strategy (fully reusing the mesh decomposition inherited by the fluid simulator), the implementation was made efficient and reusable. Program summary Program title: COOLFIuiD-MC Catalogue identifier: AEZG_v1_0 Program summary URL: http://***/summaries/AEZG_v1_*** Program obtainable from: CPC Program Library, Queen's University, Belfast, N. Ireland Licensing provisions: GNU General Public License, version 3 No. of lines in distributed program, including test data, etc.: 1990165 No. of bytes in distributed program, including test data, etc.: 149533288 Distribution format: *** Programming language: C++. Computer: From desktops to large HPC distributed systems. Operating system: Mac OS X, Linux. Has the code been vectorized or parallelized?: Parallelized through MPI RAM: Depending on the problem size from a few Megabytes to several Gigabytes. Classification: 21.2. External routines: MPI, boost, PETSc, ParMETIS, cmake Nature of problem: Radiative processes play a fundamental role in countless science and engineering contexts, including combustion, astrophysics, atmospheric space re-entry, experiments in plasma facilities (e.g. shock tubes, arc jets). The problem we are interested in is the computation of radiative heat transfer on arbi

关键词： Radiation Monte-Carlo FIRE II Re-entry Particle-tracking Hypersonics Aerothermodynamics

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Refactoring design patterns from object-oriented to Aspect-oriented in Eclipse

Refactoring design patterns from Object-Oriented to Aspect-O...

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International Symposium for Young Scientists in Technology, Engineering and Mathematics, SYSTEM 2015

作者： Contarino, Daniele University of Catania Viale A. Doria 6 Catania95125 Italy

Nowadays, Aspect-oriented programming is used for industrial software systems. However, many useful object-oriented systems have been developed and are still in use and a manual porting of big projects from object-oriented (OO) paradigm to Aspect-oriented (AO) one, making the most of design Patterns (DP), may prove a costly and time-consuming process. This paper proposes a practical approach for automatically converting OO code to AO code, specifically for the implementation of DPs. The solution comprises two essential steps: recognition of the DP in OO code and conversion into AO code. Then, two examples of DP Singleton and Composite implementations on the Eclipse IDE with Eclipse Java Development Tools (JDT) are given. Copyright © 2016 held by the authors.

关键词： Aspect oriented programming

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Video Anomaly Detection in Real Time on a Power-Aware Heterogeneous Platform

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IEEE TRANSACTIONS ON CIRCUITS AND systems FOR VIDEO TECHNOLOGY 2016年第11期26卷 2109-2122页

作者： Blair, Calum G. Robertson, Neil M. Univ Edinburgh Inst Digital Commun Edinburgh EH8 9YL Midlothian Scotland Heriot Watt Univ Vis Lab Edinburgh EH14 4AS Midlothian Scotland

Field-programmable gate arrays (FPGAs) and graphics processing units (GPUs) are often used when real-time performance in video processing is required. An accelerated processor is chosen based on task-specific priorities (power consumption, processing time, and detection accuracy), and this decision is normally made once at design time. All three of the characteristics are important, particularly in battery-powered systems. Here, we propose a method for moving selection of processing platform from a single design-time choice to a continuous run-time one. We implement Histogram of oriented Gradients (HOG) for cars and people and Mixture-of-Gaussians motion detectors running across FPGA, GPU, and central processing unit in a heterogeneous system. We use this to detect illegally parked vehicles in urban scenes. Power, time, and accuracy information for each detector is characterized. An anomaly measure is assigned to each detected object based on its trajectory and location compared with learned contextual movement patterns. This drives processor and implementation selection so that scenes with high behavioral anomalies are processed with faster but more power-hungry implementations, but routine or static time periods are processed with power-optimized and less accurate slower versions. Real-time performance is evaluated on video data sets including i-LIDS. Compared with power-optimized static selection, automatic dynamic implementation mapping is 10% more accurate, but draws 12-W of extra power in our testbed desktop system.

关键词： Event detection field-programmable gate array (FPGA) graphics processing unit (GPU) heterogeneous object detection

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Properties and Interaction of object oriented Software Agent with System 3

Properties and Interaction of Object Oriented Software Agent...

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3rd International Conference on Computing for Sustainable Global Development (INDIACom)

作者： Pandey, Anand Kumar Vasishtha, A. K. Saxena, A. S. Mewad Univ Chittaurgarh Rajasthan India MPCT Dept CSE Gwalior India

ISBN: (纸本)9789380544199

object oriented software Agent technology is the highest emergent region of computer technology and is still an emerging technology. It is an innovative method of modern applications to design and execute enormous entities determined by viewpoint, objectives, capabilities and strategy, and other organization properties such as alteration, interface, and mobility. These types of software agents can be used to illustrate, as well as to enhance many stages of the traditional applications of software agents. Here we proposed a software engineering approach to the applications of agent mediated systems, through the definition and interaction of an object oriented (OO) framework. We believes that object leaning structure of agent technology can decrease the development time and the complication of designing multiple useful applications. We present multiple instantiated properties that use this object oriented agent (OOA) framework to illustrate an implementation.

关键词： Agent attribute mobility object oriented agent(OOA) object oriented framework reactivity

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Domain-Driven design Using Meta-Attributes: A DSL-Based Approach

Domain-Driven Design Using Meta-Attributes: A DSL-Based Appr...

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8th International Conference on Knowledge and systems Engineering (KSE)

作者： Duc Minh Le Duc-Hanh Dang Viet-Ha Nguyen Univ Hanoi Dept Software Engn Hanoi Vietnam VNU Univ Engn & Technol Dept Software Engn Hanoi Vietnam

ISBN: (纸本)9781467389297

Applying object-oriented domain-driven design in practice requires bridging the gaps that exist among the perceived domain class models of the key stakeholders involved. In this paper, we propose a domain-driven design method that uses meta-attributes with an aim to fill these gaps. Our method extends and generalises a previous work to use meta-attributes to build the domain class model. The meta-attributes are designed to not only make it easier for the designer and domain expert to collaboratively capture the domain-specific requirements in the model, but to ease the translation of the model to design specification. This specification is written in an object-oriented, internal DSL. To increase productivity, we define a generator function that realises the meta-mapping between the state and behaviour spaces of a domain class to automatically generate its behavioural specification. We demonstrate our method with an implementation in a prototyping tool for the domain class model.

关键词： object oriented modeling Unified modeling language DSL Metadata Generators Bridges

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