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Dissertation a Meta-Modeling Approach to Specifying
DISSERTATION A META-MODELING APPROACH TO SPECIFYING PATTERNS Submitted by Dae-Kyoo Kim Department of Computer Science In partial fulfillment of the requirements for the Degree of Doctor of Philosophy Colorado State University Fort Collins, Colorado Summer 2004 COLORADO STATE UNIVERSITY June 21, 2004 WE HEREBY RECOMMEND THAT THE DISSERTATION PREPARED UNDER OUR SUPERVISION BY DAE-KYOO KIM ENTITLED A META- MODELING APPROACH TO SPECIFYING PATTERNS BE ACCEPTED AS FULFILLING IN PART REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY. Committee on Graduate Work Committee Member: Dr. James M. Bieman Committee Member: Dr. Sudipto Ghosh Committee Member: Dr. Daniel E. Turk Adviser: Dr. Robert B. France Department Head: Dr. L. Darrell Whitley ii ABSTRACT OF DISSERTATION A META-MODELING APPROACH TO SPECIFYING PATTERNS A major goal in software development is to produce quality products in less time and with less cost. Systematic reuse of software artifacts that encapsulate high-quality development experience can help one achieve the goal. Design patterns are a common form of reusable design experience that can help developers reduce development time. Prevalent design patterns are, however, described informally (e.g., [35]). This prevents systematic use of patterns. The research documented in this dissertation is aimed at developing a practical pattern specification technique that supports the systematic use of patterns during design modeling. A pattern specification language called the Role-Based Metamod- eling Language (RBML) was developed as part of this research. The RBML specifies a pattern as a specialization of the UML metamodel. The RBML uses the Unified Modeling Language (UML) as a syntactic base to enable the use of UML modeling tools for creating and evolving pattern specifications. -
Concurrency Patterns for Easier Robotic Coordination
Concurrency Patterns for Easier Robotic Coordination Andrey Rusakov∗ Jiwon Shin∗ Bertrand Meyer∗† ∗Chair of Software Engineering, Department of Computer Science, ETH Zurich,¨ Switzerland †Software Engineering Lab, Innopolis University, Kazan, Russia fandrey.rusakov, jiwon.shin, [email protected] Abstract— Software design patterns are reusable solutions to Guarded suspension – are chosen for their concurrent nature, commonly occurring problems in software development. Grow- applicability to robotic coordination, and evidence of use ing complexity of robotics software increases the importance of in existing robotics frameworks. The paper aims to help applying proper software engineering principles and methods such as design patterns to robotics. Concurrency design patterns programmers who are not yet experts in concurrency to are particularly interesting to robotics because robots often have identify and then to apply one of the common concurrency- many components that can operate in parallel. However, there based solutions for their applications on robotic coordination. has not yet been any established set of reusable concurrency The rest of the paper is organized as follows: After design patterns for robotics. For this purpose, we choose six presenting related work in Section II, it proceeds with a known concurrency patterns – Future, Periodic timer, Invoke later, Active object, Cooperative cancellation, and Guarded sus- general description of concurrency approach for robotics pension. We demonstrate how these patterns could be used for in Section III. Then the paper presents and describes in solving common robotic coordination tasks. We also discuss detail a number of concurrency patterns related to robotic advantages and disadvantages of the patterns and how existing coordination in Section IV. -
The Evolution of Control Architectures Towards Next Generation
Department of Electronic and Electrical Engineering University College London University of London T h e Ev o l u t io n o f C o n t r o l A rchitectures T o w a r d s N ext G e n e r a t io n N e t w o r k s By Christos Solomonides BEng(Hons), MRes(Distinction) 7 September 2001 A thesis submitted to the University o f London for the Ph.D. in Electronic and Electrical Engineering ProQuest Number: U643054 All rights reserved INFORMATION TO ALL USERS The quality of this reproduction is dependent upon the quality of the copy submitted. In the unlikely event that the author did not send a complete manuscript and there are missing pages, these will be noted. Also, if material had to be removed, a note will indicate the deletion. uest. ProQuest U643054 Published by ProQuest LLC(2016). Copyright of the Dissertation is held by the Author. All rights reserved. This work is protected against unauthorized copying under Title 17, United States Code. Microform Edition © ProQuest LLC. ProQuest LLC 789 East Eisenhower Parkway P.O. Box 1346 Ann Arbor, Ml 48106-1346 A b s t r a c t This thesis describes the evolution of control architectures and network intelligence towards next generation telecommunications networks. Network intelligence is a term given to the group of architectures that provide enhanced control services. Network intelligence is provided through the control plane, which is responsible for the establishment, operation and termination of calls and connections. The work focuses on examining the way in which network intelligence has been provided in the traditional telecommunications environment and in a converging environment. -
Diploma Thesis in Informatics
Munich University of Technology Department of Informatics Diploma Thesis in Informatics Development of a programming-language-like temporal logic specification language Jonathan Streit Date: April 12th, 2006 Supervisor: Instructors: Prof. Dr. Dr. h.c. Manfred Broy Andreas Bauer Dr. Martin Leucker Acknowledgements I would like to express my gratitude to my project instructors, Andreas Bauer and Martin Leucker, for fruitful discussions, fast and detailed answers to my questions, their honesty and time. Furthermore I would like to thank Elmar J¨urgens and Friedemann Gerster- Streit for reading and commenting on this thesis, as well as Gerhard Dirlich for both comments on this thesis and advice on statistics. Abstract This thesis presents the high-level temporal specification language Salt (Struc- tured Assertion Language for Temporal Logic), designed for the comfortable creation of concise specifications to be used in model checking and runtime ver- ification. Unlike other specification languages, Salt does not target a specific domain. Besides the common temporal operators, Salt provides exception operators, counting quantifiers and support for simplified regular expressions, as well as scope operators, allowing to express that a property has to hold before, after or in between some events. Frequently occurring patterns can be defined as parameterisable macros and can be used in a similar way as operators of the language. A timed extension allows to express real-time constraints. In contrast to many proprietary specification languages, Salt can be trans- lated into Ltl—or in the case of real-time properties into Tltl—and thus be used as a front end to existing verification tools. A compiler performing this task has been implemented and is presented in this thesis. -
Specification and Verification of Encapsulation in Java Programs
Specification and Verification of Encapsulation in Java Programs Andreas Roth Institut f¨urLogik, Komplexit¨at und Deduktionssysteme Universit¨atKarlsruhe, Germany E-mail: [email protected] Abstract. Encapsulation is a major concept in object-oriented designs as design pattern catalogues, approaches for alias control, and the need for modular correctness of components demonstrate. The way encapsu- lation can be formally specified in existing approaches has several short- comings. We show how encapsulation in sequential Java programs is specified by means of a new concept, called encapsulation predicates, in a clearly defined and comprehensible way, well fitting into the concept of design by contract. Encapsulation predicates extend existing functional specification languages. There are two kinds: basic predicates, which pro- vide the actual extension, and convenience predicates, which are abbre- viations for often used specification patterns. With encapsulation pred- icates, encapsulation properties in design patterns can be modelled and approaches to control aliasing can be simulated. Specifications contain- ing encapsulation predicates are deductively checkable, but can also be tackled by static analysis methods which are similar to alias control ap- proaches. 1 Introduction Encapsulation plays a major role in object-oriented software development for at least one important reason: Without it, the complexity of inter-object relations would become uncontrollable, and one of the most basic concepts of computer science, the division of tasks into subtasks, indispensable to master complex problems, would be impossible. It is thus quite striking that formal methods for software development have discovered only relative lately this problem for real-world object-oriented lan- guages, and have so far provided solutions that are only partially satisfactory (Sect. -
Executive Summary: Balking Design Patterns by Drew Goldberg
Executive Summary: Balking Design Patterns By Drew Goldberg Balking Patterns are used to prevent an object from executing certain code if it is an incomplete or inappropriate state. These Design Patterns include: The Balking Pattern, The Guarded Suspension, and The Double-Checked Locking Pattern. These patterns seem to have arisen when JVMs were slower and synchronization wasn't as well understood as it is today. These patterns have appeared become somewhat antiquated as JVMs improved, newer design pattern(s) were introduced, and the increased use of functional programming language's immutable/persistent data structures help reduce the complexities of concurrency's implementation and maintenance. Still it is nice to see what was used in the past inorder to get a better perspective of today's concurrency techniques. Balking - Design Patterns Dealing with Incomplete and Incorrect States By Drew Goldberg What are balking patterns? ● Balking - If an object’s method is invoked when the object is in an inappropriate state, then the method will return without doing anything. Balking Design Patterns: ● Balking Design Pattern ● Guarded Suspension ● Double Checked Locking Reference: http://www.mindspring.com/~mgrand/pattern_synopses.htm#Balking Balking Pattern: Intro ● This software design pattern is used to invoke an action on an object only when the object is in a particular state. ● Objects that use this pattern are generally only in a state that is prone to balking temporarily but for an unknown amount of time reference: http://en.wikipedia.org/wiki/Balking_pattern Balking Pattern: Implementation public class Example { private boolean jobInProgress = false; public void job() { synchronized(this) { If the boolean instance variable if (jobInProgress) { jobInProgress is set to false, then return; the job() will return without having } jobInProgress = true; executed any commands and } therefore keeping the object's // Code to execute job goes here state the same. -
Composite Design Patterns
Composite Design Patterns Dirk Riehle Ubilab, Union Bank of Switzerland, Bahnhofstrasse 45, CH-8021 Zurich Phone: +41-1-234-2702, fax: +41-1-236-4671 E-mail: [email protected] or [email protected] WWW: http://www.ubs.com/ubilab + staff/riehle Abstract Software design patterns are the core abstractions from successful recurring problem solutions in software design. Composite design patterns are the core abstractions from successful recurring frameworks. A composite design pattern is a pattern that is best described as the composition of further patterns the integration of which shows a synergy that makes the composition more than just the sum of its parts. This paper presents examples of composite patterns, dis- cusses a role-based analysis and composition technique, and demonstrates that composite patterns extend the pattern idea from single problem solutions to object-oriented frameworks. 1 Introduction into a composite pattern, if and only if (a) a relevant synergy be- tween the pattern interactions arises, and (b) this synergy can be A developer versed in software design patterns might explain the observed as a recurring design theme. Model-View-Controller paradigm (MVC, [KP88, Ree96a]) for designing interactive software systems like this: “(a) MVC helps This paper discusses the notion of composite pattern. It introduces you design applications with graphical user interfaces. Its core are a notation based on roles to better describe and compose patterns. three collaborating objects: a Model object which represents an It presents an analysis and composition technique to better cope instance of a domain concept, a View object which realizes a with the complexity of composite patterns. -
Php|Architect's Guide to PHP Design Patterns
php|architect’s Guide to php|architect’s PHP Design Patterns Design patterns are comprehensive, well-tested solutions to common problems Guide to that developers everywhere encounter each day. Although designed for solving general programming issues, some of them have been successfully adapted to the specific needs of Web development. PHP Design Patterns php|architect’s Guide to PHP Design Patterns is the first comprehensive guide to the application of design patterns to the PHP development language. Designed to satisfy the need of enterprise-strength development, you will find this book both an excellent way to learn about design pattern and an A Practical Approach to Design Patterns irreplaceable reference for your day-to-day programming for the PHP 4 and PHP 5 Developer With coverage of more than XXX different types of patterns, including BLAH, BLAH, BLAH, BLAH and much more, this book is the ideal resource for your Jason E. Sweat enterprise development with PHP 4 and PHP 5. NanoBooks are excellent, in-depth resources created by the publishers of php|architect (http://www.phparch.com), the world’s premier magazine dedicated Guide PHP Design to Patterns php|architect’s to PHP professionals. NanoBooks focus on delivering high-quality content with in-depth analysis and expertise, centered around a single, well-defined topic and without any of the fluff of larger, more expensive books. USA $21.99 From the publishers of Canada $29.99 U.K. £16.99 Net Shelve under PHP/Web Development/Internet Programming Jason E. Sweat Jason E. 7.50 x 9.25 .309 7.50 x 9.25 PHP|ARCHITECT’S GUIDE TO PHP DESIGN PATTERNS by Jason E. -
Designpatternsphp Documentation 1.0
DesignPatternsPHP Documentation 1.0 Dominik Liebler and contributors 2015 04 12 Contents 1 Patterns 3 1.1 Creational................................................3 1.1.1 Abstract Factory........................................3 1.1.2 Builder............................................. 10 1.1.3 Factory Method......................................... 17 1.1.4 Multiton............................................. 22 1.1.5 Pool............................................... 24 1.1.6 Prototype............................................ 28 1.1.7 Simple Factory......................................... 31 1.1.8 Singleton............................................ 35 1.1.9 Static Factory.......................................... 37 1.2 Structural................................................. 40 1.2.1 Adapter / Wrapper....................................... 40 1.2.2 Bridge.............................................. 45 1.2.3 Composite............................................ 49 1.2.4 Data Mapper.......................................... 53 1.2.5 Decorator............................................ 60 1.2.6 Dependency Injection...................................... 65 1.2.7 Facade.............................................. 69 1.2.8 Fluent Interface......................................... 73 1.2.9 Proxy.............................................. 76 1.2.10 Registry............................................. 79 1.3 Behavioral................................................ 81 1.3.1 Chain Of Responsibilities................................... -
Aspect-Oriented Implementation of Concurrent Processing Design Patterns
ICCGI 2014 : The Ninth International Multi-Conference on Computing in the Global Information Technology Aspect-Oriented Implementation of Concurrent Processing Design Patterns Shingo Kameyama, Masatoshi Arai, Noriko Matsumoto, Norihiko Yoshida Graduate School of Science and Engineering Saitama University Saitama, Japan fshingo, arai, noriko, [email protected] Abstract—A variety of design patterns are now widely used in This paper is organized as follows: Section 2 gives an software development as their catalog is a collection of knowledge overview of design patterns. Section 3 presents an overview on design and programming techniques and namely elaborated and some functions of aspect-orientated implementation. Sec- patterns. However, as each design pattern is described in the tion 4 introduces an example of aspect-oriented implementa- forms of texts, charts, and simple code examples, it has some tion of GoF design patterns. Section 5 and Section 6 explain limitations in applicability and formal treatment. One of its aspect-oriented implementation of concurrent processing de- reasons is that the design patterns include some crosscutting concerns. To solve this problem, aspect-oriented implementation sign patterns. Section 7 gives some considerations, and Section of the so-called “Gang of Four” (GoF) design patterns, which are 8 contains some concluding remarks. cataloged for component reuse has been proposed. In this paper, we propose aspect-oriented implementation of design patterns for concurrent processing, so as to improve and accelerate design II. DESIGN PATTERNS and development processes of, for example, network systems, embedded systems, and transaction systems. Our aspect-oriented Design patterns are a catalog of typical solutions for some implementation tailors hierarchical or inclusive relationships typical problems in designing and programming in software among design patterns well which are not found in the patterns development. -
A UML Profile for Domain Specific Patterns: Application to Real-Time 33
A UML-Profile for domain specific patterns: Application to real-time Saoussen Rekhis1, Nadia Bouassida2, Rafik Bouaziz1, Bruno Sadeg3 1,2 MIRACL-ISIMS, Sfax University, BP 1088, 3018, Sfax, Tunisia. 3LITIS, UFR des Sciences et Techniques, BP 540, 76 058, Le Havre Cedex, France. 1{saoussen.rekhis, raf.bouaziz}@fsegs.rnu.tn [email protected] [email protected] Abstract. The design of Real-Time (RT) applications is a difficult task since it must take into account the specification of time-constrained data and time- constrained transactions. The design of these applications can be facilitated through the reuse of RT design patterns that improve software quality and capture RT domain knowledge and design expertise. However, the difficulty of RT design patterns comprehension reinforces the need for a suitable design language. This language has to express concepts modeling RT features and distinguishing the commonalities and differences between RT applications. This paper presents new UML notations that take into account the design of both RT specific concepts and the variability of domain specific patterns. The UML extensions are, then, illustrated in the RT context using an example of a controller pattern. Keywords: UML notation, domain specific patterns, instantiation, real- time applications. 1 Introduction A design pattern [1] is a description of a solution to a common problem in software design. It captures the design expertise necessary for developing applications and allows the reuse at both the design and code levels. Design patterns can be general and cover different domains of application (e.g. patterns of GoF [1]) and they can, also, be intended for a particular domain, in this case they are called domain-specific patterns [24]. -
Software Frameworks, Architectural and Design Patterns
Journal of Software Engineering and Applications, 2014, 7, 670-678 Published Online July 2014 in SciRes. http://www.scirp.org/journal/jsea http://dx.doi.org/10.4236/jsea.2014.78061 Software Frameworks, Architectural and Design Patterns Njeru Mwendi Edwin Department of Computing, Jomo Kenyatta University of Agricluture & Technology, Nairobi, Kenya Email: [email protected] Received 21 April 2014; revised 20 May 2014; accepted 14 June 2014 Copyright © 2014 by author and Scientific Research Publishing Inc. This work is licensed under the Creative Commons Attribution International License (CC BY). http://creativecommons.org/licenses/by/4.0/ Abstract Software systems can be among the most complex constructions in engineering disciplines and can span into years of development. Most software systems though implement in part what has already been built and tend to follow known or nearly known architectures. Although most soft- ware systems are not of the size of say Microsoft Windows 8, complexity of software development can be quick to increase. Thus among these methods that are the most important is the use of ar- chitectural and design patterns and software frameworks. Patterns provide known solutions to re-occurring problems that developers are facing. By using well-known patterns reusable compo- nents can be built in frameworks. Software frameworks provide developers with powerful tools to develop more flexible and less error-prone applications in a more effective way. Software frame- works often help expedite the development process by providing necessary functionality “out of the box”. Providing frameworks for reusability and separation of concerns is key to software de- velopment today.