International Journal of Computer and Applications

The need to handle increasingly larger data volumes is one factor driving the adoption of a new class of nonrelational NoSQL databases. Advocates of NoSQL databases claim they can be used to build systems that are more performant, scale better, and are easier to program. NoSQL Distilled is a concise but thorough introduction to this rapidly emerging technology. Pramod J. Sadalage and Martin Fowler explain how NoSQL databases work and the ways that they may be a superior alternative to a traditional RDBMS. The authors provide a fast-paced guide to the concepts you need to know in order to evaluate whether NoSQL databases are right for your needs and, if so, which technologies you should explore further. The first part of the book concentrates on core concepts, including schemaless data models, aggregates, new distribution models, the CAP theorem, and map-reduce. In the second part, the authors explore architectural and design issues associated with implementing NoSQL. They also present realistic use cases that demonstrate NoSQL databases at work and feature representative examples using Riak, MongoDB, Cassandra, and Neo4j. In addition, by drawing on Pramod Sadalages pioneering work, NoSQL Distilled shows how to implement evolutionary design with schema migration: an essential technique for applying NoSQL databases. The book concludes by describing how NoSQL is ushering in a new age of Polyglot Persistence, where multiple data-storage worlds coexist, and architects can choose the technology best optimized for each type of data access.

NoSQL Distilled: A Brief Guide to the Emerging World of Polyglot Persistence

Whether there is an (emerging or legacy) Domain-Specific Language to increase the expressiveness of your coworkers or whether you are about to invent a new General Purpose Prgramming Language: Tool support that goes beyond a parser/compiler is essential to make other people adopt your language and to be more productive. Xtext is an award- winning framework to build such tooling.In this tutorial we explain how to define a language and a statically typed, EMF-based Abstract Syntax Tree using only a grammar. We then generate a parser, a serializer and a smart editor from it. The editor provides many features out-of-the-box, such as syntax highlighting, content-assist, folding, jump-to-declaration and reverse-reference lookup across multiple files. Then, it is shown how literally every as- pects of the language and its complementary tool support can be customized using Dependency Injection, especially how this can be done for linking, formatting and validation. As an outlook, we will demonstrate how to integrate a custom language with Java, how Xtext maintains a workspace-wide index of named elements and how to implement incremental code generation or attach an interpreter.

Xtext: implement your language faster than the quick and dirty way

https://hal.inria.fr/hal-00767175/document

FAMILIAR: A domain-specific language for large scale management of feature models

Computer science is undergoing a revolution today, in which language designers are shifting attention from general purpose programming languages to so-called domain-specific languages (DSLs). General-purpose languages like Java, C#, C++, and C have long been the primary focus of language research. The idea was to create one language that would be better suited for programming than any other language. Ironically, we now have so many different general purpose languages that it is hard to imagine how this goal could be attained. Instead of aiming to be the best for solving any kind of computing problem, DSLs aim to be particularly good for solving a specific class of problems, and in doing so they are often much more accessible to the general public than traditional programming languages.

Plenary talk III Domain-specific languages

To match the needs of the fast paced generation, the speed of computing has also increased enormously. But, there is a limit to which the processor speed can be amplified. Hence in order to increase productivity, there is a need to change focus from processing time to programming time. Reduction in programming time can be achieved by identifying the domain to which the task belongs and using an appropriate Domain Specific Language (DSL). DSLs are constrained to use terms and concepts pertaining to an explicit domain making it much easier for the programmers to understand and learn, and cuts down the development time drastically. In this paper, we will understand what a DSL is; explore a number of DSLs spanning various phases of software development life cycle in terms of features that elucidates their advantages over general purpose languages and perform in depth study by practically applying a few open source DSLs: ‘Cascading’, Naked Objects Framework and RSpec.

/pdf/domain-specific-languages-ikx1yn3tu5.pdf

Domain Specific Languages

more and more business systems designed using object oriented approach, written using object oriented languages like Java and interfaces created through various tools, there is need for such systems to show the quintessence of object orientation, which is "behavioural completeness". This paper discusses Naked Objects Framework (NOF), which is an open source prototyping tool based on Java that auto generates an entire system that is behaviourally complete by plainly defining behaviourally rich objects that can be easily accessed by the user. The resulting object oriented interface is very user friendly and allows both the developer and the client to equally contribute in the requirements specification phase.

/pdf/naked-objects-framework-1p9w73feo5.pdf

Devika Lakshmanan

Papers

Domain Specific Languages

Naked Objects Framework