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AutoGen: Easing model management through two levels of abstraction

JOURNAL OF visual LANGUAGES AND COMPUTING 2006年第6期17卷 508-527页

作者： Song, Guanglei Kong, Jun Zhang, Kang Univ Texas Dallas Dept Comp Sci Richardson TX 75083 USA N Dakota State Univ Fargo ND 58105 USA

Due to its extensive potential applications, model management has attracted many research interests and gained great progress. To provide easy-to-use interfaces, we have proposed a graph transformation-based model management approach that provides intuitive interfaces for manipulation of graphical data models. The approach consists of two levels of graphical operators: low-level customizable operators and high-level generic operators, both of which consist of a set of graph transformation rules. Users need to program or tune the low-level operators for desirable results. To further improve the ease-of-use of the graphical model management, automatic generation of low level of operators is highly desirable. The paper formalizes specifications of low- and high-level operators and proposes a generator to automatically transform high-level operators into low-level operators upon specific input data models. Based on graph transformation theoretical foundation, we design an algorithm for the generator to automatically produce low-level operators from input data models and mappings according to a high-level operator. The generator, called AutoGen, therefore eliminates many tedious specifications and thus eases the use of the graphical model management system. (C) 2006 Elsevier Ltd. All rights reserved.

关键词： model management graph transformation graph grammar visual programming schema interoperation

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visual snippet editor - Success with less

Visual snippet editor - Success with less

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IEEE Symposium on visual Languages and Human-Centric Computing

作者： Giffen, P. R. Adams, G. McGuire, K. Tsui, R. Hoffman, H. IBM Ottawa Labs Ottawa ON Canada

ISBN: (纸本)0769525865

visual programming has achieved limited success when used as a general programming language. Yet it clearly has advantages in simplifying the task of expressing executable logic. We show that a visual programming metaphor can be high v appropriate and successful when focused on the smaller task of writing snippets of code. These visual Snippets are needed to complete a larger visual modeling and editing environment. The user would otherwise be required to define the snippet in Java (TM). This visual Snippet Editor has been successfully deployed in a major IBM (R) software product. Initial customer and usability study feedback have shown that it is a highly viable alternative to writing Java. It supports several user skill bases including those with introductory Java skills and those who program infrequently.

关键词： visual programming visualization Clearly

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A circuit board approach to building web applications

A circuit board approach to building web applications

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IASTED International Conference on Internet and Multimedia Systems and Applications

作者： Avoyan, H Mehrabyan, A Amer Univ Armenia 40 Baghramyan Ave Yerevan Armenia

ISBN: (纸本)0889865647

[1] The Buildap (formerly known as VSCB visual Software Circuit Board) platform supports a component based development methodology towards the development of software systems. The circuit board design techniques and methodologies, which have evolved for electronic device and component engineering for decades, now applied for software systems and applications, makes the component based development process easy to visualize and comprehend. This paper describes the Buildap component based approach for well-known PetStore web application development. [2] The PetStore is a reference application from the Java Enterprise Blueprints program, supported by Sun Microsystems. PetStore becomes the standard way for evaluation of different technologies. PetStore implementations are available in number of technologies and frameworks, including J2EE and Net.

关键词： rapid application development visual programming web engineering quick prototyping component based development component library visual circuit based software development

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Pragmatic lighting transition design for virtual environments

Pragmatic lighting transition design for virtual environment...

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IEEE Symposium on visual Languages and Human-Centric Computing

作者： Gross, Joshua B. Penn State Univ Coll Informat Sci & Technol University Pk PA 16801 USA

This abstract describes and motivates Ideel, a tool to explore expression of high-level lighting design changes for interactive virtual environments. Ideel allows lighting designers to quickly describe lighting change... 详细信息

ISBN: (纸本)0769525865

关键词： visual programming virtual environments

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Subtext: Uncovering the simplicity of programming

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ACM SIGPLAN NOTICES 2005年第10期40卷 505-518页

作者： Edwards, J MIT CSAIL Cambridge MA 02139 USA

Representing programs as text strings makes programming harder then it has to be. The source text of a program is far removed from its behavior. Bridging this conceptual gulf is what makes programming so inhumanly difficult - we are not compilers. Subtext is a new medium in which the representation of a program is the same thing as its execution. Like a spreadsheet, a program is visible and alive, constantly executing even as it is edited. Program edits are coherent semantic transformations. The essence of this new medium is copying. Programs are constructed by copying and executed by copyflow: the projection of changes through copies. The simple idea of copying develops into a rich theory of higher-order continual copying of trees. Notably absent are symbolic names, the workhorse of textual notation, replaced by immediately-bound explicit relationships. Subtext unifies traditionally distinct programming tools and concepts, and enables some novel ones. Ancestral structures are a new primitive data type that combines the features of lists and records, along with unproblematic multiple inheritance. Adaptive conditionals use first-class program edits to dynamically adapt behavior. A prototype implementation shows promise, but calls for much further research. Subtext suggests that we can make programming radically easier, if we are willing to be radical.

关键词： human factors languages non-textual programming visual programming prototypes copying

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Achieving flexibility in direct-manipulation programming environments by relaxing the edit-time grammar

Achieving flexibility in direct-manipulation programming env...

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IEEE Symposium on visual Languages and Human-Centric Computing

作者： Birnbaum, BE Goldman, KJ Washington Univ St Louis MO 63130 USA

ISBN: (纸本)0769524435

Structured program editors can lower the entry barrier for beginning computer science students by preventing syntax errors. However, when editors force programs to be executable after every edit, a rigid development process results. We explore the use of a separate edit-time grammar that is more permissive than the runtime grammar. This helps achieve a balance between structured editing and flexibility, particularly in live development environments. JPie is a graphical programming environment that applies this separation to the live development of Java applications. We present the design goals for JPie's edit-time grammar and describe how its implementation supports a balance between structure and flexibility. As further illustration of the benefits of a relaxed edit-time grammar, we present "mixed-mode editing," an integration of textual and graphical editing for added flexibility.

关键词： Java computer science education grammars graphical user interfaces programming environments structured programming visual programming JPie Java application development computer science students direct-manipulation programming environment edit-time gramma

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Assisting end-users in understanding and programming simulations

Assisting end-users in understanding and programming simulat...

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IEEE Symposium on visual Languages and Human-Centric Computing

作者： Neumann, C Oregon State Univ Corvallis OR 97331 USA

ISBN: (纸本)0769524435

We live in a media-rich environment. Today's technology user is accustomed to visual, interactive content but faced with challenges for authoring such content. The divide between the user and the creator grows with the greater complexity of the media. We seek to enable end-users to develop their own virtual environments through end-user programming. In particular, we are interested in helping American football coaches create digital playbooks with animated content. Such an environment requires the presentation of a large amount of information. This information can be associated with virtual agents, spatial locations, particular play formations, etc. We are currently focusing on assistive visualization techniques for both the programming and presentation of the strategy information.

关键词： authoring systems computer animation content management data visualisation digital simulation software agents sport visual programming American football coach animated content assistive visualization content authoring digital playbooks end-user programmi authoring systems visual programming Data visualisation computer animation Digital simulation Intelligent agents End users Sports presentation

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Kedama: A GUI-based interactive massively parallel particle programming system

Kedama: A GUI-based interactive massively parallel particle ...

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IEEE Symposium on visual Languages and Human-Centric Computing

作者： Ohshima, Y Twin Sun Inc El Segundo CA 90245 USA

ISBN: (纸本)0769524435

Decentralized and complex systems can be powerful tools for modeling concepts in mathematics, science and engineering. StarLogo and NetLogo were the first systems to allow middle and high school children to build dynamic models from many thousands of programmable particles. This has inspired Kedama: an authoring system that simplifies the scripting and construction of massively parallel models to allow more students to join in this new rich environment. This has given rise to new user interface and programming language designs. Kedama has the following notable features: 1) Scripts in Kedama can be written in a graphical the scripting interface. & users are alleviated from syntax errors, and all program elements are visually presented to the user 2) Kedama is an extension of Squeak eToys: children who have learned to "script in the large" can use same techniques to "script in the small" with many thousands of objects. 3) The semantics and syntax are simplified but retain full power of expression. 4) The UI in Kedama is dynamic: scripts and other properties in Kedama can be dynamically modified while scripts are kept running. 5) Kedama is more pot-table, being able to run on more than two dozen types of platforms, including the most used around the world. 6) Kedama is fast. Various simulations typically run about 3 times faster than previous systems. This improvement made it possible to write different classes of examples.

关键词： authoring systems formal specification graphical user interfaces interactive systems parallel programming programming environments programming language semantics visual programming GUI Kedama Squeak eToys authoring system interactive system model constru interactive systems authoring systems programming language semantics visual programming programming environments Parallel programming Scripts Formal specifications User Interface Device Component syntax

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Subtext: Uncovering the simplicity of programming

Subtext: Uncovering the simplicity of programming

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20th Conference on Object-Oriented programming, Systems, Languages and Applications

作者： Edwards, J MIT CSAIL Cambridge MA 02139 USA

关键词： human factors languages non-textual programming visual programming prototypes copying

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Modelling and simulation of hydraulic load-sensing systems using object-oriented programming environment

Modelling and simulation of hydraulic load-sensing systems u...

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19th European Conference on Modelling and Simulation (ECMS 2005)

作者： Grossschmidt, G Harf, M Tallinn Univ Technol Inst Cybernet EE-12618 Tallinn Estonia

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