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Model-driven engineering (MDE) introduces additional challenges for managing evolution. For example, a metamodel change may affect instance models. Existing tool supported approaches for updating models in response to a metamodel change assume extra effort from metamodel developers. When no existing approach is applicable, metamodel users must update their models manually, an error prone and tedious...
Model management is the discipline of managing artefacts used in Model-Driven Engineering (MDE). A model management framework defines and implements the operations (such as transformation or code generation) required to manipulate MDE artefacts. Modern approaches to model management generally implement these operations via domain-specific languages (DSLs). This paper presents and compares the principles...
Calculating differences between models is an important and challenging task in Model Driven Engineering. Model differencing involves a number of steps starting with identifying matching model elements, calculating and representing their differences, and finally visualizing them in an appropriate way. In this paper, we provide an overview of the fundamental steps involved in the model differencing...
The Eclipse graphical modeling framework (GMF) provides substantial infrastructure and tooling for developing diagram-based editors for modelling languages atop the Eclipse platform. It is widely accepted that implementing a visual editor using the built-in GMF facilities is a particularly complex and error-prone task and requires a steep learning curve. We present an approach that raises the level...
A software development process is conceptually an abstract form of model transformation, starting from an enduser model of requirements, through to a system model for which code can be automatically generated. The success (or failure) of such a transformation depends substantially on obtaining a correct, well-formed initial model that captures user concerns. Model-based testing automates black box...
Some approaches to Model-Based Testing focus on test case generation from assertions (operation pre- and post- conditions) and invariants, e.g., written in the Object Constraint Language. In such a setting, assertions must be validated. Validation is often carried out via executing scenarios wherein system operations are applied, to detect unsatisfied invariants or failed preconditions. This paper...
A model management workflow typically consists of a number of interdependent model-management tasks such as model validation, transformation, merging, comparison and text generation. As such workflows are becoming more and more complex, errors in individual tasks are likely to be propagated to subsequent tasks and eventually compromise the operation of the entire workflow. Therefore, building confidence...
With the advent of domain specific languages for model engineering, detecting inconsistencies between models is becoming increasingly challenging. Nowadays, it is not uncommon for models participating in the same development process to be captured using different modelling languages and even different modelling technologies. We present a classification of the types of relationships that can arise...
Modern systems modelling languages frequently support the use of multiple views in order to provide flexible, extensible, and rich mechanisms for capturing system characteristics. Architectural description languages (ADLs) often provide many useful capabilities but fail to provide support for ensuring view consistency simply because they present a single view of the system. An ADL used for building...
Modern online multiplayer games are complex heterogeneous distributed systems comprised of servers and untrusted clients, which are often engineered under considerable commercial pressures. Under these conditions, security breaches allowing clients to employ illegal behaviours have become common; current commercial approaches have limited capabilities for reacting rapidly to such threats. This paper...
The grid represents an emerging class of highly complex distributed systems that aims to realize the full potential of the Web services computational and architectural models. Blueprints and recipes for building grids do not as of yet exist. We present a grid architectural style, and describe how it has been designed, and its relationships with other key elements of distributed systems
Modeling languages, like programming languages, need to be designed if they are to be practical, usable, accepted, and of lasting value. We present principles for the design of modeling languages. To arrive at these principles, we consider the intended use of modeling languages. We conject that the principles are applicable to the development of new modeling languages, and for improving the design...
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