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FOSD Metamodels
Feature-oriented software development (FOSD) is a general paradigm for software generation, where a model of a product line is a tuple of 0-ary and 1-ary functions (program transformations). This page discusses a more abstract concept of models of product lines of product lines (PL**2) called metamodels, and product lines of product lines of product lines called meta-metamodels (PL**3), and further abstract concepts. Metamodels A metamodel is a model whose instances are models. A GenVoca model of a product line is a tuple whose components are features (0-ary or 1-ary functions). An extension (a.k.a. delta or refinement) of a model is a "meta-feature", which is a tuple of deltas that can modify an existing product line by modifying existing features and adding new features. As a simple example, consider GenVoca model M that contains three features a-c: M = a, b, c /math> Suppose meta-model MM contains three meta-features AAA-CCC, each of which is a tuple with a single non-ide ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metamodel
A metamodel or surrogate model is a model of a model, and metamodeling is the process of generating such metamodels. Thus metamodeling or meta-modeling is the analysis, construction and development of the frames, rules, constraints, models and theories applicable and useful for modeling a predefined class of problems. As its name implies, this concept applies the notions of meta- and modeling in software engineering and systems engineering. Metamodels are of many types and have diverse applications. Overview A metamodel/ surrogate model is a model of the model, i.e. a simplified model of an actual model of a circuit, system, or software like entity. Metamodel can be a mathematical relation or algorithm representing input and output relations. A model is an abstraction of phenomena in the real world; a metamodel is yet another abstraction, highlighting properties of the model itself. A model conforms to its metamodel in the way that a computer program conforms to the grammar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feature-oriented Programming
In computer programming, feature-oriented programming (FOP) or feature-oriented software development (FOSD) is a programming paradigm for program generation in software product lines (SPLs) and for incremental development of programs. History FOSD arose out of layer-based designs and levels of abstraction in network protocols and extensible database systems in the late-1980s. A program was a stack of layers. Each layer added functionality to previously composed layers and different compositions of layers produced different programs. Not surprisingly, there was a need for a compact language to express such designs. Elementary algebra fit the bill: each layer was a function (a program transformation) that added new code to an existing program to produce a new program, and a program's design was modeled by an expression, i.e., a composition of transformations (layers). The figure to the left illustrates the stacking of layers i, j, and h (where h is on the bottom and i is on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Feature-oriented Programming
In computer programming, feature-oriented programming (FOP) or feature-oriented software development (FOSD) is a programming paradigm for program generation in software product lines (SPLs) and for incremental development of programs. History FOSD arose out of layer-based designs and levels of abstraction in network protocols and extensible database systems in the late-1980s. A program was a stack of layers. Each layer added functionality to previously composed layers and different compositions of layers produced different programs. Not surprisingly, there was a need for a compact language to express such designs. Elementary algebra fit the bill: each layer was a function (a program transformation) that added new code to an existing program to produce a new program, and a program's design was modeled by an expression, i.e., a composition of transformations (layers). The figure to the left illustrates the stacking of layers i, j, and h (where h is on the bottom and i is on t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FOSD Origami
Feature-oriented programming or ''feature-oriented software development (FOSD)'' is a general paradigm for program synthesis in software product lines. The feature-oriented programming page is recommended, it explains how an FOSD model of a domain is a tuple of 0-ary functions (called values) and a set of 1-ary (unary) functions called features. This page discusses multidimensional generalizations of FOSD models, which are important for compact specifications of complex programs. Origami A fundamental generalization of metamodels is ''origami''. The essential idea is that a program's design need not be represented by a single expression; multiple expressions can be used. This involves the use of multiple orthogonal GenVoca models. :: Example: Let T be a tool model, which has features P (parse), H (harvest),D (doclet), and J (translate to Java). P is a value and the rest are unary-functions. A tool T1 that parses a file written in a Java dialect language and translates it to pure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FOSD Program Cubes
In feature-oriented software development, feature-oriented software development program cubes (FOSD program cubes) are n-dimensional arrays of functions (program transformations) that represent n-dimensional product lines. A ''program'' is a composition of features: a base program is augmented with increments in program functionality, called ''features'', to produce a complex program. A software product line (SPL) is a family of related programs. A typical product line has F0 as a base program, and F1..Fn as features that could be added to F0. Different compositions of features yield different programs. Let + denote the feature composition operation. A program P in SPL might have the following expression: P = F8 + F4 + F2 + F1 + F0 That is, P extends program F0 with features F1, F2, F4, and F8 in this order. We can recast P in terms of a projection and contraction of a 1-dimensional array. Let Fi = 0 .. Fndenote the array of features used by a product line. A projection of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
FOSD Feature Interactions
In computer programming, feature-oriented programming (FOP) or feature-oriented software development (FOSD) is a programming paradigm for program generation in software product lines (SPLs) and for incremental development of programs. History FOSD arose out of layer-based designs and levels of abstraction in network protocols and extensible database systems in the late-1980s. A program was a stack of layers. Each layer added functionality to previously composed layers and different compositions of layers produced different programs. Not surprisingly, there was a need for a compact language to express such designs. Elementary algebra fit the bill: each layer was a function (a program transformation) that added new code to an existing program to produce a new program, and a program's design was modeled by an expression, i.e., a composition of transformations (layers). The figure to the left illustrates the stacking of layers i, j, and h (where h is on the bottom and i is on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
