Adaptive Object-Oriented Software: The Demeter Method with by Karl Lieberherr PDF

By Karl Lieberherr

ISBN-10: 053494602X

ISBN-13: 9780534946029

This groundbreaking publication offers a whole technique for adaptive programming in any object-oriented language. Lieberherr's process presents a brand new method of object-oriented software layout that is going past item encapsulation and hard-coded navigation paths to accomplish extra versatile interactions between gadgets. Designers utilizing this adaptive approach paintings at a better, extra schematic point of abstraction to layout software program courses. Graph notation is used to symbolize the category constitution of this system, and a "propagation trend" language describes the right way to distribute significant equipment (including navigation) around the program's constitution. utilizing this system, software program designers can create courses which are simply changed and adaptable as wishes evolve.

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Additional resources for Adaptive Object-Oriented Software: The Demeter Method with Propagation Patterns: The Demeter Method with Propagation Patterns

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The operation selected depends on the value of the variable at run-time. 1 CONCEPTS Object-oriented programming was made popular initially by the programming language Smalltalk GR83], developed at Xerox PARC, but the important concepts of object-oriented programming were, however, already present in the programming language Simula 67 . There are three major ideas in object-oriented programming. 1. Modularity, Information hiding : Objects de ne programs. Each object is in relation with other objects and has behavior associated with it.

We assume there is a Conglomerate object that contains somewhere inside of it an O cer object, which contains a Salary object. These assumptions imply that for any class structure to successfully customize the computeSalary adaptive program, it must de ne a Company class that contains a nested O cer class, which contains in turn a Salary class. In addition, we require that the computeSalary program must not consider o cers in subsidiary companies of the conglomerate. 3. ADAPTIVE PROGRAMMING 9 turns into an assumption that the adaptive program must somehow bypass the relationship subsidiaries of any company in the conglomerate.

A possibly empty set of target vertices where a traversal ends, indicated by the keyword *to*. 3. A possibly empty set of through edges, out of which each path denoted by a traversal is required to include at least one. Through edges are indicated by the keyword *through*. 4. A possibly empty set of bypassing edges, none of which may be included in any path denoted by a traversal. Bypassing edges are indicated by the keyword *bypassing*. Through and bypassing edges are speci ed with relation variables.

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Adaptive Object-Oriented Software: The Demeter Method with Propagation Patterns: The Demeter Method with Propagation Patterns by Karl Lieberherr


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