2,246 papers · page 90 of 113
Patterns and frameworks are two approaches to the development of both new and evolving software systems. An implicit hypothesis is that are reduced by leveraging knowledge previously collected, analyzed, organized, and packaged. Discovery (or getting started costs) include both t…
Interprocedural analyses enable optimizing compilers to more precisely model the effects of non-inlined procedure calls, potentially resulting in substantial increases in application performance. Applying interprocedural analysis to programs written in object-oriented or function…
Open Implementation Analysis and Design (OIA/D) has been introduced as a design methodology for object-oriented software systems, and in particular for substrate software. In this paper we detail our experiences with using OIA/D to design and implement a common substrate componen…
The CORBA Event Service provides a flexible model for asynchronous communication among objects. However, the standard CORBA Event Service specification lacks important features required by real-time applications. For instance, operational flight programs for fighter aircraft have…
Finalization occurs when a garbage collector informs an application that an object is "almost collectable." It is used to help an application maintain its invariants. To make finalization more useful, this paper defines "almost collectable" in terms of a new class of objects, cal…
Over the past years, the Object Technology community has seen the birth of a number of new technology ideas that have changed the way we do computing. These ideas have affected compiler design, analysis approaches, project management techniques, user interface design, deployment …
A new garbage collection algorithm for distributed object systems, called DMOS (Distributed. Mature Object Space), is presented. It is derived from two previous algorithms, MOS (Mature Object Space), sometimes called the train algorithm, and PMOS (Persistent Mature Object Space).…
Squeak is an open, highly-portable Smalltalk implementation whose virtual machine is written entirely in Smalltalk, making it easy to. debug, analyze, and change. To achieve practical performance, a translator produces an equivalent C program whose performance is comparable to co…
A new visual notation is proposed for precisely expressing constraints on object-oriented models, as an alternative to mathematical logic notation used in methods such as Syntropy and Catalysis. The notation is potentially intuitive, expressive, integrates well with existing visu…
Object relationships in modem software systems are becoming increasingly numerous and complex. Programmers who try to find violations of such relationships need new tools that allow them to explore objects in a large system more efficiently. Many existing debuggers present only a…
Standard object-oriented languages do not provide language support for modeling changing collections of interdependent objects. We propose that R++, an integration of the rule and objectoriented paradigms, provides a mechanism for easily implementing such models. R++ extends C++ …
This paper explains how patterns can be used to describe the implementation of other patterns. It is demonstrated how certain design patterns can describe their own design. This is a fundamental reflexive relationship in pattern relationships. The process of assembling patterns b…
Two important problems of object-oriented reuse are the propagation of design and implementation specifics of the base software to the inheritors, and the protection of the inheritors against changes in the base software. In this paper, we argue that the simple inheritance rules …
The growing maturity of ODBMS technology is causing many enterprises to consider migrating relational databases to ODBIMS's. While data remapping is relatively straight-forward in most cases, greater challenges lie in economically and non-invasively adapting legacy application so…
In this paper, we present a technique to analyze and measure the reusability of object-oriented (OO) designs. The metrics can be incorporated into a design/development environment, so that reusability measurements, analysis, and improvements can be part of "business as usual" for…
This panel will lay the foundation for understanding the needs of Large Systems so that OO practitioners can:• appreciate the problems faced;• understand the issues involved; and• re-orient the approaches to provide a viable solution when participating in similar efforts.Specific…
Software design patterns are the core abstractions from successful recurring problem solutions in software design. Composite design patterns are the core abstractions from successful recurring frameworks. A composite design pattern is a pattern that is best described as the compo…
Class libraries are generally designed with an emphasis on versatility and extensibility. Applications that use a library typically exercise only part of the library's functionality. As a result, objects created by the application may contain unused members. We present an algorit…
A type inclusion test determines whether one type is a subtype of another. Efficient type testing techniques exist for single subtyping, but not for languages with multiple subtyping. To date, the fast constant-time technique relies on a binary matrix encoding of the subtype rela…
Designing and implementing generic software components is encouraged by languages such as object-oriented ones and commonly advocated in most application areas. Generic software components have many advantages among which the most important is reusability. However, it comes at a …