2,246 papers · page 95 of 113
The OO7 Benchmark was first published in 1993, and has since found a home in the marketing literature of various object-oriented database management system (OODBMS) vendors. The OO7 Benchmark (as published) was the initial result of an ongoing OODBMS performance evaluation effort…
Two major obstacles hindering the wider acceptance of multi-methods are concerns over the lack of encapsulation and modularity and the absence of static typechecking in existing multi-method-based languages. This paper addresses both of these problems. We present a polynomial-tim…
This paper reports on the evolution of metaclass programming in SOM (the IBM System Object Model). Initially, SOM's use of explicit metaclasses introduced metaclass incompatibilities. This was cured by having SOM dynamically derive an appropriate metaclass by interpreting the “me…
Previous studies concerning multiple inheritance convinced us that a better analysis of conflict resolution mechanisms was necessary. In [DHHM92], we stated properties that a sound mechanism has to respect. Among them, a monotonicity principle plays a critical role, ensuring that…
Important strides toward developing expressive yet semantically sound type systems for object-oriented programming languages have recently been made by Cook, Bruce, Mitchell, and others. This paper focusses on how the theoretical work using F-bounded quantification may be brought…
In SOM, the IBM System Object Model, a class is a run-time object that defines the behavior of its instances by creating an instance method table. Because classes are objects, their behavior is defined by other classes (called metaclasses). For example, a “Before/After Metaclass”…
article Free Access Share on How do teams shape objects?—How do objects shape teams? Authors: Steven Fraser Bell-Northern Research Ltd., Ottawa, Ontario, Canada Bell-Northern Research Ltd., Ottawa, Ontario, CanadaView Profile , Kent Beck FirstClass Software FirstClass SoftwareVie…
This paper discusses an approach for developing dynamically tailorable hypermedia systems in an object-oriented environment. The approach is aimed at making applications developed in compiled languages like Beta and C++ tailorable at run-time. The approach is based on use of: 1) …
The purpose of the Guide project is to explore the use of shared objects for communication in a distributed system, especially for applications that require cooperative work. Since 1986, two prototypes have been implemented respectively on top of Unix (Guide-1) and Mach 3.0 (Guid…
The panel will discuss emerging “industrial” solutions that help programmers to develop distributed and client/server applications based on objects supporting so-called openness and heterogeneity.
Programming systems should be both responsive (to support rapid development) and efficient (to complete computations quickly). Pure object-oriented languages are harder to implement efficiently since they need optimization to achieve good performance. Unfortunately, optimization …
We have succeeded in streamlining the product development cycle by incorporating object-oriented technology into the requirements definition phase. We have developed a general format, supporting tools and a methodology for describing requirements in an object-oriented fashion. We…
Scientific applications often manipulate very large sets of persistent data. Over the past decade, advances in disk storage device performance have consistently been outpaced by advances in the performance of the rest of the computer system. As a result, many scientific applicati…
A number of attempts have been made to obtain type systems for object-oriented programming. The view that lies common is “object-oriented programming = λ-calculus + record.” Based on an analogous view “concurrent object-oriented programming = concurrent calculus + record,” we dev…
Objects model phenomena and a phenomenon is usually a component. Information characterizing a component is encapsulated and accessible only by its methods. The relations between components are modeled explicitly by means of associations or references. A relation is also a phenome…
Constraint Imperative Programming (CIP) languages integrate declarative constraints with imperative state and destructive assignment, yielding a powerful new programming paradigm. However, CIP languages are difficult to implement efficiently due to complex interactions between th…
For performance reasons, client applications often need to influence the implementation strategies of libraries whose services they use. If an object-oriented library contains multiple service classes customized for different usage patterns, applications can influence service imp…
article Free Access Share on Methodology standards: help or hindrance? Authors: Grady Booch Rational Software Corporation Rational Software CorporationView Profile , Brian Henderson-Sellers University of Technology, Sydney University of Technology, SydneyView Profile , Ivar Jacob…
Two major issues related to storing program information in an OODB are sharing and clustering. The former is important since it prevents the database from consuming excessive disk space, while the latter is crucial, since it keeps clients running without thrashing. In our databas…