Values in Object Systems

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Objects and values are fundamental yet complementary concepts of software system modeling and implementation. However, in the context of large object systems, modeling and implementing value types has received no sufficient attention. Our experiences show that proper understanding of value types can ease programming and improve performance of such systems significantly. In this paper, we discuss the impact of value types on object-oriented system design, implementation, and performance. We discuss several implementation techniques that let us introduce value types into systems implemented in mainstream object-oriented programming languages.


Dirk Bäumer, Dirk Riehle, Wolf Siberski, Carola Lilienthal, Daniel Megert, Karl-Heinz Sylla, and Heinz Züllighoven. Values in Object Systems. Ubilab Technical Report 98.10.1. Zurich, Switzerland: UBS AG, 1998.

The report is available as a PDF file.

Also, if you are interested in a Java-based framework for Value Objects, check out JValue.

Copyright (©) 1998 by the authors and UBS AG. All rights reserved.

Copyright (©) 2007 Dirk Riehle. Some rights reserved. (Creative Commons License BY-NC-SA.) Original Web Location: http://www.riehle.org