This group will serve as a focal point for discussions, examples, and projects intended to help people utilize the object-oriented language features which became available in OE10.1. The intention is to:
1) Develop established object-oriented design principles in a way that is consistent with a 4GL;
2) Provide OO-based contributions to OERA-compliant architectures; and
3) Assist in the utilization of OO techniques in the context of existing procedural code.
Contributions to this purpose will include white paper discussions, code fragments illustrating techniques, and complete model components to use in building applications.
Hungarian Notation for OOABL
Wed, 2006-10-04 20:24 — tamhasThe use of any form of Hungarian Notation is a topic certain to produce intense opinions, whether pro or con. Since CI intends to use a form of Hungarian Notation in its published examples and foundation classes, it seems worthwhile to review the reasons for this choice and the specifics of the standards that will be used.
Exception and Condition Handling Classes
Wed, 2006-10-04 19:31 — tamhasOne of the problems faced by ABL programmers for many years is the lack of a true exception handling mechanism in the language. By “exception handling”, we mean a mechanism by which a program encounters an error or unexpected condition then can communicate up the call stack with the purpose of:
1. Signaling that requested execution has not completed as expected;
2. Communicating any necessary information about the details of why this condition occurred; and
3. Providing a structure such that the condition is “handled” in a graceful fashion at an appropriate level in the code.
Collection and Map Classes for OOABL
Wed, 2006-10-04 19:23 — tamhasIn developing a foundation framework for Object-Oriented ABL, it seems natural to consider creating a set of Collection classes since they have a broad utility in OO design in other languages. It also seems natural to consider imitating the Collection classes in Java since that is a tried and true implementation into which there has been a considerable investment of thought and effort.
Welcome to the OOABL forum!
Wed, 2006-09-13 22:52 — tamhasPlease feel free to make suggestions, requests, contributions.
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