Context programming in object-oriented environments

Details Context programming in object-oriented environments Context programming in object-oriented environments

2006-12-05

2006-12-05

Dam, Tuan (Department: 2192)

Data processing: software development, installation, and managem

Software program development tool

Managing software components

C717S127000, C717S170000, C707S793000

Reexamination Certificate

active

07146603

ABSTRACT:
An object-oriented context programming system is formed with data objects. Each data object defines a class of object which will typically have at least one attribute. This attribute is stored in the database with an indication of the effective context, e.g., time, of the attribute. Any change in attribute, e.g., over time, is also stored in the data object along with an indication the context in which it is effective. In a temporal context, it would be saved with the time of effect of the change in the attribute. Methods associated with the class, and which the class can carry out, have an argument which includes the context, which could be time. These methods are also stored in the database with an indication of the effective context (e.g., time) of the method. Any change in the method is stored in the data base along with an indication of the context in which it is effective, e.g., the time of effect of a change in the method in a temporal context. Execution of the method with a particular context argument utilizes the attributes of the effected data objects and the particular method which were in effect for the context. The context can be a particular time specified or a point of view or vantage point.

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Takayuki Suzuki et al.,Development and Performance Analysis of a Temporal Persistent Object Store POST/C++,Microsoft Internet Explorer Dec. 11, 2000.
A. Tansel et al.,Temporal Databases,Benjamin/Cummings Publishing Company, Inc. 1993.

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