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Weaving Temporal and Reliability Aspects into a Schema Tapestry
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| Citations: | 3 - 1 self |
BibTeX
@MISC{Dyreson_weavingtemporal,
author = {Curtis Dyreson and Richard T. Snodgrass and Faiz Currim and Sabah Currim and Shailesh Joshi},
title = {Weaving Temporal and Reliability Aspects into a Schema Tapestry},
year = {}
}
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Abstract
Abstract. In aspect-oriented programming (AOP) a cross-cutting concern is implemented in an aspect. An aspect weaver blends code from the aspect into a program’s code at programmer-specified cut points, yielding an aspectenhanced program. In this paper we apply some of the concepts from the AOP paradigm to data. Like code, data also has cross-cutting concerns such as versioning, security, privacy, and reliability. We propose modeling a cross-cutting data concern as a schema aspect. A schema aspect describes the structure of the metadata in the cross-cutting concern, identifies the types of data elements that can be wrapped with metadata, i.e., the cut points, and provides some simple constraints on the use of the metadata. Several schema aspects can be applied to a single data collection, though in this paper we focus on just two aspects: a reliability aspect and a temporal aspect. We show how to weave the schema for these two aspects together with the schema for the data into a single, unified schema that we call a schema tapestry. The tapestry guides the construction, interpretation, and validation of an aspect-enhanced data collection. 1
Keyphrases
reliability aspect schema tapestry cross-cutting concern schema aspect simple constraint program code aspectenhanced program cut point aspect-enhanced data collection single data collection temporal aspect data element aop paradigm aspect weaver blend code aspect-oriented programming several schema aspect programmer-specified cut point cross-cutting data concern unified schema
