Towards a pattern language for adaptive object models

Welicki, León; Yoder, Joseph W.; Wirfs-Brock, Rebecca; Johnson, Ralph E.

doi:10.1145/1297846.1297888

Cited by 15 publications

(3 citation statements)

References 2 publications

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“…This section aims to present these main patterns that are important to understand how an AOM application works. A complete set of patterns to create an AOM Pattern Language is proposed on [15].…”

Section: A Adaptive Object Modelsmentioning

confidence: 99%

A Model to Enable the Reuse of Metadata-Based Frameworks in Adaptive Object Model Architectures

et al. 2021

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The Adaptive Object Model (AOM) is an architectural style in which domain entity types are represented as instances that can be changed at runtime. It can be used to achieve higher flexibility in domain classes. Due to AOM entities having a distinct structure, they are not compatible with most popular frameworks, especially those that use reflection and code annotations. Objective: To solve such limitations, this work aims to propose a model that enables the reuse of frameworks designed for classic object-oriented domain models in an AOM application. Methods: The proposed model uses dynamically-generated adapters for AOM entities that encapsulate them in a class with the format expected by the frameworks. A reference implementation was developed in the Esfinge AOM RoleMapper framework to evaluate the viability of the proposed model. Initially, to evaluate the solution feasibility, a case study was carried out using the Hibernate framework. Further, an experiment was conducted to assess how the participants perceived the framework functionality reuse through the proposed model. Results: The feasibility study revealed that the solution could be applied in a complex setting for the chosen object-relational mapping frame. It raised some difficulties that can be addressed in future studies. In the experiment, the development time did not present a significant difference compared to the competing approach. Despite the considerable learning curve, most participants considered that the proposed approach has more advantages than the alternative. Conclusion: Based on the evaluations, we can conclude that the proposed model can be successfully employed to use AOM entities with frameworks that were not designed for AOM applications. The possibility of reusing existing frameworks can reduce the effort required to adopt an AOM architecture and, consequently, be a facilitator in implementing more flexible and adaptive approaches.

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Section: A Adaptive Object Modelsmentioning

confidence: 99%

A Model to Enable the Reuse of Metadata-Based Frameworks in Adaptive Object Model Architectures

et al. 2021

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“…It supports turning into meta-data level M1 and the levels above it, so that the different layers may be handled by the system at runtime. Figure 3 shows the three patterns here presented, how they relate with each other, and how they relate to TypeSquare, extending the pattern language for adaptive object-models [4,7,11,12,17,18]. It is worth noting that the patterns in this language are classified according to more categories in addition to the architectural category, to which the patterns presented in this paper belong, such as structural, behavioral, architectural, interaction, creational, evolution, construction and support [4].…”

Section: Pattern Thumbnailsmentioning

confidence: 99%

Core patterns of object-oriented meta-architectures

Ferreira¹,

Correia²,

Yoder³

et al. 2010

Proceedings of the 17th Conference on Pattern Languages of Programs

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Meta-architectures, also known as reflective architectures, are a specific type of software architectures that are able to inspect their own structure and behavior, and dynamically adapt at runtime, thus responding to new user requirements or changes in their environment. In object-oriented programming, these architectures rely on a small set of core concepts that provide them the means to describe themselves, thus becoming "closed". These three core patterns can be found in almost every object-oriented meta-architecture: Everything is a Thing, Closing the Roof, and Bootstrapping. By delving into the inherent problems they try to solve, and the forces that shape those problems, a developer will improve his ability to adequately make architectural and design choices to build and evolve systems with high-adaptability needs.

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“…AOM BUILDER is one Creational pattern that is part of a pattern language for AOM systems [WYWJ07]. Figure 1 shows the context of this pattern with other creational patterns.…”

Section: Introductionmentioning

confidence: 99%

Adaptive object-model builder

Welicki

Yoder²,

Wirfs-Brock³

2009

Proceedings of the 16th Conference on Pattern Languages of Programs

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An Adaptive Object-Model system represents user-defined classes, attributes, relationships, and behavior as metadata. This paper presents the Adaptive Object-Model Builder pattern that is used to construct AOM entities. An AOM Builder reads an externally stored build description to construct a build process. This process is then executed to construct a properly initialized AOM entity. Since an AOM Builder is driven by metadata descriptions of entities and their build processes, a single generic AOM Builder implementation can construct different entity types.

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Towards a pattern language for adaptive object models

Cited by 15 publications

References 2 publications

A Model to Enable the Reuse of Metadata-Based Frameworks in Adaptive Object Model Architectures

A Model to Enable the Reuse of Metadata-Based Frameworks in Adaptive Object Model Architectures

Core patterns of object-oriented meta-architectures

Adaptive object-model builder

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