BORIS Theses

BORIS Theses
Bern Open Repository and Information System

Object-Centric Reflection: Unifying Reflection and Bringing It Back to Objects

Ressia, Jorge Luis (2012). Object-Centric Reflection: Unifying Reflection and Bringing It Back to Objects. (Thesis). Universität Bern, Bern

ressia-phd.pdf - Thesis
Available under License Creative Commons: Attribution-Share Alike (CC-BY-SA 4.0).

Download (1MB) | Preview


Reflective applications are able to query and manipulate the structure and behavior of a running system. This is essential for highly dynamic software that needs to interact with objects whose structure and behavior are not known when the application is written. Software analysis tools, like debuggers, are a typical example. Oddly, although reflection essentially concerns run-time entities, reflective applications tend to focus on static abstractions, like classes and methods, rather than objects. This is phenomenon we call the object paradox, which makes developers less effective by drawing their attention away from run-time objects. To counteract this phenomenon, we propose a purely object-centric approach to reflection. Reflective mechanisms provide object-specific capabilities as another feature. Object-centric reflection proposes to turn this around and put object-specific capabilities as the central reflection mechanism. This change in the reflection architecture allows a unification of various reflection mechanisms and a solution to the object paradox. We introduce Bifr\"ost, an object-centric reflective system based on first-class meta-objects. Through a series of practical examples we demonstrate how object-centric reflection mitigates the object paradox by avoiding the need to reflect on static abstractions. We survey existing approaches to reflection to establish key requirements in the domain, and we show that an object-centric approach simplifies the meta-level and allows a unification of the reflection field. We demonstrate how development itself is enhanced with this new approach: talents are dynamically composable units of reuse, and object-centric debugging prevents the object paradox when debugging. We also demonstrate how software analysis is benefited by object-centric reflection with Chameleon, a framework for building object-centric analysis tools and MetaSpy, a domain-specific profiler

Item Type: Thesis
Dissertation Type: Single
Date of Defense: 2012
Subjects: 000 Computer science, knowledge & systems
500 Science > 510 Mathematics
Institute / Center: 08 Faculty of Science > Institute of Computer Science (INF)
08 Faculty of Science > Institute of Computer Science (INF) > Software Composition Group (SCG)
Depositing User: Admin importFromBoris
Date Deposited: 25 Jan 2019 13:00
Last Modified: 07 Feb 2019 10:47

Actions (login required)

View Item View Item