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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Yinliang Zhao Changpeng Zhu Bo Han Qinghua Zeng |
| Copyright Year | 2012 |
| Abstract | Context-awareness has become increasingly important for mobile and ubiquitous computing. However, current mainstream object-oriented languages provide little explicit support for context-awareness. Object composition and delegation are often advocated as a flexible approach to represent dynamic behavior of objects with some dynamic behavior. In this paper, we propose Dynamic Behavior Adaptation Featherweight Java (DBAFJ), an extension of Featherweight Java with object composition and delegation, to support for context-awareness. In DBAFJ, each layer consists of a set of layered classes and a predicate method. The former defines a set of context-specific methods, and the latter describes a specific context. Instances of layered classes are created by the runtime system and are specialized in object composition that is context-based. Objects can be adapted by object composition at runtime to obtain new context-specific methods, and delegation with a static type discipline ensures that these new methods are correctly executed. Therefore, DBAFJ supports that the program dynamically adjust its behavior to the current execution context. The sound type system of DBAFJ assures that no "message-not-understood" errors occur at run-time. |
| Starting Page | 25 |
| Ending Page | 32 |
| File Size | 464749 |
| Page Count | 8 |
| File Format | |
| ISBN | 9781467348737 |
| DOI | 10.1109/CIT.2012.232 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-10-27 |
| Publisher Place | China |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Context Java Runtime Featherweight Java Semantics Syntactics Programming Search problems Context-Oriented Programming Type Systems Object Composition Delegation |
| Content Type | Text |
| Resource Type | Article |
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