Flexible and maintainable contents activities in ubiquitous environment

In future ubiquitous environments, contents (data, movie, text, graphics, etc.) will be more sophisticated and context-aware so that they can enrich user experience. We have proposed the Active Contents (AC) framework, which is based on contents encapsulation with program and aspect definition to allow contents to behave actively. AC can be seen as a software component with several viewpoints of contributors (planner, designer, programmer, etc.). The problem is about maintainability of AC which is modified by the contributors based on their own viewpoints. In this position paper, we propose a mechanism to allow such contributors to modify AC with context-aware aspect. In our mechanism, based on location binding analysis for AC, parallel executions to be performed at a separate location are detected and automatically executed using workflow-aware communication.