DOLCLAN – Middleware Support for Peer-to-Peer Distributed Shared Objects

Abstract

Abstract. Contemporary object-oriented programming seeks to enable distributed computing by accessing remote objects using blocking remote procedure calls. This technique, however, suffers from several drawbacks because it relies on the assumption of stable network connections and synchronous method invocations. In this paper we present an approach to support distributed programming, which rely on local object replicas keeping themselves synchronized using an underlying peer-to-peer infrastructure. We have termed our approach Peer-to-peer Distributed Shared Objects (PDSO). This PDSO approach has been implemented in the DOLCLAN framework. An evaluation demonstrates that DOLCLAN can be utilized to create a real distributed collaborative system for ad-hoc collaboration in hospitals, which demonstrates that the approach can support the creation of non-trivial distributed applications for pervasive computing.

C3S: A content sharing middleware for smart spaces

“…We explored pre-existing definitions, such as share object [12]- [15], and mobile object [16]- [18], however, they lacked features of sharing, such as migration, synchronization, and ubiquity, that these kind of application requires.…”

“…DOLCLAN [12], DreamObject [13], and Agilo [15] are middleware and frameworks developed by CSCW researches, which happens to all focus on syncing (mirroring) semantics in stable scenarios. Mica [14] provides a blackboard approach using tuple space that presents only a manual mirror semantic through reading and writing.…”

Enabling Collaborative eHealth through Triplespace Computing

“…The benefits of a distributed, peer-to-peer approach for ad-hoc collaboration in hospitals has been described in [1]. An application of tuplespace technology to the healthcare sector has been acknowledged in [14].…”

“…In this paper we present a semantic coordination model and describe how it can be used to support pervasive access to electronic patient summaries. 1…”