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-===== Ambient References =====
-{{ ambientrefs.jpg }}
-Ambient references are a novel remote object reference mechanism. Remote object references are "pointers across the network" and are a frequently recurring abstraction in both distributed OO languages and distributed middleware. Ambient references are designed to refer to objects in [[research:terms:monets|mobile networks]]. What exactly constitutes a mobile network and how it differs from traditional, stationary networks is described [[research:terms:monets|elsewhere]].
-== Motivation ==
-One may wonder why new referencing abstractions are required for mobile networks. In order to motivate the need for new referencing abstractions at the language level, we list a number of desirable properties of remote references for mobile networks which current remote referencing abstractions do not offer:
-  - **Provisional References**: remote references should be able to point to remote objects which are "not yet available" in the network. This is founded on the observation that in [[research:terms:monets|mobile networks]], ambient resources need to be discovered in the environment and will most likely be unavailable most of the time.
-  - **Resilience to Partial Failure**: remote references for mobile networks should be able to tolerate network disconnections because of the volatile connnections hardware phenomenon of mobile networks.
-  - **Transitory Addressing**: remote references in mobile networks should bind to (point to) objects based on what services that object provides, rather than based on a low-level UID, object-id, IP address or MAC address. Such low-level IDs preclude the reference from reconfiguring itself by rebinding to a different object providing the same or equally matching services.
-  - **Group Communication**: in mobile networks, one often wants to communicate with an entire group of objects. To this end, remote references should be introduced that automatically represent a set of (proximate) objects. Messages sent to such references are automatically multicast or broadcast to all objects in the set.
-== Design ==
-Ambient references unify two concepts: they are both a peer-to-peer discovery channel //and// an asynchronous communication channel to a remote object.
-== Example Usage ==
-== Implementation ==
-A detailed explanation of ambient references can be found in [[ftp://prog.vub.ac.be/tech_report/2006/vub-prog-tr-06-07.pdf|this technical report]].
-== Further Reading ==
-Ambient References: Addressing Objects in Mobile Networks. Tom Van Cutsem, Jessie Dedecker, Stijn Mostinckx, Elisa Gonzalez Boix, Theo D'Hondt, Wolfgang De Meuter. In //Technical Report VUB-PROG-TR-06-10, Vrije Universiteit Brussel//, 2006 [ [[http://prog.vub.ac.be/Publications/2006/vub-prog-tr-06-10.pdf|download]] ]

Ambient-Oriented Programming

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