Citation Context

...atforms.s4. RELATED WORKsVinoski [18] and Stuckenholz [17] provide rather bleak overviewssof the state of the art in middleware versioning.sWithin the realmsof web services, Ponnekanti and Fox’s work =-=[15, 14]-=- is the closeststo ours, proposing to chain interface adapters to achieve compatibility.sHowever, they focus on using third party adapters tosmatch clients with independently developed web services ra...

Citation Context

...actions without depending on the services’ interfaces. The well-known adaptor pattern has been used in several approaches for bridging the semantic gap between a service client and a service provider =-=[10,11,13,14,15]-=-. In the context of ForeverSOA, the challenging issue is to provide means for dynamically upgrading the adaptors used on the client application side according to the application evolving requirements ...

Citation Context

...tions that are mapped into alternative concrete services [4], [5], [6]. The second category comprises adapter-based approaches, which deal with existing client applications that use concrete services =-=[7]-=-, [8], [9], [10], [11], [12], [13]. The basic concept in this case is to derive a mapping between the target service that should be substituted and a substitute service that offers similar functionali...

Citation Context

...fforts, in particular, in pervasivescomputing environments, are the exploitation of semantic service descriptions [14]s[15] [16] and opportunistic combination/chaining of component services [17] [18]s=-=[19]-=- beyond the previous, naive I/O matching scheme. Other research on the composition programming model and methodology [15] [20] is also worthy of notice.sOur work differs in that it addresses the need ...

Citation Context

... way to adapt an unusable interface into a usable one is to use a singe adapter to convert from one to the other. This can easily be extended so that multiple adapters are chained to adapt interfaces =-=[14, 9]-=-, which can reduce the number of interface adapters that are required. However, it is not 1always feasible for an adapter to perfectly convert one interface to another, since interfaces are almost ne...

Citation Context

...aces. In the first category, we have alternative versions of a service that come from the same service provider [15]. In the second category, we have services developed by different service providers =-=[14]-=-. Taking a concrete example, in the RemoteMethods registry we may find various similar services that allow sending SMS messages to mobile phones. SMS-TXT 4 is a service, for which there exist differen...

Citation Context

...atrix associated with an adapter A as depend(A). 3. Web of lossy adapters Existing approaches use only a single interface adapter to adapt a given target interface from one or more source interfaces. =-=[6, 8, 7]-=- These approaches force us to choose among imperfect chains of interface adapters, where one chain might be able to adapt certain methods in the source interface but cannot adapt other methods covered...

Citation Context

... matched by a query specified as: [sensor="camera", room="25", building="Sudikoff"] when Alice is present in room 25 of the Sudikoff building. Interesting work has been reported by Ponnekanti and Fox =-=[8]-=-. Although not exclusive to, but applicable to context discovery, they describe an approach to service interoperability that does not depend on standardised service interfaces. Here, a service is sear...

Citation Context

...m level, the underlying software must be provided with a representation of the data it is able to process. Interoperability is addressed as one key challenge in ubiquitous computing [27], [28], [32], =-=[33]-=-. It is reasonable to provide software components with certain abstractions of the underlying platform, as this allows their use in different 24senvironments. Furthermore, abstraction hides the divers...