Model-driven composition of context-aware web services using ContextUML and aspects

Prezerakos, GN; Tselikas, ND; Cortese, G

dc.contributor.author	Prezerakos, GN	en
dc.contributor.author	Tselikas, ND	en
dc.contributor.author	Cortese, G	en
dc.date.accessioned	2014-03-01T02:51:08Z
dc.date.available	2014-03-01T02:51:08Z
dc.date.issued	2007	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/35385
dc.subject.other	BASIC (programming language)	en
dc.subject.other	Codes (standards)	en
dc.subject.other	Fuzzy logic	en
dc.subject.other	Information services	en
dc.subject.other	Light amplifiers	en
dc.subject.other	Process design	en
dc.subject.other	Process engineering	en
dc.subject.other	Separation	en
dc.subject.other	Systems analysis	en
dc.subject.other	Technology	en
dc.subject.other	Web services	en
dc.subject.other	World Wide Web	en
dc.subject.other	Aspect Oriented Programming (AOP)	en
dc.subject.other	code modules	en
dc.subject.other	Composite services	en
dc.subject.other	Context awareness (CA)	en
dc.subject.other	Context-aware	en
dc.subject.other	Context-dependent	en
dc.subject.other	core functionality	en
dc.subject.other	Ease-of-use	en
dc.subject.other	End user experience	en
dc.subject.other	End users	en
dc.subject.other	In order	en
dc.subject.other	international conferences	en
dc.subject.other	Meta modelling	en
dc.subject.other	Model driven approach	en
dc.subject.other	Model-driven	en
dc.subject.other	Personalization	en
dc.subject.other	Separation of concerns	en
dc.subject.other	service modeling	en
dc.subject.other	Service oriented architectures (SOAs)	en
dc.subject.other	Service provider (SP)	en
dc.subject.other	Source coding	en
dc.subject.other	Tightly coupled	en
dc.subject.other	Transition (Jel Classifications:E52 ,E41 ,E31)	en
dc.subject.other	User-centric	en
dc.subject.other	Web Services technologies	en
dc.subject.other	Work-in-progress (WIP)	en
dc.subject.other	Codes (symbols)	en
dc.title	Model-driven composition of context-aware web services using ContextUML and aspects	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1109/ICWS.2007.123	en
heal.identifier.secondary	http://dx.doi.org/10.1109/ICWS.2007.123	en
heal.identifier.secondary	4279615	en
heal.publicationDate	2007	en
heal.abstract	Service Oriented Architectures (SOAs) are constantly gaining ground for the provision of business to business as well as user-centric services, mainly in the form of Web Services technology. SOAs enable service providers to design and deploy new,composite service offerings out of existing component services. In order to match end-user expectations with respect to personalization and ease of use, these services should be designed in a manner that allows them to exhibit a certain level of context-awareness which is a basic element towards a richer end-user experience. However, in the majority of such services, context-handling is still tightly coupled with the core functionality of the service, resulting in a design which is difficult to implement and maintain. The paper proposes the decoupling of core service logic from context-related functionality by adopting a Model-driven approach based on a modified version of the ContextUML metamodel. Core service logic and context handling are treated as separate concerns at the modeling level as well as in the resulting source code where Aspect Oriented Programming (AOP) encapsulates context-dependent behavior in discrete code modules. The design of a restaurant finder service is used to portray the modified ContextUML metamodel and the service modeling process which is covered in full. Respective code snippets belonging to the executable version of the service (part of work in progress) are also provided, illustrating the transition from model to code and the resulting separation of concerns. © 2007 IEEE.	en
heal.journalName	Proceedings - 2007 IEEE International Conference on Web Services, ICWS 2007	en
dc.identifier.doi	10.1109/ICWS.2007.123	en
dc.identifier.spage	320	en
dc.identifier.epage	329	en