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1、CentrumvoorWiskundeenInformaticaSoftwareEngineeringSoftwareENgineeringAchannel-basedcoordinationmodelforcomponentsF.Arbab,F.S.deBoer,M.M.Bonsangue,J.V.GuillenScholtenREPORTSEN-R0127DECEMBER31,2001CWIistheNationalResearchInstituteforMathematicsandComputerScie
2、nce.ItissponsoredbytheNetherlandsOrganizationforScientificResearch(NWO).CWIisafoundingmemberofERCIM,theEuropeanResearchConsortiumforInformaticsandMathematics.CWI'sresearchhasatheme-orientedstructureandisgroupedintofourclusters.Listedbelowarethenamesoftheclus
3、tersandinparenthesestheiracronyms.Probability,NetworksandAlgorithms(PNA)SoftwareEngineering(SEN)Modelling,AnalysisandSimulation(MAS)InformationSystems(INS)Copyright©2001,StichtingCentrumvoorWiskundeenInformaticaP.O.Box94079,1090GBAmsterdam(NL)Kruislaan413,10
4、98SJAmsterdam(NL)Telephone+31205929333Telefax+31205924199ISSN1386-369XAChannel-basedCoordinationodelforComponents1FarhadArbab1FrankS.deBoer2ar
ello.Bonsangue1uanV.GuillenS
holten1CW..Box94079,1090GBAmsterdam,TheetherlandsE-mails:farhad
wi.nl,frb
wi
5、.nl,andjuan
wi.nl2ACS,eidenUniversity..Box9512,2300RAeiden,TheetherlandsE-mail:mar
ellolia
s.nlABSTRACTnthispaperwepresenta
oordinationmodelfor
omponent-basedsoftwaresystemsbasedonthenotionofmobilehannels,anddes
ribeitsimplementationintheavalangua
6、ge.Channelsallowanonymous,andpoint-to-point
ommuni
ationamong
omponents,whilemobilityallowsdynami
re
on gurationofhannel
onne
tionsinasystem.Thismodelsupportsdynami
distributedsystemswhere
omponents
anbemobile.tprovidesaneÆ
ientwayofintera
tionamong
omponen
7、ts.Furthermore,ourmodelprovidesa
learseparationbetweenthe
omputationalpartandthe
oordinationpartofasystem,allowingthedevelopmentanddes
riptionofthe
oordinationstru
tureofasystemtobedoneinatransparentway.urdes
riptionoftheavaimplementationofthis
oordination
8、modeldemonstratesthatitisself-
ontainedenoughfordeveloping
omponent-basedsystems.However,ifdesired,ourmodel
anbeusedasabasistoextendothermodelsthatfo
usonotheraspe
tsof
omponentsthatarelessrelat
