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1、1外文文獻(xiàn)：ServiceientedarchitecturesfenterpriseintegrationWiththebroadacceptancepopularityofXMLWebservicesasaEAIasastrategicremodelingofbusinessinfrastructureplatfmstructureitshardtosayhowtheserespectivetrendsaffectedeachoth

2、erastheyemerged.XMLOnecouldarguethattheEAIinitiativewasrejuvenatedwiththeinfusionofenabledtechnologiesserviceientedarchitecturesastheintroductionofthesecomplementaryplatfmsresultedinanoverhaulofEAIarchitectures.Asaresult

3、thequalitysophisticationofEAIproductshasneverbeenbetter.OntheotherhthemomentumbehindtheEAItrendcouldverywellhavebeenaespeciallytoWebservices.TheincreasmajcontributtothepopularityofXMLespeciallytoWebservices.Theincreasing

4、needtoreducethecostsofintegratingdisparateenvironmentsledtotheubiquitousrequirementfastarddatasharingplatfmindependentoftiestovendsprovidedastarddatatransptwhichempoweredWebexistingtechnologies.XMLserviceswiththeabilityt

5、oeffectivelyabstractproprietaryplatfmsinsupptofutilizingthistransptstardtocommunicateoverpreviouslynonstardboundaries.reallyitsnotofmuchconsequenceanyme.XMLPerhapsbothclaimsaretrueWebserviceshavebecomekeyenablingtechnolo

6、gieswithinthewldofEAIEAIproductsarebeingbuiltfromthegroundupinsupptoftheXMLWebservicestechnologyplatfms.1.ServicemodelsfenterpriseintegrationarchitecturesTheprocessientednatureofEAIsolutionshasdriventherequirementfservic

7、emodelsthatcanexecutemanagevariousaspectsofenterprisebusiness.EAIdlewareistypicallyinvolvedwiththecreationhostingoftheseserviceshoweveritisnotuncommonfcustomdevelopedintegrationsolutionstoprovidethesetypesofservicesindep

8、endently.Eitherwayanunderstingoftheirrolesunderlyingtechnologiesisvitalwhendesigninganenterpriseintegrationarchitecture.ThefollowingXWIFservicemodelsaredistinctiveofsenriceientedEAIenvironments.Whencodinatingthemessageex

9、changepatterninvolvedintheexecutionofabusiness3providesseparateoperationsfthecreationofacontexttheregistrationfacontexttheionofaprotocol.2.Fundamentalenterpriseintegrationarchitecturecomponents:EAIsolutionscentralizeinte

10、rapplicationcommunicationautomatenewprocesseswiththehelpoftwocecomponents:thebrokercomponentthechestrntionengine.ThefrundamentalfunctionsenabledbythesecomponentsestablishthebasicEAIarchitectureTodemonstratehowthesecompon

11、entsfunctionbasicdataexchangescenariosareprovidedinthissection.EventhoughtheseexainplesmightseemsimplistictheyexplainkeyEAIconcepts.Mostenterpriseintegrationproblemsaresollvedthroughtheuseofthesetwocecomponents.Incidenta

12、llythesetwointegrationscenariosareequallycommoninB2BenvironmentsThebrokercomponentiscapableofperfmingawidevarietyofruntimefunctionssuchas:●sopliisticateddatatransfmations●mergingdocumentsfroindifferentsources●supplementi

13、ngreceiveddatafromoneapplicationwithadditionalinfmationfromanotherTheprimaryfunctionofanintegrationbrokercomponenthoweveristoensurethatdatareceivedfromonesourceisalwaysinthefinatexpectedbythedestinationThefollowingfivest

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