服務組合關鍵技術研究.pdf

1、北京工業(yè)大學碩士學位論文服務組合關鍵技術研究姓名：覃海煥申請學位級別：碩士專業(yè)：計算機應用技術指導教師：付鵬斌20090401AbstractAbstractWiththerapiddevelopmentoftheopendistributedcomputing，SOC(ServiceOrientedComputing)andSOA(Service—OrientedArchitecture)becomestheresearchfocus

2、ofsoftwaredomainThecoreideaofSOC&SOAiStoutilizeservicesasfundamentalelementsandtoconstructdistributed，loosecoupledenterprise—levelapplicationsystemondemandItskeytechnologyisWebservicestechnologyandWebservicecompositionte

3、chnologyForrecentyears，therehavebeenincreasingenterprisesandcommercialorganizationsparticipatinginthebuildingofsoftwareasaservice(saas)TheylookforwardtealizingondemandbusinessagilityrequirementbyutilizingWebservicesThere

4、fore，itbecomesaveryimportantpendingproblemthathowtocomposetheWebservicesdistributedinthenetworkseffectivelyastoformapowerfulfunctionalenterpriselevelprocessserviceforachievingthecommercialaimquicklyWebservicecompositiont

5、echnologywillbethekeyofthepushingprogressofSaaSandtheimplementationofSOAHoweverWebservicecompositioniSnotallisolatedtopicbutincludesaserialofhotresearchiSSUCSsuchasWebservicesdiscoveryautomatedWebservicecompositionverifi

6、cationofWebservicecompositionandexecutionA11theseissuesconstructtheresearchframeworkofWebservicecompositionInordertoprovideasolutionforloose—coupledintegrationofinformationsystemsandtherequirementofbusinessagilitythispap

7、erprimarilyfocusesontheresearchesonthedescriptionmodelandlanguageofWebservices，WebservicesdiscoveryWebservicecompositionmethodandtheissuesinWebservicesexecutionThemajorworkandcon：tributiOIlSareasfollows：(1)Researchonthed

8、escriptionlanguageofWebservicecompositionAnXMLProcessDefinitionLanguageSCXPDLbasedonextendedXPDL20，whichsupportsWebservicecompositionisproposedTheextensionincludesaddingdescriptionofactivities’executionmethod，accesslevel

9、ofporttypeandcorrelationsetWiththisextensionSCXPDLcanmodelsynchronous／asynchronousexecutionmethodofWebservices，correlationbetweenmessageandprocessinstanceandtheexposedscopeoftheprocessservices’internaldetailsCompositeser