异构的动态分布式实时系统的面向方面的中间件技术

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1、广东工业大学硕士学位论文异构的动态分布式实时系统的面向方面的中间件技术姓名：尹雁青申请学位级别：硕士专业：计算机应用技术指导教师：张立臣20090526广东T业大学硕卜论文关键词：面向方面中间件；公共对象请求代理体系结构；Java消息服务；模型驱动模型；平台无关模型；平台相关模型Ⅱ目录====!==!=!=!!!自!!!!

2、!==々==j==!!!=!=!=!!==]—--{2=g!E====!======2===!===!==!!!!=ABSTRACTWiththedevelopmentofinfor

3、mationtechnology,allsignificantrevolutionhastakenplaceincomputationmodel．ItisaninevitabletrendforcomputingdevelopmentfromdistributedcomputingtoGridcomputingandcloudcomputing。DuetotheinherentcomplexityofHeterogeneousDynamicEnvironments，itimposesthegreatch

4、allengestothetraditionalmiddlewareinfrastructure．Itneedsurgentlyakindofnewmiddlewareinfrastructurethatadaptstoservicesandthestatusesarecontinuouslychangingacrossdifferentplatforms．Thedistributedandreal．timemiddlewareneedstosupportmoreandmorenewplatforms，

5、suchasmobilecomputing，networkdevices，controlsystem，security-criticalsystems，etc．Accordingtothechangesofrun·timecontexts，themiddlewareitselfcanadjustandreconfigurethestructuresandbehaviortoprovidetheapplicationthereal—timeandreliableservices．Conventionall

6、y,middlewaresystemsareimplementedbytakingaccountofalltherequirementstogether．Thearchitecture，designedinthisway,isincapableofadequatelydealingwith’'change”intime(functionalevolution)andspace(functionaldiversification)，becauseofthehighconcerndensityforeach

7、architecturalelement．Tosimplifythedesignofthemiddlewarearchitecture，therequirementsofamiddlewaresystemshouldbecategorizedasintrinsicandextrinsicproperites．weusetheterm’’intrinsic”tocharacterizemiddlewarearchitecturalelememsthatareessential，invariant，andr

8、epeatedlyuseddespitethevariationsoftheapplicationdomains．Contrarily,weusetheterm’’extrinsic’’todenoteelementsthatarevulnerabletorefinememsorcanbecomeoptionalwhentheapplicationdomainschange．Thisthesisproposesanewparadigm，Modelware，forreducingthecomplexity

9、ofmiddlewaredesignandimplementation．TheModelarewareapproachdistinguishesbetweentheCOrearchitecturedesignandthecrosscuttingarchitecturalelements．Thecrosscuttingelementsarescatteredaroundtheentiremiddlewarecodebase，Cannotbee