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ID:36544058
大小:2.02 MB
页数:59页
时间:2019-05-11
《异构的动态分布式实时系统的面向方面的中间件技术》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
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
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