mda a new trend in software development(软件体系结构)new

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1、AintroductiontoMDAWeiHe2004.3.whe6@cs.mcgill.caAgendaBriefIntroductionMDADevelopmentProcessMDAFrameworkAExampleofMDAProcessTransformationsinMDAMDATodayInfluencesIntroductionProposedbyOMGin2000Anewwayofdevelopingsoftwaresystems1.Adevelopmentprocess2.Afr

2、amework3.AsetofstandardsItaimstoallowdeveloperstocreatesystemsentirelywithmodelsMDADevelopmentProcessMDADevelopmentProcessTraditionalsoftwaredevelopmentlifecyclerequirementsMostlytextanalysisDiagramsandtextdesignDiagramsandtextimplementationcodetesting

3、codedeploymentMDADevelopmentProcessMDAsoftwaredevelopmentlifecyclerequirementsMostlytextanalysisPIMdesignPSMimplementationcodetestingcodedeploymentMDADevelopmentProcessStep1.BuildPIMStep2.UsetransformationtooltogenerateoneormorePSMfromPIMStep3.Usetrans

4、formationtooltogeneratecodesMDADevelopmentProcessMDABenefits:1.Productivity:developersfocusonbusinesslogicratherthanontechnicaldetails2.Portability:automatedtransformationtoolsavailable3.MaintenanceandDocumentation:MDAFrameworkMDAFrameworkMarketingModl

5、eEngineeringModleTPIMTTTPSMPSMPSMCODECODECODEMDAFrameworkBuildingblocksinMDA1.Models1)PlatformIndependentModel(PIM)2)PlatformSpecificModel(PSM)3)SourceCode2.Transformations1)PIMtoPSM2)PSMtocodeMDAFrameworkBuildingblocksinMDA3.MDAspecifications1)Oneormo

6、restandard,well-definedlanguagestowritePIM2)Oneormorestandard,well-definedlanguagestowritePSM3)AlanguagetowritethedefinitionoftransformationsbetweenmodelsAwell-definedlanguageisalanguagewithwell-definedsyntaxandsemantics,whichissuitableforautomatedinte

7、rpretationbyacomputerMDAFrameworkBuildingblocksinMDA4.ToolsthatimplementtheexecutionofthetransformationsAexampleofMDAprocessAexampleofMDABackground:develpeanorderingsystemforabreakfastserviceshopImplementation:astandardweb-basedthree-tierapplication1.A

8、database2.AmiddletierEnterpriseJavaBean3.Userinterface:JSPAexampleofMDAPIM(aclassdiagram)AexampleofMDAPIMtoPSMtransformationsPIMtoRelationalPSMwhatthetransformationtoolshoulddo?1>howthedatatypesaremapped2>classes―›tablesattributes―›fiel