the study on component composition based on extend uml 2 component diagrams

the study on component composition based on extend uml 2 component diagrams

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时间:2018-07-10

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1、TheStudyonComponentCompositionbasedonExtendUML2ComponentDiagramsAbstract:Inordertopushthecompositionofcomponentsafurtherstepforward,thecomponentlanguageCompJavaintroducesstructuralunitsofcomponentcodethatmayparticipateviatheintermediaryofplugsinthecompositionprocess

2、.AnextensionofUML2componentdiagramsbythenewfeatureshasprovenveryvaluableinordertovisualizethecompositionalstructureofcomponentsforabetterunderstandingandcommunication.ThetransformationofaCompJavacomponentdiagramintotheCompJavalanguageisstraightforwardandpreciselydef

3、ined.Keywords:componentcomposition,UML21IntroductionUnifiedModelingLanguage(UML)isastandardizedgeneral-purposemodelinglanguageinthefieldofobject-orientedsoftwareengineering.Thestandardismanaged,andwascreated,bythe4ObjectManagementGroup.ItwasfirstaddedtothelistofOMGa

4、doptedtechnologiesin1997,andhassincebecometheindustrystandardformodelingsoftware-intensivesystems.UMLincludesasetofgraphicnotationtechniquestocreatevisualmodelsofobject-orientedsoftware-intensivesystems.MLhasmaturedsignificantlysinceUML1.1.Severalminorrevisions(UML1

5、.3,1.4,and1.5)fixedshortcomingsandbugswiththefirstversionofUML,followedbytheUML2.0majorrevisionthatwasadoptedbytheOMGin2005.TherearefourpartstotheUML2specification:(1)TheSuperstructurethatdefinesthenotationandsemanticsfordiagramsandtheirmodelelements.(2)TheInfrastru

6、cturethatdefinesthecoremetamodelonwhichtheSuperstructureisbased.(3)TheObjectConstraintLanguage(OCL)fordefiningrulesformodelelements.(4)TheUMLDiagramInterchangethatdefineshowUML2diagramlayoutsareexchanged.Thecurrentversionsofthesestandardsfollow:UMLSuperstructurevers

7、ion2.4.1,UML4Infrastructureversion2.4.1,OCLversion2.3.1,andUMLDiagramInterchangeversion1.0.AlthoughmanyUMLtoolssupportsomeofthenewfeaturesofUML2,theOMGprovidesnotestsuitetoobjectivelytestcompliancewithitsspecifications.1.1ThebasicUMLmodelInordertosupportdifferentper

8、spectiveanddescribethesoftwaresystem,fromthedemandanalysistothesoftwaredevelopmentprocess,UMLdefines5classesofgraphstorepresent:(1)usecase

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