基于UML構建面向?qū)ο笙到y(tǒng)的依賴性研究.pdf

1、重慶大學碩士學位論文基于UML構建面向?qū)ο笙到y(tǒng)的依賴性研究姓名：胡順仁申請學位級別：碩士專業(yè)：計算機軟件指導教師：王錚20020514重慶大學碩士論文英文摘要AbstractDependencyisextensivelyusedinobject—orientedsystemTheresearchesofdependencyhavebeenbeingpaidcloseattentiontobysoftwareengineeringThou

2、ghalotofachievements，whichmainlybasedontheoryhavebeenobtained，manyproblemsremainunsolvedfortheircomplexnatureOnthebasisofinvestigationontherelatedliteratureofdependencyathomeandabroad，primarilyaccordingtoclass，thispaperp

3、utsemphasisonstudyingthereasonandmechanismthatcausingdependency’formaldefinitionsubdivisionandmeasurementofdependencybycombiningmainstreammodelingUMLThemainworksandconclusioninthispaperare船follows：(1)Accordingtoelementar

4、yfeatureofobject—orientedsystem，thispaperanalysesthebasicreasonandmechanismtocausedependencyThereasonisencapsulation，inheritanceandpolymorphismandthemechanismisfunctiondependencyinheritance，globalvariable，usingAPI，client

5、／servermessageandclassdefininginstancevariable(2)Accordingtothefeatureofclass，thispaperdefinesstrictclassdependencyandfractionatesdependencyintodatadependencyandmethoddependency’andprovesstrictanddescribesthetwoconceptsT

6、hissubdivisiondescribesvirtuallytheclassdependencycarefullythenshowcharactersofclassdependency：neitherreflexivenornonreflexive，neithersymmetricnornonsymmetric，andnontransitive(3)Theclassdependencyhasbeenmeasureinreasonfr

7、omtwoclassestoseveralclasses，andprovidedtheseterms：dependingmetrics，dependedmetrics，absolutedependingmetrics，dependedmetrics，relativedependingmetricsandrelativedependedmetrics，thenaffirmingclasssize(4)Combingresearchconc

8、lusionwithclassdiagramofUML，transformingclassdiagramintodirectdependencegraph，constructingclasstestingdependenceaggregate，thenreducingregressiontestinginstanceThealgorithmictimeandspacecomplexityareO(n2)(5)Combingpackage