The How-To of Migrating Legacy Applications to Module Systems.pdf

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1、THEHOW-TOOFMIGRATINGLEGACYAPPLICATIONSTOMODULESYSTEMSGeertjanWielenga,JaroslavTulach,AndrzejOlszakAgendaTheneedformodularity[Geertjan]Modularity@NetBeansPlatform[Jaroslav]NDVis:motivationsformodularity[Geertjan]NDVis:frommonolithictomodular[Andrzej]TheneedformodularityGeertjanTheneedformodula

2、rityGreatfordevelopersforusersforbusinessEveryoneusingtheNetBeansRCPinherentlyusesamodularsystemNativeNetBeansmodulesystemOSGiModularity@NetBeansplatformJaroslavNetBeansHistoryDesignedin1997Redesignedin1999CoreModulararchitectureModule1ModuleNOpenAPIsModule2Module5Module3Module4http://p

3、latform.netbeans.orgNetBeansAPIsIssuesModularSystemvs.MonolithicAPIsNotallAPIsareequalcanCopy/canDestroy/canCompile/canDebugNeedtosplitto14modulesKeepcompatibility•Sidenote:PracticalAPIDesignOpenAPIshttp://apidesign.orgCompileTimeSeparationCleandesignvs.realityCyclicdependenciesInsideImpl

4、ementation=>abstract&injectInsignature=>deprecate&replaceAnt&JavacDeprecatedEnumeratefilesEditorincludes/excludesI/OSideNote:ModularizingJavaLoadersWinSysCompilerExplorerFilesystemsNodesActionsExecutionLookuphttp://wiki.apidesign.org/wiki/Modular_Java_SESeparatedJARs14newJARsonclasspathSlo

5、wer“earlymorning”startCacheformodularityGeneratedonfirststartSingleI/O:read40MBcacheDeprecatedSidenote:NetbinoxEditorI/OLoadersWinSysCompilerExplorerFilesystemsNodesActionsExecutionLookuphttp://wiki.apidesign.org/wiki/NetbinoxNDVis:motivationsformodularityGeertjanNDVis=N-DimensionalVisualizat

6、ionOriginallydesignedtosupportneuroscientistsNeuronmodelwith8parameters,6possiblevalueseach8Everyparameterstatewassimulated6or1,679,616simulationsHowdowelookatit?Dimensionalstacking+pixelizationEverypixelmappedtooneormoredatapointsMultipledimensionsmappedtoeachaxisVisualizesmodelparamete

7、rspacesNowexpandedtogeneraldataanalysisNDVisNDVisFeaturesVisualizationmethodsoptimalformassivedatasetsQueriesdefinethecoloringofthevisualizationInteractive,visualprojectionpursuitHillclimbingoptimizationtominimize