SYNCHRONIZING INTERACTIVE WEB DOCUMENTS WITH FD-JAVA CONSTRAINTS

SYNCHRONIZING INTERACTIVE WEB DOCUMENTS WITH FD-JAVA CONSTRAINTS

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时间:2019-05-27

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1、SYNCHRONIZINGINTERACTIVEWEBDOCUMENTSWITHFD-JAVACONSTRAINTSAntoninaDattolo11DipartimentodiMatematicaedApplicazioni,UniversitàdiNapoliFedericoII,viaCinthia,80126Napoli,Italyantos@unisa.itVincenzoLoia22DipartimentodiMatematicaedInformatica,UniversitàdiSalerno,viaS.Allende,84081Baronissi,Salerno,Italyl

2、oia@unisa.itMichelQuaggetto33LPTL-CNRSUniversitèPierre&MarieCurie4PlaceJussieu75252ParisCedex05,Francequaggetto@lptl.jussieu.frInteractiveElectronicTechnicalManuals(IETMs)aredeliverableproductsforwhichthenewtechnologiesofinteractiveelectronicdatapresentationsareusedtoaccessanypartofthetechnicalmanu

3、al-descriptivetext,toprovidemultimediadescriptionofmaintenanceandtroubleshootingprocedures,orillustrations.ThedesignofIETMsontheWebmustfacenon-trivialproblems,inparticulartheflexibilityandthereactivityofthedigitalmanualboundedtothebehaviorofthemedia.Thispaperpresentsanextensionofobject-orientedprog

4、rammingtowardstheconstraint-basedapproach,showinghowithasbeenusedtohandlespatialaswellastemporallayoutinordertoassurecontinuousandsynchronizedvisualization.ThecomputationaltargetisJavaextendedtowardsfinitedomain(FD)constraintprogramming.EmbeddingFDconstraintswithinanobject-orientedlanguagesuchasJav

5、amakesitpossibletouseadvancedsoftwaresolutionsforWeb-basedcomplexmediamanipulations.Keywords:ConstraintprogramminginSoftwareEngineering,Object-orientedinSoftwareEngineering,InteractiveapplicationsontheWeb,Javaimplementation,IETM.1SynchronizinginteractivewebdocumentswithFD-Javaconstraints21.Introduc

6、tionInmanyinteractivecomputerapplications,itisoftendesirabletosupportthespecificationandmanipulationofrelationshipsbetweenobjects.Imaginethatwehavedrawntworectanglesandastraightline,asshowninFigure1(a).Therectangleshavethesamedimensions.Then,wewantthelinetobeconnectedtothemiddlepointsoftherightedge

7、ofthefirstrectangleandtheleftedgeofthesecondrectangle.Numerousprogramscanperformthissimpleoperation,generatingtheresultshowninFigure1(b).However,wheneitherthelineoroneoftherectanglesischanged,therelationshi

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