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1、DesignPatternsforMetamodelsHyunChoandJeffGrayUniversityofAlabamaDepartmentofComputerScienceBox870290Tuscaloosa,AL,35216hcho7@ua.edu,gray@cs.ua.eduAbstractlanguagedesignersarerequiredtohavedeepunderstandingofbothatargetdomainandlanguageAmetamodelisusedtodef
2、inetheabstractsyntax(i.e.,developmentexpertise.entities,attributes,andrelations)ofaDomain-SpecificGeneral-PurposeModelingLanguages(GPMLs)areModelingLanguage(DSML).Inaddition,ametamodeldesignedtomodelawiderangeofdomains,suchasalsodefinesconstraintsandstatic
3、semanticsthatprovidebusinessprocessmodelingandmanufacturing,inadditionadditionalinformationaboutthemodelinglanguagetosoftwaredesign.Generally,GPMLsliketheUMLbeyondtheabstractsyntax.Inmanycases,thespecificationconsistofalargesetoflanguageconstructstobeusedi
4、nofanewmetamodelishighlydependentonthedesigner’smanycontexts,withtheunderstandingthatnotallofthebackgroundandexperiences.Thus,metamodeldesignsprovidedmodelingconceptsareneededforeachdomain.oftendifferfromdesignertodesigner,evenforrecurringHowever,DSMLsared
5、esignedandimplementedtobedesignproblems(i.e.,thereismorethanonewaytospecifyusedforaspecificdomain.BecauseDSMLscanofferamodelinglanguagewithametamodel).Thequalityofaseveralbenefitsduetotheirconcisenessandexpressiveness,metamodeldesignmayalsovaryaccordingtot
6、hemanyDSMLshavebeendevelopedandappliedforvariousdesigner’sdomainknowledgeandmodelinglanguagedomains.expertise.Toprovideconsistentsolutionsforrecurringmetamodeldesignissues,designpatternsappliedtoDespitenumeroussuccessfulcasestudies,thereareseveralmetamodel
7、smayofferkeyinsights,especiallytonewchallengesthatmaycontributetothelackofwidespreadlanguagedesignerswhohavelessexperience.Inthispaper,adoptionofDSMLsinindustry:(1)domainknowledgeandwemotivatetheneedfordesignpatternsformetamodelslanguagedevelopmentexpertis
8、earerequiredwhenandprovideafewexamplesoftheconcept.developingDSMLs,butfewexpertshavesuchexpertise,(2)lackofmethodsandguidelinestodevelopandmanageCategoriesandSubjectDescriptorsD.3.3[ProgrammingqualityDSMLs.In
