The Research And Application Of The Testdata Management System Based On The PDM System

PDM(Product Data Management)system is a kind of new technologyof managing modern enterprise's products data, it can solve various kinds ofproblems that exist in enterprise manpower resources and informationresources abundantly rationally.Phosphor PDM products regard the application server of J2EEstandard as the developing platform, regard EJB technology as the core,software product relying mainly on JSP/SERVLET technology. The wholesystem is divided into five layers: J2EE layer,Framework layer,basicservice layer ,field object layer and application layer. The testdatamanagement subsystem is set up on PDM, belongs to the appalicationsubsystem.This paper introduce testdata sub-system designing and implement of aPDM production for FAW, discuss how to realize testdata in PDMSystem , make PDM System better organize the task and course in order toobtain greater productivity.Systematic method is a method that established from original model ofenterprise in order to manage data effectively and improve queryeffectively.Entity data has been divided into several wide type,every typecan be divided into fine subtype,the these type canbe discrribed as abusinessTree,the wide just as the root of the tree,subtype as leaf. These areUnit,dataItem,testobject,testype,apparatus that need Systematic method inthe system.The combination of system is devided into service component ,entitycomponent,tools component and client component on function by content.Service component running in method sever supply remote interface forclient. Remote interface distribute request to the correspond delegate,thecorrespond delegate deal with the request and return the result to client byremove interface . Unit describes testdata and dataItem's value and dataItem is owning totemplate and templateTable, and these two can be selected by testtype andtestobject,then,testtype,testobject,apparatus can be selected by test.all ofthe class appearances above is core entity class in the system. Sevice layerintegates all the function of data processed and data managed run in serverand supply remote method for client request. While client remote request tosever ,the method that be requested distribute work to different delegateclass by request's type .Delegate remote PDM API by middle layer to dealwith the client request and return result. System apply MVC model to deal with complicated fat client frame. MVC is the abbreviation of Model/View/Controller. MVC modelconceive user frame by three compontent : data model,view,controller. Data model is a data structure base on entity data.View is a form ofdata on screen .Contoler define the response to user input on userframe.Adopt this model in faver of establishing indenpendce logicunity ,so make the system run flexiblely and reuseful. MVC separate viewand data model by an order/notify agreement,view must reflect data modelcorrectly,model notify view to refresh itself as soon as the change ofdata.The idea make multi-view share the data in the same model,so whenchange the data in model ,multi-view canbe changed,what more ,it needn'tload the same date in memory time after time. Picture also should data that convey, JAVA picture object (Imageobject) has the equal amount with the same area 24 bit BMP file has in...