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Business Object Framework BOF

Business Object Framework BOF. Overview Erik Gyllenswärd Mladen Kap. Business Object Framework, BOF.

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Business Object Framework BOF

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  1. Business Object FrameworkBOF Overview Erik GyllenswärdMladen Kap

  2. Business Object Framework, BOF • BOF provides a number of concept to help model the real world in an expressive way. It also provides a design environment to help you to build applications using the concept and a runtime environment to execute and view applications. • The information model supported by BOF is centered around concepts of,objectsaspectsrolesrelationsviews

  3. Business object model School Ann • Object - represent complex real-world entity; pump, valve, human, errend. • Aspect - represent natural related part of an object functionality; map, man-ual, web camera, operator display. • Relation - a powerful way to model connections to other objects; marrige, location structure, electrical structure. • Role – an object can play different roles; wife, mother, employee. • View, restrict visability and access. A Familyview Organization BO Wife Employee A A Wife role Marrige relation R Paul Husband role Organization BO Husband Employee A A Familyview A Football

  4. Business object and aspects Pump • BOF objects are objects that represent complex real-world entities of interest to one or more application domains. • A BOF object can be regarded as a container keeping related behavior of the object together. Different logical units of functionality is delegated to BOF aspects. • Examples of BOF objects are organization, department, project, person, car, building, order, etc. User manual A Operator display A BO Wiring diagram A A Maintenance data UI UI UI Busi- ness BO A DS DS Data

  5. Husband Wife A A Marrige Parent Parent BO R BO A A Paul Ann Parenthood R R Parenthood John BO A Child Relations and roles • Business functionality is often provided by related and cooperating business objects. • To model and implement business applications a rich relationship concept must be provided. • A relation ties two roles together. • An object can play many roles. • To move in-between objects typed relations are useful.

  6. Husband Wife A A Marrige Parent Parent BO R BO A A Parenthood R R Parenthood BO A Child Presentation views • A business object facilitates that all related information can be kept together. To be able to restrict visibility and accessibility the concept of views are provided. • A family view shows all aspects and relations related to the family. • A marriage view shows only aspects and relations related to the marriage. Paul Ann Family Marrige Family Marrige Family Family John Family

  7. Set As Root Properties Query Change Services Create Aspect Create Relation Web Camera Help Delete Object services • An object has a number of system defined services e.g. delete object, view properties, add user defined services. • A document or a Web Camera application can be added to the object and user services to activate the appropriate application can thus be added without programming. UI UI UI UI Web- Cam Word Busi- ness BO DS File Data File

  8. Example object services

  9. Aspects • A BOF aspects is a directory object representing a distinct aspect of information related to or behavior characteristic for a BOF object. • This delegation of information or behavioral aspects to Aspects facilitates building BOF objects from components that often already exists in different parts of larger business systems. UI UI UI Aspect Busi- ness BO DS Data

  10. Relations Properties Camera Help Change Services Delete New aspect type • An aspect has a number of system defined services e.g. delete aspect, view properties, add user defined services. • A new aspect type can be created without programming, e.g. a Web Camera aspect type. • The Web Camera application, related documents and user services to activate appropriate applications can be added without programming. UI UI UI UI UI Asp. Web- Cam Word Busi- ness BO DS File Data File

  11. New aspect implementation and type • To participate in the Business Object Framework IBofAspect interface must be implemented. • Object lifecycle suppport - AfterCreate, Initialize, BeforeDelete. • Object activation support – OnActivate, OnChange, OnDeactivate. • Get and set Name and get Type. UI UI UI IBofAspect Asp. Busi- ness dll BO IADs DS DB File Data

  12. Relations Properties MyService Notepad Change Services Delete IBofServiceProvider interface • To be able to activate the aspect from the service menu IBofServiceProvider must be implemented. • The MenuItems function is used to define new custom services in the menu. • The Item function invokes a chosen service via an URL or progID. • Count returns number of services. • Add and Remove to configure new services at run-time. UI UI UI UI UI Asp. Busi- ness dll BO Note- pad DS DB File File Data

  13. IADs interface • The aspect can choose to store data either in AD or some other store. • IADs interface does not have to be implemented, can access IADs within the the code when appropriate. • The blob can be used via a propertybagBag.WriteProperty "Picture", mPicmDso.Put("bofBlob", Bag.Contents)mDso.SetInfoBag.Contents = mDso.Get("bofBlob")mPic = Bag.ReadProperty("Picture", "") UI UI UI UI UI Asp. Busi- ness dll BO Note- pad DS DB File File Data

  14. Object and aspect creation • IBofSystem provides services to create and delete BofObjects. All objects are of a generic type and created in a default container. An object are mostly accessed via a view. Dim Sys As BOF.IBofSystem, Obj As BOF.IBofObject, Asp As BOF.IBofAspect Set Sys = BOFSYS.GetSystem() Set Obj = Sys.CreateObject(“Generic”, “MyObjectName”) • IBofObject provides services to create and delete aspects. Get current view and and attach a relation. Set Asp = Obj.CreateAspect(“Generic”, “MyAspectName”)

  15. View creation • BOF views provide a way of structuring information about objects and their relations into ‘natural’ parts, which is meaningful to one or more categories of users. Dim MyView As BOF.IBofView, Rel As BOF.IBofRelation, MyViews As BOF.IBofViews MyViews = Sys.Views Set MyView = MyViews.Item(“MyPersonal1”) Set MyView = MyViews.Add(“MyPersonal2”) MyView = Obj.CurrentView

  16. Relation creation and roles • Business functionality is often provided by related and cooperating business objects. • BOF relations can have different meaning, they are typed. • A relation can be presented in different views. A generic relation is always presented in the view it is created. • A relation connects two roles. Dim MyView As BOF.IbofView, MyRel As BOF.IBofRelation Set MyRel = MyView.CreateRelation(“Generic”) MyRel.Role(1).Attach MyObj1 MyRel.Role(2).Attach MyObj2

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