Hi Simon, Thank you for your replay.
To help you to better understand the context i have to give you some additional information. First of all the wish is to be less intrusive as possible. The intention is to build a thin layer around SDO_DAS_Relational related classes. To be concised: In SDO_DAS_Relational DataObjectImpl istance is the main object used to set the varius changes to the underlying DB-Host. The goal is to intercept both the moment in which DataObject changes its state, or better when one or more of its properties are modified, and when its general state change from "pending changes" to "changes saved". Before and after those particular moments should be activate Business Rules to do some particular actions ( verify logical constranis, value ranges, setting default values and so on). At the moment one possible, simple way, could be used to get it. I developed a simple prototype consisting of: A IBusinessObjectRule interface. All Objects containing Business Rules should implements that interface. A DataObjectExt containing a reference to a real DataObject, a reference to the related IBusinessObjectRule implementing class object. Derivations of SDO_DAS_Reletional , SDO_DAS_Relational_UpdateAction, SDO_DAS_Relational_InsertAction, SDO_DAS_Relational_DeleteAction classes. Plus a FactoryObject Class to which to demand some propedeutic work. Some additional difficulties will be surely represented by the impossibility to give a full control of the internal mechaninsm of DataObject, in fact we are obliged to work only on its public and external interface. DataObjectExt will be a simple, surrogate DataObject using the "magic" __call, __set , __get methods to delegate the corresponding invocations to the real DataObject below. Before and After each invocation a corresponding call to the BusinessObject method will be invoked. SDO_DAS_RelationalExt extending SDO_DAS_Relational class will oper on the new creations of DataObject ( that will be new DataObjectExt incapsulating DataObject) and on the applyChanges method, that will use the extended classes mentioned above in order to invoke the BusinessObject validations rules for the CRUD Operations before adding the new command to the Execution Plan. I know that you have two solve two major problems at the moment: 1) To immagine how does it could work. 2) Understand my English. Well , we can going on if you are interested, also with other discussion contributors. Part of the source code is developed and it can be subject for experiments and further consideration. I can prepare a simple Class diagram and a Sequence diagram to help me to be the more clear as possible. Waiting for yours notices and requests. Regards, Antonello --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "phpsoa" group. To post to this group, send email to phpsoa@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.co.uk/group/phpsoa?hl=en -~----------~----~----~----~------~----~------~--~---
