Expert VB 2005 Business Objects Second Edition phần 8 potx

... False mRoles.Clear() CHAPTER 8 ■ BUSINESS OBJECT IMPLEMENTATION 463 6315_c 08_ final.qxd 4/7/06 2:00 PM Page 463 it a data source, and implements code to save the object. All the authorization, validation, and other business ... original exception thrown by the business code, use the BusinessException property. Remember that you can also use the BusinessObject property to get a refer...

Ngày tải lên: 12/08/2014, 16:21

... 314–3 18 CustomIdentity, 85 DataMapper, 86 , 87 , 285 –290 DataPortal, 71 83 , 189 –197 DataPortalContext, 229–232 DataPortalEventArgs, 188 – 189 DataPortalException, 233 ListItem, 254–256 MethodCaller, 181 – 187 NameValueListBase, ... method BusinessBase class, 126, 1 28 editable root business objects, 386 implementing Project class, 419–420 implementing ProjectResource class, 4...

Ngày tải lên: 12/08/2014, 16:21

... FRAMEWORK DESIGN86 6315_c02_final.qxd 4/13/06 12:27 PM Page 86 Business Framework Implementation In Chapter 1, I discussed the concepts behind the use of business objects and distributed objects. In ... detail. BusinessBase The BusinessBase class is the base fr om which all editable (read-write) business objects will be created. In other words, to create a business object, inh...

Ngày tải lên: 12/08/2014, 16:21

... the BusinessBase class is now complete. BusinessListBase Class While BusinessBase is the primary base class for building business objects, the framework must also s upport c ollections o f business ... the four primary base classes a business developer will use to create editable and read-only business objects and collections: • Csla.BusinessBase(Of T) • Csla.BusinessListBase(Of...

Ngày tải lên: 12/08/2014, 16:21

... information of value when handling the event: CHAPTER 4 ■ DATA ACCESS AND SECURITY 188 6315_c04_final.qxd 4/13/06 12:33 PM Page 188 There’s a lot going on here, so let’s break it down a bit. First, there’s ... state of the business object itself. If the business object is a subclass of CommandBase, then the method name is DataPortal_Execute. For any other objects that don’t inherit...

Ngày tải lên: 12/08/2014, 16:21

... SmartDate. Common Business Rules The BusinessBase class implemented in Chapter 3 includes support for validation rules. Each rule is a method with a signature that conforms to the RuleHandler delegate. A business ... mapped. Business objects often have read-only properties, and obviously it isn’t possible to set those values. Yet the IDictionary or DTO may have a value for that pro...

Ngày tải lên: 12/08/2014, 16:21

... Editable Objects F or r ead-only objects , r etrieval is the only data access concept required. Editable business objects and editable collections (those deriving from BusinessBase and BusinessListBase) ... each business object should inherit. The editable business objects inherit from BusinessBase, and the collections of editable child objects inherit from BusinessListBase...

Ngày tải lên: 12/08/2014, 16:21

... _ Public Class Project Inherits BusinessBase(Of Project) CHAPTER 8 ■ BUSINESS OBJECT IMPLEMENTATION410 Figure 8- 3. The Project class subclasses BusinessBase 6315_c 08_ final.qxd 4/7/06 2:00 PM Page ... Snippets. CHAPTER 8 ■ BUSINESS OBJECT IMPLEMENTATION414 6315_c 08_ final.qxd 4/7/06 2:00 PM Page 414 The BusinessBase class requires one generic type parameter. This is the type of th...

Ngày tải lên: 12/08/2014, 16:21

... ser vices on business objects like those in this book wor ks out w ell in this model, because all your business logic is in those objects. If the service merely provides an interface to the objects, ... discuss the creation of a Web Services interface for the ProjectTracker business objects in order to illustrate how business objects can support the creation of web services....

Ngày tải lên: 12/08/2014, 16:21

... DISTRIBUTED ARCHITECTURE6 6315_c01_final.qxd 4/7/06 2:03 PM Page 6 Rockford Lhotka Expert VB 2005 Business Objects Second Edition 6315_fm_final.qxd 4/7/06 5:24 PM Page i Web Services and SOA . . . . ... leaving the business developer to focus pur ely on the dev elopment of business logic. Business Objects Having decided to use business objects and take advantage of ....

Ngày tải lên: 03/06/2014, 00:46