asp.net upc-a

asp.net upc-a

asp.net upc-a

asp.net upc-a

asp.net upc-a

asp.net upc-a,

asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,

asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,

asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,
asp.net upc-a,

When on the client, all the data binding and UI support from 3 is available to a UI developer; and when on the server, the objects will be able to persist themselves to the database (or other data store) 2 discussed the idea of a data portal The data portal combines the channel adapter and message router design patterns to provide a simple, clearly defined point of entry to the server for all data access operations In fact, the data portal entirely hides whether a server is involved, allowing an application to switch between 2-tier and 3-tier physical deployments without changing any code A UI developer is entirely unaware of the use of a data portal Instead, the UI developer will interact only with the business objects created by the business developer The business developer will make use of a Csla.

Query OK, 0 rows affected (0.02 sec)

DataPortal class to create, retrieve, update and delete all business object data This DataPortal class is the single entry point to the entire data portal infrastructure, which enables mobile objects and provides access to server-side resources such as distributed transaction support The key features enabled by the data portal infrastructure include: Enabling mobile objects Hiding the network transport (channel adapter) Exposing a single point of entry to the server (message router) Exposing server-side resources (database engine, distributed transactions, etc) Unifying context (passing context data to/from client and server) Using Windows integrated (AD) security Using CSLA NET custom authentication (including impersonation) Meeting all those needs means that the data portal is a very complex entity While to a business developer, it appears to consist only of the simple CslaDataPortal class, there s actually a lot going on behind that class.

Once you ve made your choices here, click the tab control labeled Options. You ll see a set of controls like those in Figure 12-5.

mysql> SHOW CREATE TABLE t1 \G Current database: test *************************** 1. row *************************** Table: t1 Create Table: CREATE TABLE `t1` ( `col_a` int(11) DEFAULT NULL, `col_b` varchar(20) DEFAULT NULL, `col_c` int(11) DEFAULT NULL ) ENGINE=SPARTAN DEFAULT CHARSET=latin1 1 row in set (0.20 sec)

You should also know that the foundation for custom authentication in the data portal will be created in this chapter, but the details of creating a custom NET principal object for the data portal will be discussed in 5 and then in the sample application in 8 Figure 4-1 shows the primary classes created in this chapter..

This chapter also includes many cases that support those shown in Figure 4-1. While the concept behind these classes was covered in 2, this chapter will reprise those discussions, providing insight into the implementation.

mysql> DROP TABLE t1;

One of the primary goals of object-oriented programming is to encapsulate all the functionality (data and implementation) for a domain entity into a single class This means, for instance, that all the data and implementation logic for the concept of a customer should be in a Customer class In many cases, the business logic in an object directly supports a rich, interactive user experience This is especially true for Windows Forms applications, in which the business object implements validation and calculation logic that should be run as the user enters values into each field on a form To achieve this, the objects should be running on the client workstation or web server to be as close to the user as possible At the same time, most applications have back-end processing that is not interactive In an n-tier deployment, this noninteractive business logic should run on an application server.

Query OK, 0 rows affected (1 min 19.14 sec)

Yet good object-oriented design dictates that all business logic should be encapsulated within objects rather than spread across the application This can be challenging when an object needs to both interact with the user and perform back-end processing Effectively, the object needs to be on the client sometimes and on the application server other times The idea of mobile objects solves this problem by allowing an object to physically move from one machine to another This means it really is possible to have an object run on the client to interact with the user, then move to the application server to do back-end work like interacting with the database A key goal of the data portal is to enable the concept of mobile objects.