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public void save(User user) { getHibernateTemplate().saveOrUpdate(user); } And here s the save method implemented by LdapUserDaoImpl: public void save(User user) { DirContextAdapter ctx = new DirContextAdapter(); ctx.setAttributeValues("objectclass", new String[] {"top", "person", "organizationalPerson", "inetOrgPerson"} ); HashMap<String,String> map = new LdapUserAttributeMapper (ldapAttributesDto).mapFromLdapUserDto(ldapUserDto); for(String key : map.keySet() ){ ctx.setAttributeValue(key, map.get(key)); } ldapTemplate.bind(this.buildRdn(ldapContactDto.getUid()), ctx, null); } Our business layer will refer to the UserDao interface and not to its implementation classes; by referring to the interface, it will be very easy to port our application from using a database to using LDAP storage. All we have to do is inject into our container the new class LdapUserDaoImpl. Easy!

Implementing UpdateInventory()

If you enable more than one authentication option, the client will use the strongest authentication method it supports as long as anonymous access is not enabled. If anonymous access is enabled, the client will access the website anonymously. This means if you want to force clients to log in, you need to take one of two steps: Remove the Anonymous access check box. Add authorization rules to the web.config file that explicitly deny anonymous users from accessing a specific page, subdirectory, or application. Authorization rules are described briefly in the section Denying Access to Anonymous Users and in more detail in 23.

The UpdateInventory() method is simple: public void UpdateInventory(DataTable modifiedTable) { dAdapt.Update(modifiedTable); } Here, the data adapter object examines the RowState value of each row of the incoming DataTable. Based on this value (e.g., RowState.Added, RowState.Deleted, or RowState.Modified), the correct command object is leveraged behind the scenes.

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Great! At this point, the logic of the second version of your data access library is complete. You are not required to do so, but set the version number of this library to 2.0.0.0, just for good housekeeping. As described in 14, you can change the version of a .NET assembly by double-clicking the Properties node of your Solution Explorer, and then clicking the Assembly Information... button located in the Application tab. In the resulting dialog box, set the Major number of the Assembly Version to the value of 2 (see 14 for more details). Once you do this, recompile your application to update the assembly manifest.

If you remove integrated Windows authentication from your virtual directory, you won t be able to debug your web application. That s because Visual Studio .NET uses this protocol to authenticate you when you compile and run an application in the development environment.

At this point, you can build a front end to test your new InventoryDALDisLayer class. Once again, you will use the Windows Forms API to display your data on a graphical user interface. Create a new Windows Forms application named InventoryDALDisconnectedGUI and change your initial Form1.cs file to MainForm.cs using the Solution Explorer. Once you create the project, set a reference to your updated AutoLotDAL.dll assembly (be sure you pick version 2.0.0.0!) and import the following namespace: using AutoLotDisconnectedLayer; The design of the form consists of a single Label, DataGridView (named inventoryGrid), and Button control (named btnUpdateInventory), which you configure to handle the Click event. Here is the definition of the form: public partial class MainForm : Form { InventoryDALDisLayer dal = null; public MainForm() { InitializeComponent(); string cnStr = @"Data Source=(local)\SQLEXPRESS;Initial Catalog=AutoLot;" + "Integrated Security=True;Pooling=False"; // Create our data access object. dal = new InventoryDALDisLayer(cnStr); // Fill up our grid! inventoryGrid.DataSource = dal.GetAllInventory(); } private void btnUpdateInventory_Click(object sender, EventArgs e) { // Get modified data from the grid. DataTable changedDT = (DataTable)inventoryGrid.DataSource; try { // Commit our changes. dal.UpdateInventory(changedDT); } catch(Exception ex) {

Once you ve configured IIS, the authentication process happens automatically. However, if you want to be able to access the identity information for the authenticated user, you need to configure the web.config file to use Windows authentication, as shown here: <configuration> <system.web> <!-- Other settings omitted. --> <authentication mode="Windows"/> </system.web> </configuration> This tells ASP.NET that you want to use the Windows authentication module. The WindowsAuthenticationModule HTTP module will then handle the Application_AuthenticateRequest event.

MessageBox.Show(ex.Message); } } } Once you create the InventoryDALDisLayer object, you can bind the DataTable returned from GetAllInventory() to the DataGridView object. When the user clicks the Update button, you extract the modified DataTable from the grid (with the DataSource property) and pass it into your UpdateInventory() method. That s it! After you run this application, add a set of new rows to the grid and update/delete a few others. Assuming you click the Button control, you will see your changes have persisted into the AutoLot database.

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