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Finally, you can inspect or change your access rules from the Manage Access Rules screen (accessible from the Security tab) to see what your settings are. Figure 13-13 shows what the access rules for the UserFolder directory are. As you can see, anonymous users are not allowed, but regular users and administrators are. In a similar manner, anonymous users and regular users are not allowed to access the AdminFolder directory, but administrators are.

You retrieve information about the portal with the PortalContext object. In the current version of the portlet API, all of the portal information is read-only, so it is not possible to create nonproprietary administrative or management portlets just yet. Vendors could provide their own interfaces to set portal configuration data, or they could just bundle their own administrative portlets. Less-sophisticated portals will probably rely on administrators changing text or XML configuration files manually. The portal s internal configuration store is not directly accessible through the portlet API. Portlets use the PortalContext object to determine which features beyond the portlet specification the portal supports. For instance, you may be able to develop a portlet that supports a custom mode for portlets if it is available, but otherwise

<td> Andrew received his BTS commercial in 1974 and a Ph.D. in international marketing from the University of Dallas in 1981. He is fluent in French and Italian and reads German. He joined the company as a sales representative, was promoted to sales manager in January 1992 and to vice president of sales in March 1993. Andrew is a member of the Sales Management Roundtable, the Seattle Chamber of Commerce, and the Pacific Rim Importers Association. </td> </tr> <tr> <td>3</td> <td>Janet</td> <td>Leverling</td> <td>(206) 555-3412</td> <td> Janet has a BS degree in chemistry from Boston College (1984). She has also completed a certificate program in food retailing management. Janet was hired as a sales associate in 1991 and promoted to sales representative in February 1992. </td> </tr> </table> </body> </html> As you can see, the source XML markup is transformed into HTML markup as specified in the style sheet.

Now that the site is configured, you can use ASP.NET server controls to provide login functionality.

7

defaults to making that content available through a link from the default VIEW mode. All portlets have access to the PortalContext for the portal they are running in. The PortalContext object is made available to a portlet through the getPortalContext() method on the PortletRequest object:

Step 2: Creating the Sign-In Functionality .NET provides a number of server controls that make providing and managing formsASP based authentication very easy. The first of these is the LoginStatus control, which provides the current status of the user. Drag an instance of this onto the Default.aspx page in the root folder of your web site. By default, this will create a Login link, which users will use to access your sign-in screen (see Figure 13-14).

In Listing 6-5, you created a style sheet that transforms details of a single employee, Nancy, by using the <xsl:if> element. The problem with our XSLT is that we hard-coded the name Nancy in the style sheet. In real-world cases, this name will probably come from a user interface element. Thus it becomes necessary that the employee s first name be accepted as a parameter in the XSLT rather than a fixed value. Fortunately, XSLT allows you to declare parameters in your style sheet. These parameters can then be supplied at run time from your application. A collection of these parameters is represented by the XsltArgumentList class, and you can add individual parameters to this collection. To illustrate the use of XsltArgumentList, we will develop an application like the one shown in Figure 6-6.

public PortalContext getPortalContext()