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The LoginStatus control detects the end user s authentication status and will display the appropriate login or logout option.

WSRP portlets are components running on the producer that process actions and return markup or content. The WSRP portlets can conform to the Java portlet API, or they can be proprietary Java portlets, .NET portlets, or any other language. In addition, software applications that are not portals can be producers of WSRP portlets.

The data access layer is our interface with underlying data stores. The timesheet application limits these underlying components to a single database and a single mail server. This is not an unrealistic example (many real applications have exactly this structure) but there are numerous other mechanisms that could be used, such as data-queuing systems and event-logging systems. The DAO provides an abstraction of the underlying data source. In principle, an implementation based around a relational database can be replaced with a flat-file based implementation (or vice versa) without any impact on the functionality of the rest of the application. More realistically, a specific database could be substituted with minimal impact to the rest of the design.

The Drupal TinyMCE module has two parts: the Drupal module, which you can obtain from Drupal.org, and the TinyMCE project itself, which is hosted at SourceForge (http:// sourceforge.net/projects/tinymce/). The INSTALL.txt file that is packaged with the Drupal module provides a link to the particular SourceForge download that is to be used. Both the Drupal module and the TinyMCE project are updated often, so you are encouraged to follow the installation instructions from both projects carefully to ensure compatibility. Here are the steps for installing TinyMCE: 1. Download the TinyMCE module from http://drupal.org/project/tinymce. 2. Unpack the download and copy the tinymce folder into your Drupal modules/ directory. 3. After making a backup of your site and database, update the database using the SQL in the tinymce.mysql or tinymce.pgsql file. 4. Follow the directions in the tinymce/INSTALL.txt file for obtaining the appropriate copy of the TinyMCE project. 5. The code from the TinyMCE project is also contained in a directory called tinymce. Place this directory inside the modules/tinymce directory so that the resulting structure is modules/tinymce/tinymce/, as shown in Figure 4-1.

alter session set "_optimizer_skip_scan_enabled"=false; select /*+ index(t1) */ small_vc from t1 where and and ; n1 between 1 and 3 ind_pad = rpad('x',40) n2 = 2

Attempt recovery of specified damaged .bz2 file Display calendar for current month (or specified month/year) Display a file on screen or combine and display two files together Change to specified directory Convert CD audio tracks to hard disk files -B: Batch mode; convert all tracks to individual files -S: Set CD read speed (2, 4, 8, 12, and so on; values relate to CD-drive spin speed; used to avoid read errors)

This chapter covers the instantiation of message and channel sinks and sink chains. It shows you the foundation on which to build your own sinks something you need to know before tackling the implementation of custom sinks.

the user actually requests it, the browser just pulls it out of the cache and displays it far more quickly than if it were called from the server. That wraps up this introduction to Ajax. In the next few chapters, you ll look into the toolkit from Microsoft that allows you to easily and rapidly develop Ajax applications using a server-side paradigm: the AJAX extensions for ASP.NET, formerly known as Atlas.

At times users may want to remove previously selected items from the shopping cart. This is done with the help of the RemoveItem() web method, shown in Listing B-6. Listing B-6. Removing Items from the Shopping Cart [WebMethod] public int RemoveItem(string cartid, int productid) { string sql = "DELETE FROM shoppingcart WHERE cartid=@cartid AND productid=@productid"; SqlParameter[] p = new SqlParameter[2]; p[0] = new SqlParameter("@cartid", cartid); p[1] = new SqlParameter("@productid", productid); return SqlHelper.ExecuteNonQuery(sql, p); } The RemoveItem() web method accepts a unique cart identifier and product ID to be removed. It then executes a DELETE statement against the ShoppingCart table by using the SqlHelper class. As before, the return value of the ExecuteNonQuery() method is sent back to the client.

public class RemoteServerApp { static void Main(string[] args) { try { System.Console.WriteLine("Configuring server..."); System.Runtime.Remoting.RemotingConfiguration.Configure( "RemotingServer.exe.config"); System.Console.WriteLine( "Server configured, waiting for requests..."); System.Console.ReadLine(); } catch (Exception ex) { System.Console.WriteLine("Error while configuring server!"); System.Console.ReadLine(); } } } public class MyRemoteObject : MarshalByRefObject, RemotedType.IRemotedType { public void DoCall(string message, int counter) { // get some information about the caller's context IIdentity remoteIdentity = CallContext.GetData( "__remotePrincipal") as IIdentity; if (remoteIdentity != null) { System.Console.WriteLine("Authenticated user:\n-){0}\n-){1}", remoteIdentity.Name, remoteIdentity.AuthenticationType.ToString()); // is the principal set on the managed thread IIdentity threadId = System.Threading.Thread.CurrentPrincipal.Identity; System.Console.WriteLine( "Current threads identity: {0}!", threadId.Name); // get the identity of the process WindowsIdentity procId = WindowsIdentity.GetCurrent(); System.Console.WriteLine("Process-Identity: {0}", procId.Name); } else {

Figure 6-2. NTD architecture Figure 6-2 shows that a client makes a request to a Web server for an executable, and the Web server sends the response with a particular Multipurpose Internet Mail Extensions (MIME) type that IE knows about (IE versions 5.01 and newer). This MIME type indicates to IE that the requested executable is a .NET assembly. When it sees this, IE downloads the application and kicks off IEExec.exe to launch it. Figure 6-2 also shows that the application is potentially downloaded to several places: the GAC4 download5 and the browser cache (Temporary Internet Files). Note

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