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namespace Server { class CustomerManager: MarshalByRefObject { public CustomerManager() { Console.WriteLine("CustomerManager.constructor: Object created"); } public Customer getCustomer(int id) { String machinename = Environment.MachineName; IPrincipal principal = System.Threading.Thread.CurrentPrincipal; if (! principal.IsInRole(machinename + @"\RemotingUsers")) { throw new UnauthorizedAccessException( "The user is not in group RemotingUsers"); } Console.WriteLine("CustomerManager.getCustomer): Called"); Customer tmp = new Customer(); tmp.FirstName = "John"; tmp.LastName = "Doe"; tmp.DateOfBirth = new DateTime(1970,7,4); Console.WriteLine("CustomerManager.getCustomer(): Returning " + "Customer-Object"); return tmp; } } } You can use the same client as in the earlier example with this server. Depending on the group membership of the user, you will see the output in Figure 5-11 when DummyRemotingUser is a member of RemotingUsers, or the output in Figure 5-12 when DummyRemotingUser is not a member of this group.

private function _DataModel_ObjectProxy2_i() : mx.utils.ObjectProxy { var temp : mx.utils.ObjectProxy = new mx.utils.ObjectProxy(); temp.fullName = "John Doe"; temp.email = "john@gmail.com"; temp.phone = "212-222-2222"; temp.zip = 10001; info2VO = temp; return temp; } private function _DataModel_ObjectProxy1_i() : mx.utils.ObjectProxy { var temp : mx.utils.ObjectProxy = new mx.utils.ObjectProxy(); temp.fullName = "John Doe"; temp.email = "john@gmail.com"; temp.phone = "212-222-2222"; temp.zip = 10001; infoVO = temp; return temp; }

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When the vector model updates, its CHANGE event is fired, and the view redraws the vectors on the stage. How does it do that In 1, we looked at how you can use the drawing API to draw lines and shapes on the stage. If you want those lines and shapes to change every frame, you need to use the graphics.clear method. The graphics.clear method erases the drawing from the previous frame and redraws the line or shape with the new updated coordinates. To use it, just call it as the first drawing method. This example from the VectorView class draws the main vector line:

Here s what the mxmlc code generated to create the binding tag:

Note Updates to group membership or users passwords are not reflected online in IIS. You might have to

_mainVector.graphics.clear(); _mainVector.graphics.lineStyle(1, 0xFF0000, 1); _mainVector.graphics.moveTo(_startX, _startY); _mainVector.graphics.lineTo(_endX, _endY); Without clearing the graphics each frame, the previous line will stay on the stage, and the new line will be drawn over it. Figure 2-10 shows what the VectorBasics SWF would look like if it were compiled without the graphics.clear method in the preceding code. In many cases, this actually might be a desirable effect.

[Bindable(event="propertyChange")] public function get info2VO():mx.utils.ObjectProxy { return this._1945369341info2VO; } public function set info2VO(value:mx.utils.ObjectProxy):void { var oldValue:Object = this._1945369341info2VO; if (oldValue !== value) { this._1945369341info2VO = value; this.dispatchEvent(mx.events.PropertyChangeEvent.createUpdateEvent(this, "info2VO", oldValue, value)); } } /** * generated bindable wrapper for property infoVO (public) * - generated setter * - generated getter * - original public var 'infoVO' moved to '_1184171033infoVO' */ [Bindable(event="propertyChange")] public function get infoVO():mx.utils.ObjectProxy { return this._1184171033infoVO; } public function set infoVO(value:mx.utils.ObjectProxy):void { var oldValue:Object = this._1184171033infoVO; if (oldValue !== value) { this._1184171033infoVO = value; this.dispatchEvent(mx.events.PropertyChangeEvent.createUpdateEvent(this, "infoVO", oldValue, value)); } }

Security with Remoting in .NET 2.0 (Beta)

It s good to understand how the mxmlc works which can help you decide what type of model class you want to create.

Figure 2-10. This is what happens if you don t use the graphics.clear method before you redraw the lines and shapes each frame.

With the next version of the .NET Framework, version 2.0 (codename Whidbey), security is an integral part of the .NET Remoting framework. The security infrastructure for .NET Remoting 2.0 includes authentication as well as channel security similar to the SSPI sample solution described earlier in this chapter. Security in .NET Remoting 2.0 will be configured directly for the channel. Therefore, all you have to know about for leveraging the security infrastructure is a couple of new channel properties as well as enumerations used in conjunction with those properties. Take a look at the following table for an overview of the new properties and their associated enumerations.6

Here is the same data model as an object class, often used in Flex frameworks. Notice that you set the entire class as Bindable to bind all the properties in the class. The constructor allows you to set all the properties in the VO for easy creation of the class.

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