IT-SC book: Advanced CORBA Programming with C++ in Software

Print Code 3 of 9 in Software IT-SC book: Advanced CORBA Programming with C++
IT-SC book: Advanced CORBA Programming with C++
Generate Code 39 Extended In C#.NET
Using Barcode creation for .NET Control to generate, create Code 39 Extended image in .NET applications.
One way to deal with dangling bindings is to write your clients so that they unbind dangling references When a client receives an object reference from the service, it invokes a ping operation on the object (see page 255) If the operation raises OBJECT_NOT_EXIST, the client removes the binding You can also periodically ping objects that are bound into the Naming Service by using a separate client program written especially for that purpose (some vendors provide a tool that does this) As almost always in distributed systems design, there are no hard and fast rules, only guidelines Ultimately, you must make your own decision depending on your requirements
Encoding ANSI/AIM Code 39 In .NET
Using Barcode printer for ASP.NET Control to generate, create Code 39 Extended image in ASP.NET applications.
1812 When to Advertise
ANSI/AIM Code 39 Maker In Visual Studio .NET
Using Barcode creation for VS .NET Control to generate, create ANSI/AIM Code 39 image in .NET applications.
Exactly when to add and remove advertisements for your objects again depends on which objects you advertise If you advertise only a few key objects, it is typically easiest to do it once only during installation and configuration of your software For added safety, you can also provide a simple tool that re-creates the bindings for an installed application, thereby enabling recovery from corruption of or loss of the Naming Service If you advertise all your objects, it is typically best to link the creation and removal of bindings to the life cycle operations for the objects For example, in the climate control system, the factories for thermometers and thermostats can also take care of advertising each object in the Naming Service, and the remove operation can call unbind to ensure that the name for an object disappears from the Naming Service when the object is destroyed However, if you care about robustness, this approach also requires an errorhandling strategy to deal with a non-functional Naming Service (Typically, it is easiest to raise an exception and deny service if a factory or remove operation cannot reach the Naming Service)
Code 39 Extended Creator In Visual Basic .NET
Using Barcode drawer for Visual Studio .NET Control to generate, create ANSI/AIM Code 39 image in VS .NET applications.
1813 Federated Naming
Bar Code Scanner In .NET Framework
Using Barcode scanner for .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Each binding in the Naming Service is provided by an IOR, so you can easily create a federated service A federated service provides a single logical service to clients but consists of a number of physical servers, possibly in different remote locations Federated services offer a number of advantages Each server in a federation provides a subset of the complete graph This arrangement improves reliability because if a single server fails, only bindings in the failed server become inaccessible The portions of the graph maintained by other servers in the federation are still visible to clients Servers in a federation share the processing load of the logical service This improves performance because different servers can work in parallel to resolve bindings on behalf of different clients
Paint Bar Code In Visual Studio .NET
Using Barcode generator for Visual Studio .NET Control to generate, create bar code image in .NET applications.
IT-SC book: Advanced CORBA Programming with C++
Data Matrix ECC200 Drawer In Visual Studio .NET
Using Barcode generation for Visual Studio .NET Control to generate, create Data Matrix 2d barcode image in .NET applications.
Federated servers spread the persistent storage for the graph over a number of machines, and that improves scalability Federation of a service permits you to maintain distinct administrative domains while still providing a single logical service For example, all the names for objects in each part of an organization can be stored locally in each organization's Naming Service, but the names for objects in all parts of the organization are visible to clients To federate servers, you must get a reference to the initial naming context of one server across to another server The question is, how do you achieve this If the two servers are in different administrative domains and if no references exist from one domain into other, you cannot use a remote CORBA call to copy a reference from one domain into the other The answer is that at least once, you must copy a stringified reference for an initial naming context across domains by out-of-band means, such as e-mail After you have created the first binding from one Naming Service to another, further references become available across domains via the now federated Naming Service[8]
Paint Bar Code In VS .NET
Using Barcode drawer for ASP.NET Control to generate, create barcode image in ASP.NET applications.
[8] The revised Naming Service will allow you to configure one ORB domain to access another domain's Naming Service without the need to exchange stringified references Instead, knowledge of a machine name in the target domain will be sufficient
European Article Number 13 Printer In VS .NET
Using Barcode generation for .NET Control to generate, create EAN13 image in .NET applications.
18131 Fully Connected Federation Structure Figure 188 shows one way to provide a federated Naming Service Assume that our famous Acme Corporation has branches in three states: California, Colorado, and Massachusetts Each branch runs its own Naming Service, but clients want uniform names for all Acme objects regardless of their location
Barcode Drawer In Visual Basic .NET
Using Barcode creator for VS .NET Control to generate, create bar code image in .NET applications.
Encode Barcode In .NET
Using Barcode drawer for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Encoding Data Matrix ECC200 In Visual C#.NET
Using Barcode drawer for .NET Control to generate, create Data Matrix ECC200 image in .NET framework applications.
Create Barcode In Visual Basic .NET
Using Barcode drawer for .NET Control to generate, create barcode image in .NET applications.
USS Code 39 Creator In .NET Framework
Using Barcode drawer for VS .NET Control to generate, create Code39 image in VS .NET applications.
Data Matrix ECC200 Decoder In VS .NET
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in .NET framework applications.