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11.10.04
XP, Component Services And .NET
 By John Godel
First of all, COM+ does revolutionize COM; it is not only a superior new version of the COM programming model it is also a new platform to design and develop components. In addition, COM+ Services in XP does have some differences from Windows 2000; also XP and COM+ 1.5 offer a richer set of services than was available in COM+ 1.0. This article will describe the basic component services on the XP.
COM+ can be used to implement mission-critical, enterprise-class, distributed applications based on the Microsoft Windows XP. In the last release, COM+ adds new features that are designed to boost the complete scalability, availability, and manageability of COM+ applications for both developers and system administrators. To make it easier to configure and deploy these new features enhanced documentation and new reference topics have been added to the Platform SDK documentation. Furthermore, Help topics have been updated in the Component Services administrative tool.
 Microsoft Windows XP emerging with it the new version of COM+ that is called COM+ 1.5. This article describes the new features and capabilities in this new release. Microsoft has superior COM+ usability in many ways, and they have addressed a numerous the on hand pitfalls of COM+ 1.0. Microsoft also added new features to existing services. In addition it stands on the base for integration with Microsoft .NET services. Certainly, that COM+ 1.5 is fully backward compatible with COM+ 1.0 components and applications and that gives you the ability to use COM 1.0 components, which you develop them before.
You will need to use COM+ for several of reasons while you design and develop enterprise software. If you are a system administrator, you can install, deploy and configure COM+ applications and their components. If you are an application programmer, you can write components and integrate them as applications. If you are a tools vendor, you can develop or modify tools to more functional in the COM+ environment.
Why Do We Need Component Services?
COM+ brings an experience to design and developing enterprise applications and making life trouble-free for software designer and developers. Users can now concentrate on developing business sense with simplicity, while being secured from the basic aspects of enterprise application development from beginning to end the use of COM+ components.
Once more, COM+ designed to make it simple to design and develop enterprise-class distributed applications. However, we should decide about what is really an enterprise-class mean. An enterprise-class distributed application is timely implementation and correct application processes also doing critical operation of some business. Additionally, this type application can use with many different user types such as clients, employers, operators etc. All enterprise-class application should be relational with internet/intranet, multi-tier networking with security capabilities. As well, one of Microsoft's goals in developing COM+ has been to offer companies the benefits of multi-tier applications while hiding as much of the inherent complexity as possible. More than the last decade, Microsoft has made many advances in creating this infrastructure for distributed applications. Opposing to common opinion, the .NET Framework does not replace COM+. You still need COM+ services-such as distributed transactions, object pooling, Just-In-Time Activation (JITA), synchronization, and queued components-to build enterprise-class, distributed applications on the Windows platform. In this article, you will learn how to create and deploy a serviced component, which is Microsoft's name for a .NET component that uses the COM+ services.
What is a Component Service?
You must recognize component services are COM+ in Microsoft XP and 2000 Operating Systems; it is the new step in the evolution of the Microsoft Component Object Model with Microsoft Transaction Server (MTS). COM+ handles many of the resource management responsibilities you until that time had to program yourself, such as thread security and allocation. It automatically makes your applications more scalable by providing thread pooling, object pooling, and just-in-time object activation. COM+ also protects the integrity of your data by providing transaction support, even if a transaction spans multiple databases over a network.
Read the Rest of The Article.
About the Author:
John Godel is a computer/software engineer in Massachusetts. He enjoys chess and basketball, and he "loves the programming world." |
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