COM+ Event System
Applies To: Windows Server 2008
The COM+ Event System service matches and connects publishers and subscribers through a loosely coupled events system. A publisher makes the method call to initiate an event, and a subscriber receives these calls through the event system rather than directly from the publisher. The COM+ Event System service maintains the list of interested subscribers who receive the calls, and it directs those calls without requiring the knowledge of the publisher.
Aspects
The following is a list of all aspects that are part of this managed entity:
| Name | Description |
|---|---|
The event system configuration specifies the properties that control the automatic event distribution to Component Object Model (COM) components that subscribe to the COM+ Event System service. |
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COM+ applications use Microsoft Component Object Model (COM) technology in Microsoft Windows operating systems to communicate and take advantage of Windows services. COM technologies include COM+, DCOM, and ActiveX Controls. The COM+ Event System service supports system event notification for COM+ components, which provides automatic distribution of events to subscribing COM components. A publisher makes the method call to initiate an event, and a subscriber receives these calls through the event system rather than directly from the publisher. The COM+ Events service maintains the list of interested subscribers who receive the calls and directs those calls without requiring the knowledge of the publisher. |
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The COM+ Event System service provides automatic event distribution to Component Object Model (COM) components that subscribe to it. The functionality of the COM+ Event System service depends on consistency between the registry and the COM+ registration database. Each component attribute is stored in either the Windows registry or the COM+ Registration Database. New COM components are registered exclusively in the COM+ Registration Database, although there is some duplication in the Windows registry so that existing tools can use them. |