COM+ Unleashed

Loosely Coupled Events

One of the shortcomings of the COM technology set has traditionally been a lack of broadcast style services. Clients interested in notifications from COM servers have relied on custom solutions or perhaps COM connection points. Where COM is involved, both these types of solutions require the server to make a separate interface method call to each constituent client. This is far from optimal behavior and also presents an implementation dysfunction in designs that clearly call for the simplicity of broadcast semantics. As we have seen through queued components, COM+ is mending the tightly coupled, synchronous, bi-directional ways of traditional COM.

Using Loosely Coupled Events (LCE)

Loosely coupled events (LCE) introduce ...