Apama 10.3.1 | Apama Documentation | Connecting Apama Applications to External Components | Working with Connectivity Plug-ins | Getting Started with Connectivity Plug-ins | Controlling how the correlator interacts with a chain
 
Controlling how the correlator interacts with a chain
A host plug-in controls how the correlator interacts with a chain. In the YAML configuration file, the host plug-in is the first element in the configuration of a chain. You can configure the apama.eventMap host plug-in, for example, to specify the following:
*A default channel to send to.
*A channel to subscribe to for events that are sent towards the transport.
*A default event type for events that are sent towards the correlator (host).
See also Host plug-ins and configuration and Translating EPL events using the apama.eventMap host plug-in.
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