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The HIM core was split out from the RHIE specific orchestrator and adapters so that the core could be more general. The overall design of this is described here: https://wiki.ohie.org/display/SUB/OpenHIE+Interoperability+Layer+design+document

Each orchestrator and adapter is now a separate mule applications and the OpenHIM core application handles the routing, authentication and logging functions and then delegates to a particular orchestrator or adapter.

RHEA Health Information Mediator Architecture and Design

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