This project is an example of HAPI-FHIR JPAServer which is used InterSystems Caché as a backend.
You need to have Java and Maven installed before using. Clone this project. to build project you may use this command
mvn install
And then you can launch this servlet with jetty
mvn jetty:run
By default it is used Caché Server on localhost:1972 and Namespace FHIR. You can change this settings in file FhirServerConfig.java. Tested with 2016.2.