Support Package

2.1 Overview

The Support Reference Model comprises types used throughout the openEHR models, including assumed primitive types defined outside of openEHR. The package structure is illustrated in ​FIGURE

​1. The assumed_types ‘pseudo-package’ stands for types assumed by the openEHR specifcations to exist in an implementation technology, such as a programming language, schema language or database environment. The four Support packages define the semantics respectively for constants, terminology access, access to externally defined scientific units and conversion information. The class EXTERNAL_ENVIRONMENT_ACCESS is a mixin class providing access to the service interface classes.

support

definition

identification

assumed_types
FIGURE 1	rm.support and assumed_types Packages
2.2 2.2.1	Class Definitions EXTERNAL_ENVIRONMENT_ACCESS Class

CLASS	EXTERNAL_ENVIRONMENT_ACCESS (abstract)
Purpose	A mixin class providing access to services in the external environment.
Functions	Signature	Meaning
eea_terminology_svc: TERMINOLOGY_SERVICE		Return an interface to the terminology service
eea_measurement_svc: MEASUREMENT_SERVICE		Return an interface to the measurement service

​Editors:{T Beale, S Heard}, {D Kalra, D Lloyd} ​Page 11 of 67 Date of Issue:​08 Apr 2007

© 2003-2006 The openEHR Foundation email: info@… web: http://www.openEHR.org

Support Package ​Support Information Model Rev ​1.6.0

Terminology_service_exists: eea_terminology_svc /= Void Measurement_service_exists: eea_measurement_svc /= Void

Date of Issue:​08 Apr 2007 ​Page 12 of 67 ​Editors:{T Beale, S Heard}, {D Kalra, D Lloyd}

​© 2003-2006 The openEHR Foundation email: info@… web: http://www.openEHR.org

​Support Information Model Assumed Types Rev ​1.6.0