= Support Package =
== 2.1 Overview == #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 [file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_16040 FIGURE]

[file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_16040 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||

[file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_15315 Editors:{T Beale, S Heard}, {D Kalra, D Lloyd}] [file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_19440 Page 11 of 67] Date of Issue:[file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_15448 08 Apr 2007]

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

Support Package [file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_15311 Support Information Model] Rev [file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_15315 1.6.0]

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

Date of Issue:[file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_15448 08 Apr 2007] [file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_19440 Page 12 of 67] [file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_15315 Editors:{T Beale, S Heard}, {D Kalra, D Lloyd}]

[file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_15429 © 2003-2006 The openEHR Foundation]  email: info@openEHR.org web: !http://www.openEHR.org

[file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_15311 Support Information Model] Assumed Types Rev [file:///home/skoba/src/openehr-jp/adl/trunk/pdf2html/rm/support_im/support_im.htm#LinkTarget_15315 1.6.0]