{"type":"doc","content":[{"type":"paragraph","content":[{"text":"Requirements","type":"text","marks":[{"type":"strong"}]}]},{"type":"paragraph","content":[{"text":"1) A shared and standard URI to identify the particular family of languages language (Compositional Grammar, Expression Constraint Language, etc.)","type":"text"}]},{"type":"paragraph","content":[{"text":"(expression)","type":"text"}]},{"type":"paragraph","marks":[{"type":"indentation","attrs":{"level":1}}],"content":[{"text":"Examples:","type":"text"}]},{"type":"paragraph","marks":[{"type":"indentation","attrs":{"level":1}}],"content":[{"text":"","type":"text"},{"type":"hardBreak"},{"text":" ","type":"text"},{"type":"hardBreak"},{"text":"","type":"text"}]},{"type":"paragraph","marks":[{"type":"indentation","attrs":{"level":1}}],"content":[{"text":" ","type":"text"}]},{"type":"paragraph","marks":[{"type":"indentation","attrs":{"level":1}}],"content":[{"text":"{\"expression\":","type":"text"}]},{"type":"paragraph","marks":[{"type":"indentation","attrs":{"level":1}}],"content":[{"text":" {\"language\": \"http://snomed.info/fol/ecl/version/1.0\",","type":"text"}]},{"type":"paragraph","marks":[{"type":"indentation","attrs":{"level":1}}],"content":[{"text":" \"_contents\": \"<< 77400008 |Appendicitis|\"}","type":"text"}]},{"type":"paragraph","marks":[{"type":"indentation","attrs":{"level":1}}],"content":[{"text":" }","type":"text"}]},{"type":"paragraph","content":[{"text":"2) A mime type to identify referenced languages:","type":"text"}]},{"type":"paragraph","content":[{"text":" ","type":"text"}]},{"type":"paragraph","content":[{"text":" Example:","type":"text"}]},{"type":"paragraph","content":[{"text":" ","type":"text"}]},{"type":"paragraph","content":[{"text":" ","type":"text"}]},{"type":"paragraph","content":[{"text":"In particular, we note that we do ","type":"text"},{"text":"not","type":"text","marks":[{"type":"em"}]},{"text":" have any requirement to be able to embed a CG or ECL expression directly within a URL. The closest that we would come to this might be where an expression would be included as a parameter:","type":"text"}]},{"type":"paragraph","content":[{"text":" ","type":"text"},{"text":"http://example.org/server/valueset?expr=%3C%3C+77400008+%7CAppendicitis%7C","type":"text","marks":[{"type":"link","attrs":{"href":"http://example.org/server/valueset?expr=%3C%3C+77400008+%7CAppendicitis%7C"}}]}]},{"type":"paragraph","content":[{"text":"(given the fact that none of these languages are particularly URI friendly, I suspect that we'd always pass it as mime encoded data (another reason for the mime type)...)","type":"text"}]},{"type":"paragraph","content":[{"text":" ","type":"text"}]},{"type":"paragraph","content":[{"text":"Proposed URI's","type":"text","marks":[{"type":"strong"}]}]},{"type":"paragraph","content":[{"text":" ","type":"text"}]},{"type":"paragraph","content":[{"text":"The SNOMED CT URI specification defines the following patterns:","type":"text"}]},{"type":"bulletList","content":[{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"http://snomed.info/sct","type":"text","marks":[{"type":"link","attrs":{"href":"http://snomed.info/sct"}}]},{"text":" – the SNOMED CT code system (specifically intended for use with FHIR)","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"http://snomed.info/sct/{sctid}[/version/{timestamp} – editions and versions","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"http://snomed.info/id/{sctid} - SNOMED CT \"Component\" (any item identified by an SCTID such as Concept, Relationship, or Description)","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"http://snomed.info/id/{uuid} - SNOMED CT reference set","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"http://snomed.info/sct/{moduleid}/version/{time}/id/{sctid}","type":"text","marks":[{"type":"link","attrs":{"href":"#"}}]},{"text":" – version relative component","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"http://snomed.info/sct/{moduleid}/version/{time}/id/{uuid}","type":"text","marks":[{"type":"link","attrs":{"href":"#"}}]},{"text":" - version relative reference set","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"http://snomed.info/module/{sctid} - snomed ct module","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"http://snomed.info/module/{sctid}/time/{timestamp} - module at a particular point in time","type":"text"}]}]},{"type":"listItem","content":[{"type":"paragraph","content":[{"text":"http://snomed.info/field/{tablename}.{fieldname} - a field in an RF2 table","type":"text"}]}]}]},{"type":"paragraph","content":[{"text":" ","type":"text"}]},{"type":"paragraph","content":[{"text":"The pattern that appears consistently against all but (arguably) the first is:","type":"text"}]},{"type":"paragraph","content":[{"text":"http://snomed.info/{category}/{identifier}/(subcategory)/{identifier}/subsubcategory/{identifier}","type":"text"}]},{"type":"paragraph","content":[{"text":" ","type":"text"}]},{"type":"paragraph","content":[{"text":"I believe that we should remain consistent with this approach. We need to identify languages, so we should create a new category (\"lpg\", \"fol\", \"scl\", ...) and with a new set of identifiers. I would recommend:","type":"text"}]},{"type":"paragraph","content":[{"text":"http://snomed.info/fol/ecl","type":"text","marks":[{"type":"link","attrs":{"href":"http://snomed.info/fol/ecl"}}]},{"text":" – for expression constraint language","type":"text"}]},{"type":"paragraph","content":[{"text":"http://snomed.info/fol/cgl","type":"text","marks":[{"type":"link","attrs":{"href":"http://snomed.info/fol/cgl"}}]},{"text":" – compositional grammar","type":"text"}]},{"type":"paragraph","content":[{"text":"http://snomed.info/fol/sql","type":"text","marks":[{"type":"link","attrs":{"href":"http://snomed.info/fol/sql"}}]},{"text":" — query language","type":"text"}]},{"type":"paragraph","content":[{"text":"etc.","type":"text"}]},{"type":"paragraph","content":[{"text":"And","type":"text"}]},{"type":"paragraph","content":[{"text":"http://snomed.info/fol/ecl/version/0.9","type":"text","marks":[{"type":"link","attrs":{"href":"http://snomed.info/fol/ecl/version/0.9"}}]},{"text":" – for version 0.9 of the SCT expression constrant language","type":"text"}]},{"type":"paragraph","content":[{"text":"...","type":"text"}]}],"version":1}

URI's for SNOMED CT Languages