Working with URIs
URI safe transformation
The URI safe transformation is a process which converts human-friendly text into an identifier which can be used as part of a URI. It is used to generate URIs to identify code list concepts, new units, new measures and new attribute values.
The process
| Step | Example |
|---|---|
| The entire label is converted to lower case | Picard, Jean-Luc! is transformed to picard, jean-luc! |
Characters which are not letters, numbers, _ or / are replaced with a dash, - |
picard, jean-luc! is transformed to picard--jean-luc- |
| Multiple dashes are replaced with single dashes | picard--jean-luc- is transformed to picard-jean-luc- |
| A trailing dash is removed if present | picard-jean-luc- is transformed to picard-jean-luc |
Once this process is complete, the value is appended on to a URI base to make a full URI, for example picard-jean-luc may be appended to http://example.com/definitions/code-lists/enterprise-captains/ to identify Jean-Luc Picard within the code list defining Enterprise captains.
http://example.com/definitions/code-lists/enterprise-captains/picard-jean-luc.