XPathUsageType
How a search parameter relates to the set of elements returned by evaluating its xpath query.
This code system http://hl7.org/fhir/search-xpath-usage defines the following codes:
|
Code
|
Display
|
Definition
|
| normal
|
Normal |
The search parameter is derived directly from the selected nodes based on the type definitions. |
| phonetic
|
Phonetic |
The search parameter is derived by a phonetic transform from the selected nodes. |
| nearby
|
Nearby |
The search parameter is based on a spatial transform of the selected nodes. |
| distance
|
Distance |
The search parameter is based on a spatial transform of the selected nodes, using physical distance from the middle. |
| other
|
Other |
The interpretation of the xpath statement is unknown (and can't be automated). |