FHIR Search extensions

In addition to implementing most of the FHIR Search specification, Oracle HDR FHIR server implements the following extensions: _source, %now, and %today.

_source—An additional search parameter called _source can be used to search for resources based on information about the system or request that created the resource.

Request: Search parameter _source

%now—Date searches can be performed relative to "now" using the %now parameter value.

For example, to search for Procedures with a date later than now, you can search for /Observation?date=le%now.

Note:

The "%" needs to be URL escaped so the actual URL will be /Observation?date=le%25now.

Request: Search parameter _source now

%today—Similarly date searches can be performed relative to "today" using the "%today" parameter value. "%today" works the same as "%now" except that it searches as a "date" type as opposed to a "dateTime" type.