This section contains information about methods for searching for data in the CDR.
In addition to implementing most of the FHIR Search specification, Smile CDR implements the following extensions:
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. See Storing Source Information.
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
Note the '%' would need to be URL escaped so the actual URL will be
The way this works is Smile substitutes
%now with the current date and time in the standard FHIR format
yyyy-MM-ddTHH:mm:ss before submitting it to the FHIR Storage module.
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.