Retrieval of documents/records is achieved through an HTTP GET request. See the Retrieval Read Interaction page for details of the requirements for creating and sending an HTTP GET request for retrieval.
Requests via the SSP
Where a document/record is to be retrieved via the SSP the Consumer MUST pre-fix the
content.attachment.url property, taken from an NRL pointer, with the SSP server URL. For further details, see the Retrieval Read interaction page.
Consumers MUST include the provider ASID in the SSP-To HTTP Header when performing a retrieval request via the SSP.
The provider ASID can be obtained through performing a Spine Directory Services (SDS) look-up. This can be done using the record author ODS code, which is included in the pointer metadata, and the spine interaction ID.
A worked example of the endpoint look-up process can be found on the Spine Core specification.
If multiple ASIDs are found for the ODS code and interaction ID, the associated FQDN can be matched to the record URL FQDN to obtain the correct ASID.
Handling Multiple Formats
Where a Pointer contains reference to multiple formats for a single record/document Consuming systems need to take action in order to understand which is the most appropriate format to display within their system.
For example, a record may be available as a PDF document but also as a FHIR resource. In this situation Consumers may find it preferable to display the FHIR resource if the Consuming system can understand and process this format.