Using the Ehrscape FLAT JSON |raw attribute to access 'hidden' Element attributes
Whilst the Ehrscape FLAT\STRUCTURED JSON formats allow deeply nested openEHR datatypes to be simply populated, not all of the low-level attributes of every openEHR datatype are exposed in FLAT/STRUCTURED JSON.
As an example, the openEHR DV_QUANTITY datatype
has the following attributes..
- Attributes supported by FLAT/STRUCTURED JSON
-
-
normal_range -
magnitude -
units
-
- Attributes NOT Supported by FLAT/STRUCTURED JSON
-
-
other_reference_ranges -
normal_status -
magnitude_status
-
The Ehrscape RAW JSON format does support all of these attributes.
Fortunately the FLAT/STRUCTURED JSON formats have a |raw attribute which allows a stringified form of RAW JSON to be commited alongside normal FLAT JSON.
As a simple example, instead of sending the following FLAT JSON …
"laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:0/result_value/value2|magnitude": "83",
"laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:0/result_value/value2|unit": "g",it is possible to send the RAW JSON equivalent
{
"@class": "DV_QUANTITY",
"magnitude": 7.4,
"units": "mmol/l"
}but this has first to be converted to a flattened string, removing any newlines/whitespace, escaping any json reserved characters.
"{\"@class\": "\DV_QUANTITY\",\"magnitude": 7.4,\"units\": \"mmol/l\"}"The stringified JSON is then added to the FLAT/STRUCTURED JSON via a |raw attribute…
{
"laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:0/result_value/value2|raw": "{\"@class\":\"DV_QUANTITY\",\"normal_range\":{\"@class\":\"DV_INTERVAL\",\"lower\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":2.5,\"units\":\"mmol/l\"},\"upper\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":6.6,\"units\":\"mmol/l\"},\"lower_unbounded\":false,\"upper_unbounded\":false},\"other_reference_ranges\":[{\"@class\":\"REFERENCE_RANGE\",\"meaning\":{\"@class\":\"DV_TEXT\",\"value\":\"Age-sex appropriate range\"},\"range\":{\"@class\":\"DV_INTERVAL\",\"lower\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":2.5,\"units\":\"mmol/l\"},\"upper\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":6.6,\"units\":\"mmol/l\"},\"lower_unbounded\":false,\"upper_unbounded\":false}}],\"normal_status\":{\"@class\":\"CODE_PHRASE\",\"terminology_id\":{\"@class\":\"TERMINOLOGY_ID\",\"value\":\"openehr\"},\"code_string\":\"LL\"},\"magnitude_status\":\">=\",\"magnitude\":7.4,\"units\":\"mmol/l\"}"
}|
|
Where multiple datatypes are allowed for the Element, the |raw attribute must be added to the openEHR "sub-type" must be selected first.
e.g. …/value2|raw or …/quantity_value|raw.
|
This example is trivial and using |raw is not merited - it makes more sense where attributes are not supported by FLAT/STRUCTURED JSON.
The following example demonstrates a fully-populated DV_QUANTITY element, including the magnitude_status, normal_status and other_reference_range attributes which are not supported by FLAT/STRUCTURED JSON.
{
"@class": "DV_QUANTITY",
"normal_range": {
"@class": "DV_INTERVAL",
"lower": {
"@class": "DV_QUANTITY",
"magnitude": 2.5,
"units": "mmol/l"
},
"upper": {
"@class": "DV_QUANTITY",
"magnitude": 6.6,
"units": "mmol/l"
},
"lower_unbounded": false,
"upper_unbounded": false
},
"other_reference_ranges": [
{
"@class": "REFERENCE_RANGE",
"meaning": {
"@class": "DV_TEXT",
"value": "Age-sex appropriate range"
},
"range": {
"@class": "DV_INTERVAL",
"lower": {
"@class": "DV_QUANTITY",
"magnitude": 2.5,
"units": "mmol/l"
},
"upper": {
"@class": "DV_QUANTITY",
"magnitude": 6.6,
"units": "mmol/l"
},
"lower_unbounded": false,
"upper_unbounded": false
}
}
],
"normal_status": {
"@class": "CODE_PHRASE",
"terminology_id": {
"@class": "TERMINOLOGY_ID",
"value": "openehr"
},
"code_string": "LL"
},
"magnitude_status": ">=",
"magnitude": 7.4,
"units": "mmol/l"
}|
💡
|
This snippet may be helpful to use as a template in code, to populate the structure correctly before stringifying. |
{ "laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:1/result_value/value2|raw": "{{Flattened-escaped_RAW_value}}"
}-
Remove any newlines, tabs or other whitespace
"{"@class":"DV_QUANTITY","normal_range":{"@class":"DV_INTERVAL","lower":{"@class":"DV_QUANTITY","magnitude":2.5,"units":"mmol/l"},"upper":{"@class":"DV_QUANTITY","magnitude":6.6,"units":"mmol/l"},"lower_unbounded":false,"upper_unbounded":false},"other_reference_ranges":[{"@class":"REFERENCE_RANGE","meaning":{"@class":"DV_TEXT","value":"Age-sex appropriate range"},"range":{"@class":"DV_INTERVAL","lower":{"@class":"DV_QUANTITY","magnitude":2.5,"units":"mmol/l"},"upper":{"@class":"DV_QUANTITY","magnitude":6.6,"units":"mmol/l"},"lower_unbounded":false,"upper_unbounded":false}}],"normal_status":{"@class":"CODE_PHRASE","terminology_id":{"@class":"TERMINOLOGY_ID","value":"openehr"},"code_string":"LL"},"magnitude_status":">=","magnitude":7.4,"units":"mmol/l"}"-
Escape any double-quote characters or other reserved JSON characters.
"{\"@class\":\"DV_QUANTITY\",\"normal_range\":{\"@class\":\"DV_INTERVAL\",\"lower\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":2.5,\"units\":\"mmol/l\"},\"upper\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":6.6,\"units\":\"mmol/l\"},\"lower_unbounded\":false,\"upper_unbounded\":false},\"other_reference_ranges\":[{\"@class\":\"REFERENCE_RANGE\",\"meaning\":{\"@class\":\"DV_TEXT\",\"value\":\"Age-sex appropriate range\"},\"range\":{\"@class\":\"DV_INTERVAL\",\"lower\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":2.5,\"units\":\"mmol/l\"},\"upper\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":6.6,\"units\":\"mmol/l\"},\"lower_unbounded\":false,\"upper_unbounded\":false}}],\"normal_status\":{\"@class\":\"CODE_PHRASE\",\"terminology_id\":{\"@class\":\"TERMINOLOGY_ID\",\"value\":\"openehr\"},\"code_string\":\"LL\"},\"magnitude_status\":\">=\",\"magnitude\":7.4,\"units\":\"mmol/l\"}"-
Add the escaped.flattened JSON string to the value2|raw attribute of the appropriate element.
{
"laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:1/result_value/value2|raw": "{\"@class\":\"DV_QUANTITY\",\"normal_range\":{\"@class\":\"DV_INTERVAL\",\"lower\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":2.5,\"units\":\"mmol/l\"},\"upper\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":6.6,\"units\":\"mmol/l\"},\"lower_unbounded\":false,\"upper_unbounded\":false},\"other_reference_ranges\":[{\"@class\":\"REFERENCE_RANGE\",\"meaning\":{\"@class\":\"DV_TEXT\",\"value\":\"Age-sex appropriate range\"},\"range\":{\"@class\":\"DV_INTERVAL\",\"lower\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":2.5,\"units\":\"mmol/l\"},\"upper\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":6.6,\"units\":\"mmol/l\"},\"lower_unbounded\":false,\"upper_unbounded\":false}}],\"normal_status\":{\"@class\":\"CODE_PHRASE\",\"terminology_id\":{\"@class\":\"TERMINOLOGY_ID\",\"value\":\"openehr\"},\"code_string\":\"LL\"},\"magnitude_status\":\">=\",\"magnitude\":7.4,\"units\":\"mmol/l\"}"
}An example of a full INPUT FLAT JSON composition containing an element using the |raw attribute.
{
"ctx/language": "en",
"ctx/territory": "GB",
"ctx/composer_name": "Silvia Blake",
"ctx/time": "2017-10-26T18:49:55.770+01:00",
"ctx/id_namespace": "HOSPITAL-NS",
"ctx/id_scheme": "HOSPITAL-NS",
"ctx/participation_name": "Dr. Marcus Johnson",
"ctx/participation_function": "requester",
"ctx/participation_mode": "face-to-face communication",
"ctx/participation_id": "199",
"ctx/participation_name:1": "Lara Markham",
"ctx/participation_function:1": "performer",
"ctx/participation_id:1": "198",
"ctx/health_care_facility|name": "Hospital",
"ctx/health_care_facility|id": "9091",
"laboratory_result_report/context/report_id": "Report ID 52",
"laboratory_result_report/laboratory_test:0/requested_test": "Requested Test 83",
"laboratory_result_report/laboratory_test:0/specimen:0/specimen_type": "Specimen type 23",
"laboratory_result_report/laboratory_test:0/specimen:0/datetime_collected": "2017-10-26T18:49:55.77+01:00",
"laboratory_result_report/laboratory_test:0/specimen:0/collection_method": "Collection method 95",
"laboratory_result_report/laboratory_test:0/specimen:0/processing/datetime_received": "2017-10-26T18:49:55.77+01:00",
"laboratory_result_report/laboratory_test:0/specimen:0/processing/laboratory_specimen_identifier": "02aac0e8-30a3-4d04-a046-1189e6aaffb5",
"laboratory_result_report/laboratory_test:0/specimen:0/processing/laboratory_specimen_identifier|issuer": "Issuer",
"laboratory_result_report/laboratory_test:0/specimen:0/processing/laboratory_specimen_identifier|assigner": "Assigner",
"laboratory_result_report/laboratory_test:0/specimen:0/processing/laboratory_specimen_identifier|type": "Prescription",
"laboratory_result_report/laboratory_test:0/test_status|code": "at0107",
"laboratory_result_report/laboratory_test:0/test_status_timestamp": "2017-10-26T18:49:55.77+01:00",
"laboratory_result_report/laboratory_test:0/clinical_information_provided": "Clinical information provided 58",
"laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:0/result_value/value2|magnitude": "83",
"laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:0/result_value/value2|unit": "g",
"laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:0/comment": "Comment 33",
"laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:0/reference_range_guidance": "Reference range guidance 5",
"laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:1/result_value/value2|raw": "{\"@class\":\"DV_QUANTITY\",\"normal_range\":{\"@class\":\"DV_INTERVAL\",\"lower\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":2.5,\"units\":\"mmol/l\"},\"upper\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":6.6,\"units\":\"mmol/l\"},\"lower_unbounded\":false,\"upper_unbounded\":false},\"other_reference_ranges\":[{\"@class\":\"REFERENCE_RANGE\",\"meaning\":{\"@class\":\"DV_TEXT\",\"value\":\"Age-sex appropriate range\"},\"range\":{\"@class\":\"DV_INTERVAL\",\"lower\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":2.5,\"units\":\"mmol/l\"},\"upper\":{\"@class\":\"DV_QUANTITY\",\"magnitude\":6.6,\"units\":\"mmol/l\"},\"lower_unbounded\":false,\"upper_unbounded\":false}}],\"normal_status\":{\"@class\":\"CODE_PHRASE\",\"terminology_id\":{\"@class\":\"TERMINOLOGY_ID\",\"value\":\"openehr\"},\"code_string\":\"LL\"},\"magnitude_status\":\">=\",\"magnitude\":7.4,\"units\":\"mmol/l\"}",
"laboratory_result_report/laboratory_test:0/laboratory_test_panel:0/laboratory_result:0/result_status|code": "at0008",
"laboratory_result_report/laboratory_test:0/conclusion": "Conclusion 24",
"laboratory_result_report/laboratory_test:0/responsible_laboratory/name_of_organisation": "Name of Organisation 13",
"laboratory_result_report/laboratory_test:0/test_request_details/placer_order_number": "6b9ccde5-573f-4f03-8bff-21e9122e3695",
"laboratory_result_report/laboratory_test:0/test_request_details/placer_order_number|issuer": "Issuer",
"laboratory_result_report/laboratory_test:0/test_request_details/placer_order_number|assigner": "Assigner",
"laboratory_result_report/laboratory_test:0/test_request_details/placer_order_number|type": "Prescription",
"laboratory_result_report/laboratory_test:0/test_request_details/filler_order_number": "db267a4e-205a-4489-b024-8e07469ca226",
"laboratory_result_report/laboratory_test:0/test_request_details/filler_order_number|issuer": "Issuer",
"laboratory_result_report/laboratory_test:0/test_request_details/filler_order_number|assigner": "Assigner",
"laboratory_result_report/laboratory_test:0/test_request_details/filler_order_number|type": "Prescription",
"laboratory_result_report/laboratory_test:0/test_request_details/requester/ordering_provider/ordering_provider/given_name": "Given name 86",
"laboratory_result_report/laboratory_test:0/test_request_details/requester/ordering_provider/ordering_provider/family_name": "Family name 17",
"laboratory_result_report/laboratory_test:0/test_request_details/requester/professional_identifier": "050a7d61-ab0f-4286-a65f-25e2114a9609",
"laboratory_result_report/laboratory_test:0/test_request_details/requester/professional_identifier|issuer": "Issuer",
"laboratory_result_report/laboratory_test:0/test_request_details/requester/professional_identifier|assigner": "Assigner",
"laboratory_result_report/laboratory_test:0/test_request_details/requester/professional_identifier|type": "Prescription",
"laboratory_result_report/patient_comment/comment": "Comment 21",
"laboratory_result_report/category|code": "433",
"laboratory_result_report/category|value": "event"
}For reference, this is an example of a RAW JSON openEHR laboratory result composition shows typical content for a laboratory result.
{
"@class": "COMPOSITION",
"name": {
"@class": "DV_TEXT",
"value": "Laboratory Result Report"
},
"uid": {
"@class": "OBJECT_VERSION_ID",
"value": "fafb0d70-7269-4895-99bd-55fb41b5a638::ntgmc.oprn1.ehrscape.com::1"
},
"archetype_details": {
"@class": "ARCHETYPED",
"archetype_id": {
"@class": "ARCHETYPE_ID",
"value": "openEHR-EHR-COMPOSITION.report-result.v1"
},
"template_id": {
"@class": "TEMPLATE_ID",
"value": "GEL - Generic Lab Report import.v0"
},
"rm_version": "1.0.1"
},
"archetype_node_id": "openEHR-EHR-COMPOSITION.report-result.v1",
"language": {
"@class": "CODE_PHRASE",
"terminology_id": {
"@class": "TERMINOLOGY_ID",
"value": "ISO_639-1"
},
"code_string": "en"
},
"territory": {
"@class": "CODE_PHRASE",
"terminology_id": {
"@class": "TERMINOLOGY_ID",
"value": "ISO_3166-1"
},
"code_string": "GB"
},
"category": {
"@class": "DV_CODED_TEXT",
"value": "event",
"defining_code": {
"@class": "CODE_PHRASE",
"terminology_id": {
"@class": "TERMINOLOGY_ID",
"value": "openehr"
},
"code_string": "433"
}
},
"composer": {
"@class": "PARTY_IDENTIFIED",
"name": "Silvia Blake"
},
"context": {
"@class": "EVENT_CONTEXT",
"start_time": {
"@class": "DV_DATE_TIME",
"value": "2017-10-26T18:49:55.77+01:00"
},
"setting": {
"@class": "DV_CODED_TEXT",
"value": "other care",
"defining_code": {
"@class": "CODE_PHRASE",
"terminology_id": {
"@class": "TERMINOLOGY_ID",
"value": "openehr"
},
"code_string": "238"
}
},
"other_context": {
"@class": "ITEM_TREE",
"name": {
"@class": "DV_TEXT",
"value": "Tree"
},
"archetype_node_id": "at0001",
"items": [
{
"@class": "ELEMENT",
"name": {
"@class": "DV_TEXT",
"value": "Report ID"
},
"archetype_node_id": "at0002",
"value": {
"@class": "DV_TEXT",
"value": "Report ID 52"
}
}
]
},
"health_care_facility": {
"@class": "PARTY_IDENTIFIED",
"external_ref": {
"@class": "PARTY_REF",
"id": {
"@class": "GENERIC_ID",
"value": "9091",
"scheme": "HOSPITAL-NS"
},
"namespace": "HOSPITAL-NS",
"type": "PARTY"
},
"name": "Hospital"
}
},
"content": [
{
"@class": "OBSERVATION",
"name": {
"@class": "DV_TEXT",
"value": "Laboratory test"
},
"archetype_details": {
"@class": "ARCHETYPED",
"archetype_id": {
"@class": "ARCHETYPE_ID",
"value": "openEHR-EHR-OBSERVATION.laboratory_test.v0"
},
"rm_version": "1.0.1"
},
"archetype_node_id": "openEHR-EHR-OBSERVATION.laboratory_test.v0",
"language": {
"@class": "CODE_PHRASE",
"terminology_id": {
"@class": "TERMINOLOGY_ID",
"value": "ISO_639-1"
},
"code_string": "en"
},
"encoding": {
"@class": "CODE_PHRASE",
"terminology_id": {
"@class": "TERMINOLOGY_ID",
"value": "IANA_character-sets"
},
"code_string": "UTF-8"
},
"subject": {
"@class": "PARTY_SELF"
},
"other_participations": [
{
"@class": "PARTICIPATION",
"function": {
"@class": "DV_TEXT",
"value": "requester"
},
"performer": {
"@class": "PARTY_IDENTIFIED",
"external_ref": {
"@class": "PARTY_REF",
"id": {
"@class": "GENERIC_ID",
"value": "199",
"scheme": "HOSPITAL-NS"
},
"namespace": "HOSPITAL-NS",
"type": "ANY"
},
"name": "Dr. Marcus Johnson"
},
"mode": {
"@class": "DV_CODED_TEXT",
"value": "face-to-face communication",
"defining_code": {
"@class": "CODE_PHRASE",
"terminology_id": {
"@class": "TERMINOLOGY_ID",
"value": "openehr"
},
"code_string": "216"
}
}
},
{
"@class": "PARTICIPATION",
"function": {
"@class": "DV_TEXT",
"value": "performer"
},
"performer": {
"@class": "PARTY_IDENTIFIED",
"external_ref": {
"@class": "PARTY_REF",
"id": {
"@class": "GENERIC_ID",
"value": "198",
"scheme": "HOSPITAL-NS"
},
"namespace": "HOSPITAL-NS",
"type": "ANY"
},
"name": "Lara Markham"
},
"mode": {
"@class": "DV_CODED_TEXT",
"value": "not specified",
"defining_code": {
"@class": "CODE_PHRASE",
"terminology_id": {
"@class": "TERMINOLOGY_ID",
"value": "openehr"
},
"code_string": "193"
}
}
}
],
"protocol": {
"@class": "ITEM_TREE",
"name": {
"@class": "DV_TEXT",
"value": "Tree"
},
"archetype_node_id": "at0004",
"items": [
{
"@class": "CLUSTER",
"name": {
"@class": "DV_TEXT",
"value": "Responsible laboratory"
},
"archetype_details": {
"@class": "ARCHETYPED",
"archetype_id": {
"@class": "ARCHETYPE_ID",
"value": "openEHR-EHR-CLUSTER.organisation.v1"
},
"rm_version": "1.0.1"
},
"archetype_node_id": "openEHR-EHR-CLUSTER.organisation.v1",
"items": [
{
"@class": "ELEMENT",
"name": {
"@class": "DV_TEXT",
"value": "Name of Organisation"
},
"archetype_node_id": "at0001",
"value": {
"@class": "DV_TEXT",
"value": "Name of Organisation 13"
}
}
]
},
{
"@class": "CLUSTER",
"name": {
"@class": "DV_TEXT",
"value": "Test request details"
},
"archetype_node_id": "at0094",
"items": [
{
"@class": "ELEMENT",
"name": {
"@class": "DV_TEXT",
"value": "Placer order number"
},
"archetype_node_id": "at0062",
"value": {
"@class": "DV_IDENTIFIER",
"issuer": "Issuer",
"assigner": "Assigner",
"id": "6b9ccde5-573f-4f03-8bff-21e9122e3695",
"type": "Prescription"
}
},
{
"@class": "ELEMENT",
"name": {
"@class": "DV_TEXT",
"value": "Filler order number"
},
"archetype_node_id": "at0063",
"value": {
"@class": "DV_IDENTIFIER",
"issuer": "Issuer",
"assigner": "Assigner",
"id": "db267a4e-205a-4489-b024-8e07469ca226",
"type": "Prescription"
}
},
{
"@class": "CLUSTER",
"name": {
"@class": "DV_TEXT",
"value": "Requester"
},
"archetype_details": {
"@class": "ARCHETYPED",
"archetype_id": {
"@class": "ARCHETYPE_ID",
"value": "openEHR-EHR-CLUSTER.individual_professional.v1"
},
"rm_version": "1.0.1"
},
"archetype_node_id": "openEHR-EHR-CLUSTER.individual_professional.v1",
"items": [
{
"@class": "CLUSTER",
"name": {
"@class": "DV_TEXT",
"value": "Ordering provider"
},
"archetype_details": {
"@class": "ARCHETYPED",
"archetype_id": {
"@class": "ARCHETYPE_ID",
"value": "openEHR-EHR-CLUSTER.person_name.v1"
},
"rm_version": "1.0.1"
},
"archetype_node_id": "openEHR-EHR-CLUSTER.person_name.v1",
"items": [
{
"@class": "CLUSTER",
"name": {
"@class": "DV_TEXT",
"value": "Ordering provider"
},
"archetype_node_id": "at0002",
"items": [
{
"@class": "ELEMENT",
"name": {
"@class": "DV_TEXT",
"value": "Given name"
},
"archetype_node_id": "at0003",
"value": {
"@class": "DV_TEXT",
"value": "Given name 86"
}
},
{
"@class": "ELEMENT",
"name": {
"@class": "DV_TEXT",
"value": "Family name"
},
"archetype_node_id": "at0005",
"value": {
"@class": "DV_TEXT",
"value": "Family name 17"
}
}
]
}
]
},
{
"@class": "ELEMENT",
"name": {
"@class": "DV_TEXT",
"value": "Professional Identifier"
},
"archetype_node_id": "at0011",
"value": {
"@class": "DV_IDENTIFIER",
"issuer": "Issuer",
"assigner": "Assigner",
"id": "050a7d61-ab0f-4286-a65f-25e2114a9609",
"type": "Prescription"
}
}
]
}
]
}
]
},
"data": {
"@class": "HISTORY",
"name": {
"@class": "DV_TEXT",
"value": "Event Series"
},
"archetype_node_id": "at0001",
"origin": {
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