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Definition API (latest)

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Specifications Editorial Committee openEHR: info@openehr.org URL: https://specifications.openehr.org/ License: Creative Commons Attribution-NoDerivs 3.0 Unported

Purpose

This specification describes service endpoints, resources and operations as well as details of requests and responses that interacts with Definition openEHR API in a RESTful manner.

Prerequisite documents for reading this document include:

Related documents include:

Status

This specification is in the STABLE state, and can be downloaded as OpenAPI specification file (in YAML format) for validation, or for code generators. Users are encouraged to comment on and/or advise on these paragraphs as well as the main content.

The development version of this document can be found at https://specifications.openehr.org/releases/ITS-REST/latest/definition.html.

Feedback

Feedback may be provided on the Implementation Technology Specifications forum.

Issues may be raised on the specifications Problem Report tracker.

To see changes made due to previously reported issues, see the ITS component Change Request tracker.

ADL1.4 TEMPLATE

Management of AOM and ADL 1.4 Operational Templates (OPTs). These templates can be created using modelling tools such as the Template Designer and the Archetype Designer.

Operational templates simplify the creation of openEHR-based input or storage implementations by, for a specific COMPOSITION template (use case), collecting all labels, requirements and constraints from all contained archetypes and sub-templates into a single easily parsed file. This file can be a basis for UI-generation/creation and for data validation.

Upload a template

Upload a new ADL 1.4 operational template (OPT).

header Parameters
Prefer
string
Default: return=minimal
Enum: "return=representation" "return=minimal"

Request header to indicate the preference over response details. The response will contain the entire resource when the Prefer header has a value of return=representation.

Request Body schema: application/xml
required
One of
object (OPERATIONAL_TEMPLATE)

Responses

Request samples

Content type
application/xml
<template xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.openehr.org/v1">
    <language>
        <terminology_id>
            <value>ISO_639-1</value>
        </terminology_id>
        <code_string>en</code_string>
    </language>
    <description>
        <original_author id="Original Author">Not Specified</original_author>
        <lifecycle_state>Initial</lifecycle_state>
        <other_details id="MetaDataSet:Sample Set ">Template metadata sample set</other_details>
        <other_details id="Acknowledgements"></other_details>
        <other_details id="Business Process Level"></other_details>
        <other_details id="Care setting"></other_details>
        <other_details id="Client group"></other_details>
        <other_details id="Clinical Record Element"></other_details>
        <other_details id="Copyright"></other_details>
        <other_details id="Issues"></other_details>
        <other_details id="Owner"></other_details>
        <other_details id="Sign off"></other_details>
        <other_details id="Speciality"></other_details>
        <other_details id="User roles"></other_details>
        <details>
            <language>
                <terminology_id>
                    <value>ISO_639-1</value>
                </terminology_id>
                <code_string>en</code_string>
            </language>
            <purpose>Not Specified</purpose>
        </details>
    </description>
    <uid>
        <value>b4d7f203-b329-4e89-a58a-c605b19e94de</value>
    </uid>
    <template_id>
        <value>Vital Signs</value>
    </template_id>
    <concept>Vital Signs</concept>
    <definition>
        <rm_type_name>COMPOSITION</rm_type_name>
        <occurrences>
            <lower_included>true</lower_included>
            <upper_included>true</upper_included>
            <lower_unbounded>false</lower_unbounded>
            <upper_unbounded>false</upper_unbounded>
            <lower>1</lower>
            <upper>1</upper>
        </occurrences>
        <node_id>at0000</node_id>
        ...

List templates

List the available ADL 1.4 operational templates (OPT) on the system.

Responses

Response samples

Content type
application/json
[
  • {
    }
]

Get a template

Retrieves the ADL 1.4 operational template (OPT) identified by template_id identifier.

Note that this can return either the original (canonical) XML based OPT format (if called with the Accept: application/xml request header), as well as the simplified JSON-based “web template” format (if called with the Accept: application/openehr.wt+json request header). For more details see the data representation specification.

path Parameters
template_id
required
string
Example: Vital Signs

Template identifier.

header Parameters
Accept
required
string
Enum: "application/json" "application/xml" "text/plain" "application/openehr.wt+json"
Example: application/xml

Header to indicate the expected response format.

Responses

Response samples

Content type
<template xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.openehr.org/v1">
    <language>
        <terminology_id>
            <value>ISO_639-1</value>
        </terminology_id>
        <code_string>en</code_string>
    </language>
    <description>
        <original_author id="Original Author">Not Specified</original_author>
        <lifecycle_state>Initial</lifecycle_state>
        <other_details id="MetaDataSet:Sample Set ">Template metadata sample set</other_details>
        <other_details id="Acknowledgements"></other_details>
        <other_details id="Business Process Level"></other_details>
        <other_details id="Care setting"></other_details>
        <other_details id="Client group"></other_details>
        <other_details id="Clinical Record Element"></other_details>
        <other_details id="Copyright"></other_details>
        <other_details id="Issues"></other_details>
        <other_details id="Owner"></other_details>
        <other_details id="Sign off"></other_details>
        <other_details id="Speciality"></other_details>
        <other_details id="User roles"></other_details>
        <details>
            <language>
                <terminology_id>
                    <value>ISO_639-1</value>
                </terminology_id>
                <code_string>en</code_string>
            </language>
            <purpose>Not Specified</purpose>
        </details>
    </description>
    <uid>
        <value>b4d7f203-b329-4e89-a58a-c605b19e94de</value>
    </uid>
    <template_id>
        <value>Vital Signs</value>
    </template_id>
    <concept>Vital Signs</concept>
    <definition>
        <rm_type_name>COMPOSITION</rm_type_name>
        <occurrences>
            <lower_included>true</lower_included>
            <upper_included>true</upper_included>
            <lower_unbounded>false</lower_unbounded>
            <upper_unbounded>false</upper_unbounded>
            <lower>1</lower>
            <upper>1</upper>
        </occurrences>
        <node_id>at0000</node_id>
        ...

ADL2 TEMPLATE

empty

Query

List stored queries

Retrieves list of all stored queries on the system matched by qualified_query_name as pattern.

If pattern should given be in the format of [{namespace}::]{query-name}, and when is empty, it will be treated as "wildcard" in the search.

Examples:

  • GET https://openEHRSys.example.com/v1/definition/query/org.openehr will list all versions of all queries with names starting with org.openehr
  • GET https://openEHRSys.example.com/v1/definition/query/org.openehr::compositions will list all versions of the query named org.openehr::compositions
path Parameters
qualified_query_name
required
string (QueryName)
Example: org.openehr::compositions

The (fully qualified) name of the query to be executed, in a format of [{namespace}::]{query-name}.

Responses

Response samples

Content type
application/json
[
  • {
    },
  • {
    }
]

Store a query

Stores a new query, or updates an existing query on the system.

path Parameters
qualified_query_name
required
string (QueryName)
Example: org.openehr::compositions

The (fully qualified) name of the query to be executed, in a format of [{namespace}::]{query-name}.

query Parameters
query_type
string
Default: "AQL"
Example: query_type=AQL

Parameter indicating the query language/type.

Request Body schema: text/plain
required
string (AQL)

The given AQL query.

Responses

Request samples

Content type
text/plain
SELECT c FROM
  EHR e
    CONTAINS COMPOSITION c[openEHR-EHR-COMPOSITION.encounter.v1]
      CONTAINS OBSERVATION obs[openEHR-EHR-OBSERVATION.blood_pressure.v1]
WHERE
  obs/data[at0001]/events[at0006]/data[at0003]/items[at0004]/value/magnitude >= $systolic_bp

Store a query version

Stores a query, at a specified version, on the system.

path Parameters
qualified_query_name
required
string (QueryName)
Example: org.openehr::compositions

The (fully qualified) name of the query to be executed, in a format of [{namespace}::]{query-name}.

version
required
string
Example: 1.0

A SEMVER version number. This can be a an exact version (e.g. 1.7.1), or a pattern as partial prefix, in a form of {major} or {major}.{minor} (e.g. 1 or 1.0), in which case the highest (latest) version matching the prefix will be considered.

query Parameters
query_type
string
Default: "AQL"
Example: query_type=AQL

Parameter indicating the query language/type.

Request Body schema: text/plain
required
string (AQL)

The given AQL query.

Responses

Request samples

Content type
text/plain
SELECT c FROM
  EHR e
    CONTAINS COMPOSITION c[openEHR-EHR-COMPOSITION.encounter.v1]
      CONTAINS OBSERVATION obs[openEHR-EHR-OBSERVATION.blood_pressure.v1]
WHERE
  obs/data[at0001]/events[at0006]/data[at0003]/items[at0004]/value/magnitude >= $systolic_bp

Get stored query at version

Retrieves the definition of a particular stored query (at specified version) and its associated metadata.

path Parameters
qualified_query_name
required
string (QueryName)
Example: org.openehr::compositions

The (fully qualified) name of the query to be executed, in a format of [{namespace}::]{query-name}.

version
required
string
Example: 1.0

A SEMVER version number. This can be a an exact version (e.g. 1.7.1), or a pattern as partial prefix, in a form of {major} or {major}.{minor} (e.g. 1 or 1.0), in which case the highest (latest) version matching the prefix will be considered.

Responses

Response samples

Content type
application/json
{
  • "name": "org.openehr::compositions",
  • "type": "aql",
  • "version": "1.0.1",
  • "saved": "2017-07-16T19:20:30.450+01:00",
  • "q": "SELECT c FROM EHR e[ehr_id/value=$ehr_id] CONTAINS COMPOSITION c[$compositionid] WHERE c/name/value = 'Vitals'"
}

Template list

This resource represents the list of Template meta-information associated with uploaded templates - see also Service Model - Definition Package.

Array
template_id
required
string
version
string
concept
required
string
archetype_id
required
string
created_timestamp
required
string
[
  • {
    }
]

Template

The following resources are formally specified in the Archetype Model as AOM/ADL 1.4 Operational Templates (OPTs) and as AOM2 templates.

The AOM/ADL 1.4 OPERATIONAL_TEMPLATE resource:

object (OPERATIONAL_TEMPLATE)
{ }

The WebTemplate alternative resource:

templateId
required
string
version
required
string
defaultLanguage
required
string
languages
required
Array of strings
required
object (Tree)
{
  • "templateId": "string",
  • "version": "string",
  • "defaultLanguage": "string",
  • "languages": [
    ],
  • "tree": {
    }
}

Stored Query

This resource represents the definition of a stored Query and is formally specified in the Service Model as Registered Queries.

name
required
string (QueryName)

The (fully qualified) name of the query (when is registered as a stored query), in a format of [{namespace}::]{query-name}. The namespace prefix is optional, and when used it should be in a form of a reverse domain name.

type
required
string (QueryType)
Default: "AQL"

Query formalism type.

version
required
string (QueryVersion)

The SEMVER version number of the Stored Query.

saved
required
string <date-time>
q
required
string (AQL)

The given AQL query.

{
  • "name": "org.openehr::compositions",
  • "type": "aql",
  • "version": "1.0.1",
  • "saved": "2017-07-16T19:20:30.450+01:00",
  • "q": "SELECT c FROM EHR e[ehr_id/value=$ehr_id] CONTAINS COMPOSITION c[$compositionid] WHERE c/name/value = 'Vitals'"
}