Arena EHR Server is a implementation of the openEHR service interface. Most important is the implementation of AQL (Archetype Query Language). The server is implemented in .NET by DIPS ASA.
This repository contains the API definition (swagger.yaml). The API is auto generated from code to swagger.
Take a look at the content in Apiary at http://docs.arenaehr.apiary.io/
The following AQL returns the latest two temperatures in the openEHR server.
select
a_a/data[at0002]/events[at0003]/time as When,
a_a/data[at0002]/events[at0003]/data[at0001]/items[at0004]/value as Temperature
from EHR e contains COMPOSITION a CONTAINS OBSERVATION a_a[openEHR-EHR-OBSERVATION.body_temperature.v1]
order by a_a/data[at0002]/events[at0003]/time desc
offset 0 limit 2The result from such a query will look like this:
<?xml version="1.0" encoding="utf-8"?>
<!--DIPS.OpenEhr.ResultSets.Serialization.Xml.ResultSetXmlWriter (5.0.0.0)-->
<resultSet xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.openehr.org/v1">
<correlationid>00000000-0000-0000-0000-000000000000</correlationid>
<totalResults>2</totalResults>
<columns>
<name>When</name>
<path>/data[at0002]/events[at0003]/time</path>
</columns>
<columns>
<name>Temperature</name>
<path>/data[at0002]/events[at0003]/data[at0001]/items[at0004]/value</path>
</columns>
<rows>
<row>
<items xsi:type="DV_DATE_TIME">
<value>2016-06-08T11:02:47+02:00</value>
</items>
<items xsi:type="DV_QUANTITY">
<magnitude>38</magnitude>
<units>°C</units>
</items>
</row>
<row>
<items xsi:type="DV_DATE_TIME">
<value>2016-06-05T08:53:36+02:00</value>
</items>
<items xsi:type="DV_QUANTITY">
<magnitude>37</magnitude>
<units>Cel</units>
</items>
</row>
</rows>
<tags />
</resultSet>{
"@class": "RESULTSET",
"@schemaversion": "0.1.0",
"@type": "raw",
"@created": "2016-06-22T07:54:04.758+02:00",
"@generator": "DIPS.OpenEhr.ResultSets.Serialization.Json.ResultSetJsonWriter (5.0.0.0)",
"name": null,
"correlationid": "00000000-0000-0000-0000-000000000000",
"totalResults": 2,
"columns": [
{
"name": "When",
"path": "/data[at0002]/events[at0003]/time"
},
{
"name": "Temperature",
"path": "/data[at0002]/events[at0003]/data[at0001]/items[at0004]/value"
}
],
"rows": [
[
{
"@class": "DV_DATE_TIME",
"value": "2016-06-08T11:02:47+02:00"
},
{
"@class": "DV_QUANTITY",
"magnitude": 38.0,
"units": "°C"
}
],
[
{
"@class": "DV_DATE_TIME",
"value": "2016-06-05T08:53:36+02:00"
},
{
"@class": "DV_QUANTITY",
"magnitude": 37.0,
"units": "Cel"
}
]
]
}