README
Last updated
Last updated
Snow Owl® is a highly scalable, open source terminology server with revision-control capabilities and collaborative authoring platform features. It allows you to store, search and author high volumes of terminology artifacts quickly and efficiently.
Features include:
Revision-controlled authoring
Maintains multiple versions (including unpublished and published) for each terminology artifact and provides APIs to access them all
Independent work branches offer work-in-process isolation, external business workflow integration and team collaboration
SNOMED CT and others
SNOMED CT terminology support
RF2 Release File Specification as of 2021-07-31
Support for Relationships with concrete values
Official and Custom Reference Sets
Expression Constraint Language v1.4.0 ,
Compositional Grammar 2.3.1 ,
Expression Template Language 1.0.0 ,
Query Language Draft 0.1.0 ,
With its modular design, the server can maintain multiple terminologies (including local codes, mapping sets, value sets)
Various set of APIs
SNOMED CT API (RESTful and native Java API)
FHIR API R4 v4.0.1
CIS API 1.0
Highly extensible and configurable
Simple to use plug-in system makes it easy to develop and add new terminology tooling/API or any other functionality
Built on top of (highly scalable, distributed, open source search engine)
Connect to your existing cluster or use the embedded instance
All the power of Elasticsearch is available (full-text search support, monitoring, analytics and many more)
NOTE: You need to have a recent version of Java installed (Java 11+, https://adoptium.net/).
Once you have downloaded the appropriate package:
Run bin/snowowl.sh on unix, or bin/snowowl.bat on windows
Run curl http://localhost:8080/snowowl/admin/info
Navigate to http://localhost:8080/snowowl
Simply run the following command in the cloned directory. The Maven Wrapper will automatically download the required Maven version (and store it under ~/.m2/wrapper/dists).
The distribution packages can be found in the releng/com.b2international.snowowl.server.update/target folder, when the build is complete.
To run the test cases, use the following command:
These instructions will get Snow Owl up and running on your local machine for development and testing purposes.
Snow Owl is an Equinox-OSGi based server. To develop plug-ins for Snow Owl you need to use Eclipse as IDE:
Download Eclipse IDE for Eclipse Committers 2020-09 package from here: https://www.eclipse.org/downloads/packages/release/2020-09/r/eclipse-ide-eclipse-committers
Required Eclipse plug-ins (install the listed features via Help -> Install New Software...):
Note: you may have to untick the Show only the latest versions of the available software checkbox to get older versions of a feature. Please use the exact version specified below, not the latest point release.
Xtext/Xtend (https://download.eclipse.org/modeling/tmf/xtext/updates/releases/2.23.0/)
Xtend IDE 2.23.0 (Xtext)
Xtext Complete SDK 2.23.0 (Xtext)
MWE2 (https://download.eclipse.org/modeling/emft/mwe/updates/releases/2.11.3/)
MWE SDK 1.5.3 (MWE)
MWE 2 language SDK 2.11.3 (MWE)
Groovy Development Tools (https://groovy.jfrog.io/artifactory/plugins-release-local/org/codehaus/groovy/groovy-eclipse-integration/3.9.0/e4.17/org.codehaus.groovy-3.9.0.v202009301344-e2009-RELEASE-updatesite.zip)
Eclipse Groovy Development Tools - 3.9.0
Groovy-Eclipse M2E integration - 3.9.0
Groovy Compiler 2.5 - 3.9.0
M2Eclipse (https://archive.eclipse.org/technology/m2e/releases/1.17.2/)
m2e 1.17.2
m2e PDE 1.17.2
Make sure you have the following preferences enabled/disabled.
Plug-in development API baseline errors is set to Ignored (Preferences > Plug-in Development > API Baselines)
The Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-clean-plugin:2.5:clean type of errors can be ignored or changed to Warnings in Preferences->Maven->Errors/Warnings.
Set the workspace encoding to UTF-8 (Preferences->General->Workspace)
Set the line endings to Unix style (Preferences->General->Workspace)
Make sure the Git line endings are set to input (Preferences->Team->Git->Configuration - add key if missing core.autocrlf = input)
Make sure the settings.xml in your ~/.m2/settings.xml location is updated with the content from the settings.xml from this repository's root folder.
Import all projects into your Eclipse workspace and wait for the build to complete
Select all projects and hit Alt + F5 and trigger an update to all Maven projects manually (to download dependencies from Maven)
Open the target-platform/target-platform-local.target file
Wait until Eclipse resolves the target platform (click on the Resolve button if it refuses to do so) and then click on Set as Active Target platform
Wait until the build is complete and you have no compile errors
Launch snow-owl-oss launch configuration in the Run Configurations menu
Navigate to http://localhost:8080/snowowl
Many other organizations have directly and indirectly contributed to Snow Owl, including: Singapore Ministry of Health; American Dental Association; University of Nebraska Medical Center (USA); Federal Public Service of Public Health (Belgium); Danish Health Data Authority; Health and Welfare Information Systems Centre (Estonia); Department of Health (Ireland); New Zealand Ministry of Health; Norwegian Directorate of eHealth; Integrated Health Information Systems (Singapore); National Board of Health and Welfare (Sweden); eHealth Suisse (Switzerland); and the National Library of Medicine (USA).
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This distribution only includes features licensed under the Apache 2.0 license. To get access to the full set of features, please contact .
View the detailed release notes .
Not the version you're looking for? View .
See ,
Snow Owl uses Maven for its build system. In order to create a distribution, you will only need the installed.
Please see for details.
Our use . You can find a chronologically ordered list of notable changes in .
This project is licensed under the Apache 2.0 License. See for details and refer to for additional licensing notes and uses of third-party components.
In March 2015, generously licensed the Snow Owl Terminology Server components supporting SNOMED CT. They subsequently made the licensed code available to their and the global community under an open-source license.
In March 2017, licensed the Snow Owl Terminology Server to support the mandatory adoption of SNOMED CT throughout all care settings in the United Kingdom by April 2020. In addition to driving the UK’s clinical terminology efforts by providing a platform to author national clinical codes, Snow Owl will support the maintenance and improvement of the dm+d drug extension which alone is used in over 156 million electronic prescriptions per month. Improvements to the terminology server made under this agreement will be made available to the global community.
