An extension for storing file with Apache Jena
ckanext-jena - Semantic data management extension
ckanext-jena is an extension for enabling the semantic aspect of CKAN with Apache Jena.
This extension provides an ability to let users store a certain semantic resource (e.g. rdf, ttl, owl) in Apache Jena and perform SPARQL semantic queries.
Apache Jena and Fuseki server need to be running.
jena_search_sparql api can be called with resource_id and q parameters for semantic queries.
This extension was developed and tested under CKAN-2.7.3 and Apache Jena-3.9.0
To install ckanext-jena:
Activate your CKAN virtual environment, for example:
Install the ckanext-jena Python package into your virtual environment:
pip install ckanext-jena
Add jena setting in your CKAN config file (by default the config file is located at /etc/ckan/default/production.ini) as follows:
ckan.plugins = jena <other-plugins> ckan.jena.fuseki.url = http://127.0.0.1:3030/ ckan.jena.fuseki.username = admin ckan.jena.fuseki.password = admin
Restart CKAN. For example if you’ve deployed CKAN with Apache on Ubuntu:
sudo service apache2 reload
To install ckanext-jena for development, activate your CKAN virtualenv and do:
git clone https://github.com/etri-odp/ckanext-jena.git cd ckanext-jena python setup.py develop pip install -r dev-requirements.txt
Running the Tests
To run the tests, do:
nosetests --nologcapture --with-pylons=test.ini
To run the tests and produce a coverage report, first make sure you have coverage installed in your virtualenv (pip install coverage) then run:
nosetests --nologcapture --with-pylons=test.ini --with-coverage --cover-package=ckanext.jena --cover-inclusive --cover-erase --cover-tests
Registering ckanext-jena on PyPI
ckanext-jena should be available on PyPI as https://pypi.python.org/pypi/ckanext-jena. If that link doesn’t work, then you can register the project on PyPI for the first time by following these steps:
Create a source distribution of the project:
python setup.py sdist
Register the project:
python setup.py register
Upload the source distribution to PyPI:
python setup.py sdist upload
Tag the first release of the project on GitHub with the version number from the setup.py file. For example if the version number in setup.py is 0.0.1 then do:
git tag 0.0.1 git push --tags
This work was supported by Institute for Information & communications Technology Promotion (IITP) grant funded by the Korea government (MSIT) (No.2017-00253, Development of an Advanced Open Data Distribution Platform based on International Standards)
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