Aberowl is a framework for ontology-based data access that consists of an ontology repository that can be queried through an OWL 2 EL reasoner. Aberowl is hosted on aber-owl.net.

The Aberowl API is organized around Open API specifications. Our API is a RESTful API that has predictable resource URIs, accepts form-encoded, request bodies, returns JSON responses. The complete API documentation is available here.

You will need the following list of tools installed before we could run aberowl framework.

• Linux debian or RHEL
• Python 3..
• Groovy
• PostgreSQL
• RabbitMq
• Redis
• Memcached
• Elasticsearch
• Supervisor

Firstly, you will need to download aberowl from github and extract the source to opt/aberowl folder. Aberowl directory path will look like the following:

/opt/aberowl/aberowlweb

To install aberowl we will first setup a virtual enviroment to install framework dependencies in an isolated environment. Run the following commands to install:

pip install virtualenv

After installing the virtual environment, we will create the virtual environment in application folder.

# Navigate to aberowl application folder 
cd /opt/aberowl/aberowlweb

# Create a virtual environment with name 'venv'
virtualenv venv

# Run the virtual environment
source venv/bin/activate

To install aberowl dependencies, you can run simply the following command:

pip install -r .\requirements.txt

Create a database with name aberowlweb.

Aberowl is currently consist of two of modules:

Aberowl Web module uses Celery to distribute tasks to ontology API module. Here is the command to run the celery module:

celery -A aberowlweb -l INFO worker

To run ontology API, run the following command. By default, the ontology API runs on 8080 port:

python manage.py runontapi

To run Aberowl web application, run the following command. By default, it runs on 8000 port:

python manage.py runserver

You can now use the URL: http://localhost:8000 to access Aberowl.