v3.4.2-beta

Bugfixes when working with EMMO

v3.4.1-beta

• Added the yaml2camelcase to convert the entity names of yaml ontologies to camel case.
• Fixed ontology2dot
• Updated an example with postgresql
• Fixed a bug when trying to clear an empty database
• Improved error messages of pico
• Add easy way to serialize CUDS objects: osp.core.utils.serialize / desierialize
• added method to delete cuds objects recursively and fixed a bug that made this impossible
• Cleaned up source code files
• Fixed utils.getrdfgraph
• default relationship can now refer to different namespace

v3.4.0-beta

OWL is now integrated in osp-core.

Use pico install emmo to install EMMO. To integrate your own owl ontology create a file similar to osp/core/ontology/docs/emmo.yml.

Small example:

>>> from osp.core.namespaces import math
>>> math.Numerical.attributes
{<OntologyAttribute math.hasNumericalData>: None}
>>> x = math.Numerical(hasNumericalData=12)
>>> x
<math.Numerical: c11cc272-cdcf-421a-8838-5f177b065746,  CoreSession: @0x7f1987173190>
>>> x.hasNumericalData
12

The changes are mostly backwards compatible, although you will probably get some warnings. To get rid of the warnings:

• from osp.core import namespace is now from osp.core.namespaces import namespace
• In the YAML ontology, the entity names need no longer be ALL_CAPS
• If you reference entities from code, you have to match the case of the entities as defined in the ontology.