Currently the only way for application to add a YANG schema is either via ODL yang bundle which require build or by installing a OSGI bundle with yang folder (META-INF/yang/*.yang).

MDSAL should expose API for allowing adding arbitrary schema files which can be used for validating/storing yang based objects.

The SchemaService has addModule API which is currently not supported. the main use case is to allow developing ODL application which allow dynamically using new schema files without necessity of building/installing bundles. in a sense is similarly to netconf mounting with the difference that is not limited only to netconf.