There's following JPA Problem when importing some QS (for example batch-processing) into JBDS:
No connection specified for project. No database-specific validation will be performed.

This problem is described at https://github.com/jboss-developer/jboss-developer-shared-resources/blob/master/guides/USE_JBDS.md under "Known Issues for JBoss EAP 6 Quickstarts" section, but there's no similar section for EAP 7.