Steve Ebersole ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYTM5ZDQ4MWM0... ) / Improvement ( https://hibernate.atlassian.net/browse/HHH-15996?atlOrigin=eyJpIjoiYTM5ZD... ) HHH-15996 ( https://hibernate.atlassian.net/browse/HHH-15996?atlOrigin=eyJpIjoiYTM5ZD... ) Create an abstraction over Annotation for annotation processing ( https://hibernate.atlassian.net/browse/HHH-15996?atlOrigin=eyJpIjoiYTM5ZD... ) Change By: Steve Ebersole ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) At the moment, annotation processing uses HCANN.  HCANN provides an abstraction from the domain model, but exposes {{ Annotation}} directly. Ultimately we want to move away from HCANN to use Jandex for reading the annotation details.  Jandex uses an abstraction from {{Annotation}} in the form of {{AnnotationInstance}}.  Ultimately this move to Jandex will require lots of changes to that code. {{ org.hibernate.boot.model.source}} was developed as an abstraction over the source of mapping information - annotations, {{orm.xml}}, {{hbm.xml}} with the initial intent of unifying the processing of mapping sources. This is already how {{hbm.xml}} is processed.  This work would apply that to annotations and {{orm.xml}} processing as well. The approach has benefits in addition to the processing unification, such as - # Avoiding use of library APIs in processing.  Ultimately we want to move to Jandex over HCANN for annotation consumption - see [https://hibernate.atlassian.net/browse/HHH-9489|https://hibernate.atlassi... this abstraction will make that migration much simpler. # Allows support for both dynamic models (MAP mode) and {{entity-name}} models.  This is important for deprecation of {{hbm.xml}} in favor of annotations / {{orm.xml}} - see [https://hibernate.atlassian.net/browse/HHH-15698|https://hibernate.atlass...]. ( https://hibernate.atlassian.net/browse/HHH-15996#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-15996#add-comment?atlOrigin=ey... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100213- sha1:cca7326 )