Christian Beikov ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *updated* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiN2VkMTg1NDZl... ) / Improvement ( https://hibernate.atlassian.net/browse/HHH-17027?atlOrigin=eyJpIjoiN2VkMT... ) HHH-17027 ( https://hibernate.atlassian.net/browse/HHH-17027?atlOrigin=eyJpIjoiN2VkMT... ) Get rid of TypeHelper for merge handling ( https://hibernate.atlassian.net/browse/HHH-17027?atlOrigin=eyJpIjoiN2VkMT... ) Change By: Christian Beikov ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Our goal is to get rid of uses of {{Type}} as much as possible, so replacing {{TypeHelper}} with proper {{ModelPart}} contracts is very desirable. I also expect improvements to performance for merging because we reduce the amounts of mega-morphic call sites. We should also be able to pre-compute whether model parts are mutable/deeply-mutable and hence short circuit to avoid nested calls. ( https://hibernate.atlassian.net/browse/HHH-17027#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-17027#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#100233- sha1:8d17c5d )