Melissa Koppeschaar ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5e8224c... ) *created* an issue Bean Validation ( https://hibernate.atlassian.net/browse/BVAL?atlOrigin=eyJpIjoiMjk1MzMxZmF... ) / Bug ( https://hibernate.atlassian.net/browse/BVAL-753?atlOrigin=eyJpIjoiMjk1MzM... ) BVAL-753 ( https://hibernate.atlassian.net/browse/BVAL-753?atlOrigin=eyJpIjoiMjk1MzM... ) @NotEmpty not working when updating a Set using the getter (empty Set gets persisted) ( https://hibernate.atlassian.net/browse/BVAL-753?atlOrigin=eyJpIjoiMjk1MzM... ) Issue Type: Bug Assignee: Unassigned Created: 16/Jun/2020 10:11 AM Priority: Minor Reporter: Melissa Koppeschaar ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5e8224c... ) MapStruct updates a Set by using the getter if the Set is already containing objects. For some reason, the @NotEmpty annotation gets bypassed in this scenario (i.e., it is possible to persist an empty Set when using the getter even though the @NotEmpty annotation is used). This problem does not show when using the setter. Here is the link to a small project I created to demonstrate the bug: https://gitlab.com/melissa.koppeschaar/hibernate-bug-report ( https://hibernate.atlassian.net/browse/BVAL-753#add-comment?atlOrigin=eyJ... ) Add Comment ( https://hibernate.atlassian.net/browse/BVAL-753#add-comment?atlOrigin=eyJ... ) 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#100128- sha1:2f2218b )