zheng hank ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5a38e9c... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiNWY4MjM1YjM5... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-14059?atlOrigin=eyJpIjoiNWY4Mj... ) HHH-14059 ( https://hibernate.atlassian.net/browse/HHH-14059?atlOrigin=eyJpIjoiNWY4Mj... ) Cannot use full qualified enum name which has two uppercase alphabet prefix ( https://hibernate.atlassian.net/browse/HHH-14059?atlOrigin=eyJpIjoiNWY4Mj... ) Issue Type: Bug Affects Versions: 5.4.17 Assignee: Unassigned Components: hibernate-core Created: 03/Jun/2020 23:06 PM Labels: core hibernate Priority: Major Reporter: zheng hank ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5a38e9c... ) Hi, I found that this sql will throw error: Invalid path: 'io.github.zhengyhn.practice.hibernate.ABStatus.A'. select s from Sample s where s.upperStatus = io.github.zhengyhn.practice.hibernate.ABStatus.A But the below sql works. select s from Sample s where s.lowerStatus = io.github.zhengyhn.practice.hibernate.BaStatus.A I read the code and found this is because of these lines of code in org.hibernate.internal.util.ReflectHelper. if ( conventionalJavaConstants && !JAVA_CONSTANT_PATTERN.matcher( name ).find() ) { return null ; } And the JAVA_CONSTANT_PATTERN is as below. private static final Pattern JAVA_CONSTANT_PATTERN = Pattern.compile( "[a-z\\d]+\\.([A-Z]{1}[a-z\\d]+)+\\$?([A-Z]{1}[a-z\\d]+)*\\.[A-Z_\\$]+" , Pattern.UNICODE_CHARACTER_CLASS); This pattern indicate that the constant name must begin with an upper case alphabet. So "ABStatus" cannot be recognized as valid constant name. However, in my real-world project, we use GSStatus as the enum class name. I have to change it to GsStatus currently. I suggest changing this pattern to " [a-z\\d] \\.( [A-Z] [a-z\\d] ) $?( [A-Z] {1} [a-z\\d] )* . [A-Z_\\$] ". I have written a simple project for finding this issue. You can refer it as reference. https://github.com/zhengyhn/java-practice/tree/master/hibernate-enum ( https://hibernate.atlassian.net/browse/HHH-14059#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-14059#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#100128- sha1:e736ab1 )