HHH-19020 - provide more info in case a declared MappedSuperclass is not found #10739
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…not found Signed-off-by: Jan Schatteman <[email protected]>
| @@ -274,6 +275,9 @@ public static void addPropertyToMappedSuperclass( | |||
| ClassDetails declaringClass, | |||
| MetadataBuildingContext context) { | |||
| final MappedSuperclass superclass = context.getMetadataCollector().getMappedSuperclass( declaringClass.toJavaClass() ); | |||
| if ( superclass == null ) { | |||
| throw new HibernateException( "Mapped superclass is null for declaring type " + declaringClass ); | |||
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This message is slightly better than an NPE, but it doesn't really tell the user what they did wrong, nor what they should do to fix it.
Also, shouldn't it be a MappingException?
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I think we might want to understand why the superclass is null, too, since looking at the code-path that leads here (from the Jira's stack trace) it looks like we're processing an embeddable that extends from a @MappedSuperclass. I fear that we might be processing the embeddable before its parent, I remember fixing something similar for https://hibernate.atlassian.net/browse/HHH-18103.
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I think we might want to understand why the
superclassis null, too, since looking at the code-path that leads here (from the Jira's stack trace) it looks like we're processing an embeddable that extends from a@MappedSuperclass. I fear that we might be processing the embeddable before its parent, I remember fixing something similar for https://hibernate.atlassian.net/browse/HHH-18103.
One of the issue's comments states "the superclass of the embedded id was not part of the mapped resources that Spring registers with Hibernate", so it seems like this was an error in Spring, and this was just an attempt to cater for the user's - I think correct - request for more useful (than an NPE) info on what happened.
@gavinking This is also why I chose to throw a more generic HibernateException, since we may not be sure what the cause of the missing MappedSuperclass is?
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I agree with @mbellade that we should dig a bit deeper into this, via the test case given here: https://github.com/lukaseckert/hibernate-test-case-HHH-19020/tree/main/orm.
One of the issue's comments states "the superclass of the embedded id was not part of the mapped resources that Spring registers with Hibernate"
I think you know what I think of the idea of taking at face value any claim made by a user in an issue report. :)
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https://hibernate.atlassian.net/browse/HHH-19020