HHH-19056 Prevent NPE when using @MapsId on an embeddable #11025
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mbellade
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Sep 29, 2025
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| Object context = generationContextLocator.locateGenerationContext( session, object ); | ||
| if ( context == null ) { | ||
| context = getDefaultSupplier( compositeType.getReturnedClass() ).get(); | ||
| } |
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Using getDefaultSupplier here is not correct, we should rather retrieve the embedded identifier's EmbeddableRepresentationStrategy. You should be able to retrieve it from the entity persister, by looking at its identifier attribute - we should also check we're in this "special" mapsid with null embedded id case.
I would also keep this logic under generationContextLocator.locateGenerationContext, but that's just a detail.
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https://hibernate.atlassian.net/browse/HHH-19056
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