We're upgrading from Hibernate 4.3.11 to Hibernate 5.2.7 and are getting a NullPointerException in ModelBinder when it tries to access a PrimaryKey. It's null.
We have a mix of HBM and Annotation entities. It happens when an entity is mapped via XML and references an entity that is mapped via annotations - many to one. We're using the legacy bootstrapping process via spring's LocalSessionFactoryBuilder (version 5).
I'd appreciate any suggestions what could be wrong, how to debug further, or things to try.
Here's the exception:
Code:
Caused by: java.lang.NullPointerException
at org.hibernate.boot.model.source.internal.hbm.ModelBinder$ManyToOneColumnBinder.doSecondPass(ModelBinder.java:4140) ~[hibernate-core-5.2.7.Final.jar:5.2.7.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1621) ~[hibernate-core-5.2.7.Final.jar:5.2.7.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1576) ~[hibernate-core-5.2.7.Final.jar:5.2.7.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:278) ~[hibernate-core-5.2.7.Final.jar:5.2.7.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:83) ~[hibernate-core-5.2.7.Final.jar:5.2.7.Final]
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:418) ~[hibernate-core-5.2.7.Final.jar:5.2.7.Final]
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:87) ~[hibernate-core-5.2.7.Final.jar:5.2.7.Final]
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:691) ~[hibernate-core-5.2.7.Final.jar:5.2.7.Final]
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:726) ~[hibernate-core-5.2.7.Final.jar:5.2.7.Final]
at com.i2rd.hibernate.util.RebuildableSessionFactoryBean.createSessionFactory(RebuildableSessionFactoryBean.java:242) ~[net.proteusframework-core.jar:?]
at com.i2rd.hibernate.util.RebuildableSessionFactoryBean.rebuildSessionFactory(RebuildableSessionFactoryBean.java:204) ~[net.proteusframework-core.jar:?]
at com.i2rd.hibernate.util.RebuildableSessionFactoryBean.getObject(RebuildableSessionFactoryBean.java:182) ~[net.proteusframework-core.jar:?]
at com.i2rd.hibernate.util.RebuildableSessionFactoryBean.getObject(RebuildableSessionFactoryBean.java:54) ~[net.proteusframework-core.jar:?]
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:168) ~[spring-beans-4.3.6.RELEASE.jar:4.3.6.RELEASE]
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