Message Title

Adam Pawlak created an issue

Issue Type:	Bug
Assignee:	Unassigned
Created:	14/Aug/2023 07:49 AM
Environment:	hibernate 6.2.6
Priority:	Major
Reporter:	Adam Pawlak

After migrating from hiberante 5.1.2 to hibernate 6.2.6 as i understand it, i must used CompositeUserType (instead of userType) to map 2 columns to one object. It’s all working great BUT if this object contains generic fields then i get NPE:

                              Caused by: java.lang.NullPointerException: Cannot invoke "[I.clone()" because "original.originalPropertyOrder" is null
	at org.hibernate.mapping.Component.<init>(Component.java:121) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.mapping.Component.copy(Component.java:137) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.ClassPropertyHolder.handleGenericComponentProperty(ClassPropertyHolder.java:246) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.ClassPropertyHolder.addPropertyToPersistentClass(ClassPropertyHolder.java:264) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.ClassPropertyHolder.addProperty(ClassPropertyHolder.java:217) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.ClassPropertyHolder.addProperty(ClassPropertyHolder.java:203) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.PropertyBinder.bind(PropertyBinder.java:327) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.PropertyBinder.makePropertyAndBind(PropertyBinder.java:288) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.EmbeddableBinder.createEmbeddedProperty(EmbeddableBinder.java:245) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.EmbeddableBinder.createCompositeBinder(EmbeddableBinder.java:118) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.PropertyBinder.bindBasic(PropertyBinder.java:1022) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.PropertyBinder.bindProperty(PropertyBinder.java:867) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.PropertyBinder.buildProperty(PropertyBinder.java:765) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.PropertyBinder.processElementAnnotations(PropertyBinder.java:686) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.EntityBinder.processIdPropertiesIfNotAlready(EntityBinder.java:967) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.EntityBinder.handleIdentifier(EntityBinder.java:302) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.EntityBinder.bindEntityClass(EntityBinder.java:228) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.internal.AnnotationBinder.bindClass(AnnotationBinder.java:417) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.source.internal.annotations.AnnotationMetadataSourceProcessorImpl.processEntityHierarchies(AnnotationMetadataSourceProcessorImpl.java:255) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.process.spi.MetadataBuildingProcess$1.processEntityHierarchies(MetadataBuildingProcess.java:275) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:318) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1380) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1451) ~[hibernate-core-6.2.6.Final.jar:6.2.6.Final]
	at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:75) ~[spring-orm-6.0.11.jar:6.0.11]
	at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:376) ~[spring-orm-6.0.11.jar:6.0.11]
	at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:409) ~[spring-orm-6.0.11.jar:6.0.11]
	at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:396) ~[spring-orm-6.0.11.jar:6.0.11]
	at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:352) ~[spring-orm-6.0.11.jar:6.0.11]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1817) ~[spring-beans-6.0.11.jar:6.0.11]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1766) ~[spring-beans-6.0.11.jar:6.0.11]
                              

Sample code:
Entity:

                              import jakarta.persistence.AttributeOverride;
import jakarta.persistence.AttributeOverrides;
import jakarta.persistence.Column;
import jakarta.persistence.Embedded;
import jakarta.persistence.Entity;
import jakarta.persistence.Id;
import jakarta.persistence.Lob;
import org.hibernate.annotations.CompositeType;
import pl.org.opi.polon2.employees.shared.IntermediateEventUserTypeBoo;

@Entity
public class BooEntity {
    @Id
    private Long id;

    @Lob
    @Embedded
    @CompositeType(value = IntermediateEventUserTypeBoo.class)
    @AttributeOverrides({
            @AttributeOverride(name = "type", column = @Column(name = "TYPE", updatable = false)),
            @AttributeOverride(name = "jsonValue", column = @Column(name = "DATA", updatable = false, columnDefinition = "clob"))
    })
    protected Boo boo;

    public BooEntity(Boo boo) {
        this.boo = boo;
    }
}
                              

IntermediateEventUserTypeBoo:

                              import org.hibernate.HibernateException;
import org.hibernate.engine.spi.SessionFactoryImplementor;
import org.hibernate.metamodel.spi.ValueAccess;
import org.hibernate.usertype.CompositeUserType;
import pl.org.opi.polon2.employees.employment.Boo;

import java.io.Serializable;
import java.util.Objects;

public class IntermediateEventUserTypeBoo implements CompositeUserType<Boo> {

    public static class EmbeddableMapper {
        String type;
        String jsonValue;
    }

    @Override
    public Object getPropertyValue(Boo component, int property) throws HibernateException {
        return switch (property) {
            case 0 -> component.getType();
            case 1 -> component.getJson();
            default -> new RuntimeException();
        };
    }

    @Override
    public Boo instantiate(ValueAccess values, SessionFactoryImplementor sessionFactory) {

        String type = values.getValue(0, String.class);
        BooEnum booEnum = Enum.valueOf(BooEnum.class, type);
        String json = values.getValue(1, String.class);
        return new Boo(booEnum, json);
    }

    @Override
    public Class<?> embeddable() {
        return EmbeddableMapper.class;
    }

    @Override
    public Class<Boo> returnedClass() {
        return Boo.class;
    }

    @Override
    public boolean equals(Boo x, Boo y) {
        return Objects.equals(x, y);
    }

    @Override
    public int hashCode(Boo x) {
        return Objects.hashCode(x);
    }

    @Override
    public Boo deepCopy(Boo value) {
        return new Boo<>(value.getType(), value.getJson());
    }

    @Override
    public boolean isMutable() {
        return false;
    }

    @Override
    public Serializable disassemble(Boo value) {
        return (Serializable) value;
    }

    @Override
    public Boo assemble(Serializable cached, Object owner) {
        return (Boo) cached;
    }

    @Override
    public Boo replace(Boo detached, Boo managed, Object owner) {
        return detached;
    }

}
                              

BooEnum:

                              public enum BooEnum {
    MONDAY,
    TUESDAY,
    WEDNESDAY,
    THURSDAY,
    SATURDAY,
    SUNDAY
}
                              

Boo:

                              public class Boo<T extends Enum<T>> {
    private final T type;

    private String json;

    public Boo(T type, String revision) {
        this.type = type;
        this.json = revision;
    }

    public T getType() {
        return type;
    }

    public String getJson() {
        return json;
    }
}
                              

BooTest:

                              import jakarta.persistence.EntityManager;
import jakarta.persistence.EntityManagerFactory;
import jakarta.persistence.Persistence;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import pl.org.opi.polon2.employees.employment.Boo;
import pl.org.opi.polon2.employees.employment.BooEntity;
import pl.org.opi.polon2.employees.shared.BooEnum;

public class BooTest {
    private EntityManagerFactory entityManagerFactory;


    @Before
    public void init() {
        entityManagerFactory = Persistence.createEntityManagerFactory( "templatePU" );
    }

    @After
    public void destroy() {
        entityManagerFactory.close();
    }

    // Entities are auto-discovered, so just add them anywhere on class-path
    // Add your tests, using standard JUnit.
    @Test
    public void hhh123Test() throws Exception {
        EntityManager entityManager = entityManagerFactory.createEntityManager();
        entityManager.getTransaction().begin();
        Boo<BooEnum> booEnumBoo = new Boo<>(BooEnum.SATURDAY, "2");
        BooEntity booEntity = new BooEntity(booEnumBoo);
        entityManager.getTransaction().commit();
        entityManager.close();
    }


}
                              

In my opinion problem is that the class Boo contains generic field. When i change class Boo on:

                              public class Boo {
    private final String type;

    private String json;

    public Boo(String type, String revision) {
        this.type = type;
        this.json = revision;
    }

    public String getType() {
        return type;
    }

    public String getJson() {
        return json;
    }
}
                              

Everything is good

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