Add support for discovering JPA 2.1 @Converter during scanning [SPR-10799]

[spring-projects-issues]

Sinuhé opened SPR-10799 and commented

JPA 2.1 spec permits registering of converters using @Converter annotation. This works ok, at least in EclipseLink's last version. But it doesn't work with XML-free configuration using Spring. This is due to DefaultPersistenceUnitManager class, which scans specified packages looking for classes annotated with @Entity, @Embeddable and @MappedSuperclass, but not @Converter.

Just adding new AnnotationTypeFilter(Converter.class, false) to entityTypeFilters field worked for me.

private static final TypeFilter[] entityTypeFilters = new TypeFilter[] {
    new AnnotationTypeFilter(Entity.class, false),
    new AnnotationTypeFilter(Embeddable.class, false),
    new AnnotationTypeFilter(MappedSuperclass.class, false),
    new AnnotationTypeFilter(Converter.class, false)};

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Affects: 3.2.3

Reference URL: http://eclipse.1072660.n5.nabble.com/Converter-not-being-picked-up-despite-having-autoApply-true-td161166.html

Issue Links:

• LocalSessionFactoryBean doesn't support JPA 2.1 auto-apply @Converter on Hibernate 4.3 [SPR-12234] #16849 LocalSessionFactoryBean doesn't support JPA 2.1 auto-apply @Converter on Hibernate 4.3