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<td class="text-paragraph-pattern-container mobile-resize-text " style="padding: 0; border-collapse: collapse; padding: 0 0 10px"> <p style="margin: 10px 0 0; margin-top: 0">There are two methods that play an important role in determining the described behaviors.</p>
<ul>
<li>org.hibernate.jpamodelgen.util.TypeUtils.determineAccessTypeForHierarchy(TypeElement, Context)</li>
<li>org.hibernate.jpamodelgen.annotation.AnnotationMetaEntity.addPersistentMembers(List<? extends Element>, AccessType)</li>
</ul>
<ol>
<li>domain 1<br> First, we look at org.hibernate.jpamodelgen.util.TypeUtils.determineAccessTypeForHierarchy(TypeElement, Context) to determine the access type for the entity domain1.Book.<br> There is no explicit access type on domain1.Book. Since the entity is the root of the class hierarchy and defines an id. Its default access type is set to FIELD.<br> Now, we look at org.hibernate.jpamodelgen.annotation.AnnotationMetaEntity.addPersistentMembers(List<? extends Element>, AccessType) for both the Author field and getAuthor() method in domain1.Book.
<ul>
<li>Author field<br> -> the entity access type is the same as the member's kind (FIELD)<br> -> the annotations on the field are processed<br> -> the ManyToOne annotation is present<br> -> the Author attirubte is a basic attribute (org.hibernate.jpamodelgen.annotation.MetaAttributeGenerationVisitor.isBasicAttribute(Element, Element))<br> -> the Author attribute is returned and added to domain1.Book</li>
<li>getAuthor() method<br> -> the entity access type (FIELD) is not the same as the member's kind (PROPERTY) and there's no forced access type on the member<br> -> the getAuthor() method is not processed</li>
</ul> </li>
<li>domain 2<br> First, we look at org.hibernate.jpamodelgen.util.TypeUtils.determineAccessTypeForHierarchy(TypeElement, Context) to determine the access type for the entity domain2.Book.<br> There is no explicit access type on domain2.Book. Since the entity neither has a superclass nor defines an id, its default access type is set to PROPERTY.<br> Now, we look at org.hibernate.jpamodelgen.annotation.AnnotationMetaEntity.addPersistentMembers(List<? extends Element>, AccessType) for both the Author field and getAuthor() method in domain2.Book.
<ul>
<li>Author field<br> -> the entity access type (PROPERTY) is not the same as the member's kind (FIELD) and there's no forced access type on the member<br> -> the Author field is not processed</li>
<li>getAuthor() method<br> -> the entity access type (PROPERTY) is the same as the member's kind (PROPERTY)<br> -> the annotations on the method is processed<br> -> there is no annotation on this method<br> -> the getAuthor() method is not a basic attribute<br> -> null is returned thus not added to domain2.Book</li>
</ul> </li>
<li>domain 3<br> First, we look at org.hibernate.jpamodelgen.util.TypeUtils.determineAccessTypeForHierarchy(TypeElement, Context) to determine the access type for the entity domain3.Book.<br> There is no explicit access type on domain3.Book. Since the entity neither has a superclass nor defines an id, its default access type is set to PROPERTY.<br> Now, we look at org.hibernate.jpamodelgen.annotation.AnnotationMetaEntity.addPersistentMembers(List<? extends Element>, AccessType) for both the Author field and getAuthor() method in domain3.Book.
<ul>
<li>Author field<br> -> the entity access type (PROPERTY) is not the same as the member's kind (FIELD) and there's no forced access type on the member<br> -> the Author field is not processed</li>
<li>getAuthor() method<br> -> the entity access type (PROPERTY) is the same as the member's kind (PROPERTY)<br> -> the annotations on the method is processed<br> -> there is no annotation on this method<br> -> however, domain3.Author implements java.io.Serializable which makes the return value of getAuthor() method a basic attribute (org.hibernate.jpamodelgen.annotation.BasicAttributeVisitor.visitDeclared(DeclaredType, Element))<br> -> the Author attribute is returned and added to domain2.Book</li>
</ul> </li>
<li>domain 4<br> Since the Author field in domain4.Book is annotated with an access type, the Author field has a forced access type. As long as the field has a forced access type, the field is processed.<br> Now, we look at org.hibernate.jpamodelgen.annotation.AnnotationMetaEntity.addPersistentMembers(List<? extends Element>, AccessType) for both the Author field and getAuthor() method in domain1.Book.
<ul>
<li>Author field<br> -> the field has a forced access type<br> -> the annotations on the field are processed<br> -> the ManyToOne annotation is present<br> -> the Author attribute is a basic attribute (org.hibernate.jpamodelgen.annotation.MetaAttributeGenerationVisitor.isBasicAttribute(Element, Element))<br> -> the Author attribute is returned and added to domain4.Book</li>
<li>getAuthor() method<br> -> the entity access type (PROPERTY) is the same as the member's kind (PROPERTY)<br> -> the annotations on the method is processed<br> -> there is no annotation on this method<br> -> the getAuthor() method is not a basic attribute<br> -> null is returned thus not added to domain4.Book</li>
</ul> </li>
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