/**
* Returns the effective association metadata for the attribute checking with the parent mappings
* and entities.
*
* @return the column metadata
* @since 2.0.0
*/
@SuppressWarnings("unchecked")
protected AssociationMetadata getAssociationMetadata() {
AssociationMetadata metadata = null;
final String path = this.getParent().getRootPath(this.getName());
final AttributeImpl<?, ?> rootAttribute =
this.getParent().getRootAttribute(this.getAttribute());
/**
* The priorities are like below:
*
* <p>1. If the root attribute is defined in the root type (thus the entity) then locate the
* association override on the attribute chain<br>
* 2. If the root attribute is defined in a parent mapped super class then locate the
* association on the entity<br>
* 3. If the parent is an embeddable mapping then locate the attribute override again on the
* association chain<br>
* 4. return the association metadata from the attribute<br>
*/
// Clause 1
if ((rootAttribute.getDeclaringType() == this.getRoot().getType())
&& (this.getParent() instanceof EmbeddedMappingImpl)) {
metadata = ((EmbeddedMappingImpl<?, ?>) this.getParent()).getAssociationOverride(path);
if (metadata != null) {
return metadata;
}
}
// Clause 2
if (rootAttribute.getDeclaringType() instanceof MappedSuperclassTypeImpl) {
metadata = ((EntityTypeImpl<Y>) this.getRoot().getType()).getAssociationOverride(path);
if (metadata != null) {
return metadata;
}
}
// Clause 3
if (this.getParent() instanceof EmbeddedMappingImpl) {
metadata = ((EmbeddedMappingImpl<?, ?>) this.getParent()).getAssociationOverride(path);
if (metadata != null) {
return metadata;
}
}
// Clause 4: fall back to attribute's column metadata
return (AssociationMetadata) this.getAttribute().getMetadata();
}
/**
* @param parent the parent mapping
* @param metadata the metadata
* @param attribute the attribute
* @since 2.0.0
*/
public AssociationMappingImpl(
AbstractParentMapping<?, Z> parent,
AssociationAttributeMetadata metadata,
AttributeImpl<? super Z, X> attribute) {
super(parent, attribute, attribute.getJavaType(), attribute.getName());
if ((metadata instanceof MappableAssociationAttributeMetadata)
&& StringUtils.isNotBlank(
((MappableAssociationAttributeMetadata) metadata).getMappedBy())) {
this.mappedBy = ((MappableAssociationAttributeMetadata) metadata).getMappedBy();
} else {
this.mappedBy = null;
}
this.eager =
attribute.isCollection() || (this.mappedBy == null)
? metadata.getFetchType() == FetchType.EAGER
: true;
this.maxFetchDepth = metadata.getMaxFetchDepth();
this.fetchStrategy = metadata.getFetchStrategy();
if (metadata instanceof OrphanableAssociationAttributeMetadata) {
this.removesOrphans = ((OrphanableAssociationAttributeMetadata) metadata).removesOrphans();
} else {
this.removesOrphans = false;
}
this.cascadesDetach =
metadata.getCascades().contains(CascadeType.ALL)
|| metadata.getCascades().contains(CascadeType.DETACH);
this.cascadesMerge =
metadata.getCascades().contains(CascadeType.ALL)
|| metadata.getCascades().contains(CascadeType.MERGE);
this.cascadesPersist =
metadata.getCascades().contains(CascadeType.ALL)
|| metadata.getCascades().contains(CascadeType.PERSIST);
this.cascadesRefresh =
metadata.getCascades().contains(CascadeType.ALL)
|| metadata.getCascades().contains(CascadeType.REFRESH);
this.cascadesRemove =
metadata.getCascades().contains(CascadeType.ALL)
|| metadata.getCascades().contains(CascadeType.REMOVE);
}