/**
* @param value Value, which should be mapped to the middle-table, either as a relation to another
* entity, or as a simple value.
* @param xmlMapping If not <code>null</code>, xml mapping for this value is added to this
* element.
* @param queryGeneratorBuilder In case <code>value</code> is a relation to another entity,
* information about it should be added to the given.
* @param prefix Prefix for proeprty names of related entities identifiers.
* @param joinColumns Names of columns to use in the xml mapping, if this array isn't null and has
* any elements.
* @return Data for mapping this component.
*/
@SuppressWarnings({"unchecked"})
private MiddleComponentData addValueToMiddleTable(
Value value,
Element xmlMapping,
QueryGeneratorBuilder queryGeneratorBuilder,
String prefix,
JoinColumn[] joinColumns) {
Type type = value.getType();
if (type instanceof ManyToOneType) {
String prefixRelated = prefix + "_";
String referencedEntityName = MappingTools.getReferencedEntityName(value);
IdMappingData referencedIdMapping =
mainGenerator.getReferencedIdMappingData(
referencingEntityName, referencedEntityName, propertyAuditingData, true);
// Adding related-entity (in this case: the referenced entities id) id mapping to the xml only
// if the
// relation isn't inverse (so when <code>xmlMapping</code> is not null).
if (xmlMapping != null) {
addRelatedToXmlMapping(
xmlMapping,
prefixRelated,
joinColumns != null && joinColumns.length > 0
? MetadataTools.getColumnNameIterator(joinColumns)
: MetadataTools.getColumnNameIterator(value.getColumnIterator()),
referencedIdMapping);
}
// Storing the id data of the referenced entity: original mapper, prefixed mapper and entity
// name.
MiddleIdData referencedIdData =
createMiddleIdData(referencedIdMapping, prefixRelated, referencedEntityName);
// And adding it to the generator builder.
queryGeneratorBuilder.addRelation(referencedIdData);
return new MiddleComponentData(
new MiddleRelatedComponentMapper(referencedIdData),
queryGeneratorBuilder.getCurrentIndex());
} else {
// Last but one parameter: collection components are always insertable
boolean mapped =
mainGenerator
.getBasicMetadataGenerator()
.addBasic(
xmlMapping,
new PropertyAuditingData(
prefix,
"field",
ModificationStore.FULL,
RelationTargetAuditMode.AUDITED,
null,
null,
false),
value,
null,
true,
true);
if (mapped) {
// Simple values are always stored in the first item of the array returned by the query
// generator.
return new MiddleComponentData(
new MiddleSimpleComponentMapper(mainGenerator.getVerEntCfg(), prefix), 0);
} else {
mainGenerator.throwUnsupportedTypeException(type, referencingEntityName, propertyName);
// Impossible to get here.
throw new AssertionError();
}
}
}
/**
* Here is most of the nuts and bolts of this factory, where we interpret the known JPA metadata
* against the known Hibernate metadata and build a descriptor for the attribute.
*
* @param attributeContext The attribute to be described
* @param memberResolver Strategy for how to resolve the member defining the attribute.
* @param <X> The owner type
* @param <Y> The attribute type
* @return The attribute description
*/
@SuppressWarnings({"unchecked"})
private <X, Y> AttributeMetadata<X, Y> determineAttributeMetadata(
AttributeContext<X> attributeContext, MemberResolver memberResolver) {
LOG.trace(
"Starting attribute metadata determination ["
+ attributeContext.getPropertyMapping().getName()
+ "]");
final Member member = memberResolver.resolveMember(attributeContext);
LOG.trace(" Determined member [" + member + "]");
final Value value = attributeContext.getPropertyMapping().getValue();
final org.hibernate.type.Type type = value.getType();
LOG.trace(
" Determined type [name="
+ type.getName()
+ ", class="
+ type.getClass().getName()
+ "]");
if (type.isAnyType()) {
// ANY mappings are currently not supported in the JPA metamodel; see HHH-6589
if (context.isIgnoreUnsupported()) {
return null;
} else {
throw new UnsupportedOperationException("ANY not supported");
}
} else if (type.isAssociationType()) {
// collection or entity
if (type.isEntityType()) {
// entity
return new SingularAttributeMetadataImpl<X, Y>(
attributeContext.getPropertyMapping(),
attributeContext.getOwnerType(),
member,
determineSingularAssociationAttributeType(member));
}
// collection
if (value instanceof Collection) {
final Collection collValue = (Collection) value;
final Value elementValue = collValue.getElement();
final org.hibernate.type.Type elementType = elementValue.getType();
// First, determine the type of the elements and use that to help determine the
// collection type)
final Attribute.PersistentAttributeType elementPersistentAttributeType;
final Attribute.PersistentAttributeType persistentAttributeType;
if (elementType.isAnyType()) {
throw new UnsupportedOperationException("collection of any not supported yet");
}
final boolean isManyToMany = isManyToMany(member);
if (elementValue instanceof Component) {
elementPersistentAttributeType = Attribute.PersistentAttributeType.EMBEDDED;
persistentAttributeType = Attribute.PersistentAttributeType.ELEMENT_COLLECTION;
} else if (elementType.isAssociationType()) {
elementPersistentAttributeType =
isManyToMany
? Attribute.PersistentAttributeType.MANY_TO_MANY
: Attribute.PersistentAttributeType.ONE_TO_MANY;
persistentAttributeType = elementPersistentAttributeType;
} else {
elementPersistentAttributeType = Attribute.PersistentAttributeType.BASIC;
persistentAttributeType = Attribute.PersistentAttributeType.ELEMENT_COLLECTION;
}
final Attribute.PersistentAttributeType keyPersistentAttributeType;
// Finally, we determine the type of the map key (if needed)
if (value instanceof Map) {
final Value keyValue = ((Map) value).getIndex();
final org.hibernate.type.Type keyType = keyValue.getType();
if (keyType.isAnyType())
throw new UnsupportedOperationException("collection of any not supported yet");
if (keyValue instanceof Component)
keyPersistentAttributeType = Attribute.PersistentAttributeType.EMBEDDED;
else if (keyType.isAssociationType())
keyPersistentAttributeType = Attribute.PersistentAttributeType.MANY_TO_ONE;
else keyPersistentAttributeType = Attribute.PersistentAttributeType.BASIC;
} else keyPersistentAttributeType = null;
return new PluralAttributeMetadataImpl(
attributeContext.getPropertyMapping(),
attributeContext.getOwnerType(),
member,
persistentAttributeType,
elementPersistentAttributeType,
keyPersistentAttributeType);
} else if (value instanceof OneToMany) {
// TODO : is this even possible??? Really OneToMany should be describing the
// element value within a o.h.mapping.Collection (see logic branch above)
throw new IllegalArgumentException("HUH???");
// final boolean isManyToMany = isManyToMany( member );
// //one to many with FK => entity
// return new PluralAttributeMetadataImpl(
// attributeContext.getPropertyMapping(),
// attributeContext.getOwnerType(),
// member,
// isManyToMany
// ? Attribute.PersistentAttributeType.MANY_TO_MANY
// : Attribute.PersistentAttributeType.ONE_TO_MANY
// value,
// AttributeContext.TypeStatus.ENTITY,
// Attribute.PersistentAttributeType.ONE_TO_MANY,
// null, null, null
// );
}
} else if (attributeContext.getPropertyMapping().isComposite()) {
// component
return new SingularAttributeMetadataImpl<X, Y>(
attributeContext.getPropertyMapping(),
attributeContext.getOwnerType(),
member,
Attribute.PersistentAttributeType.EMBEDDED);
} else {
// basic type
return new SingularAttributeMetadataImpl<X, Y>(
attributeContext.getPropertyMapping(),
attributeContext.getOwnerType(),
member,
Attribute.PersistentAttributeType.BASIC);
}
throw new UnsupportedOperationException(
"oops, we are missing something: " + attributeContext.getPropertyMapping());
}