use of org.hibernate.envers.internal.entities.mapper.SinglePropertyMapper in project hibernate-orm by hibernate.
the class CollectionMetadataGenerator method addOneToManyAttached.
@SuppressWarnings({ "unchecked" })
private void addOneToManyAttached(boolean fakeOneToManyBidirectional) {
LOG.debugf("Adding audit mapping for property %s.%s: one-to-many collection, using a join column on the referenced entity", referencingEntityName, propertyName);
// check whether the property has an @IndexColumn or @OrderColumn because its part of an
// IndexedCollection mapping type.
final boolean indexed = (propertyValue instanceof IndexedCollection) && ((IndexedCollection) propertyValue).getIndex() != null;
final String mappedBy = getMappedBy(propertyValue);
final IdMappingData referencedIdMapping = mainGenerator.getReferencedIdMappingData(referencingEntityName, referencedEntityName, propertyAuditingData, false);
final IdMappingData referencingIdMapping = referencingEntityConfiguration.getIdMappingData();
// Generating the id mappers data for the referencing side of the relation.
final MiddleIdData referencingIdData = createMiddleIdData(referencingIdMapping, mappedBy + "_", referencingEntityName);
// And for the referenced side. The prefixed mapper won't be used (as this collection isn't persisted
// in a join table, so the prefix value is arbitrary).
final MiddleIdData referencedIdData = createMiddleIdData(referencedIdMapping, null, referencedEntityName);
// Generating the element mapping.
final MiddleComponentData elementComponentData = new MiddleComponentData(new MiddleRelatedComponentMapper(referencedIdData), 0);
// Generating the index mapping, if an index exists. It can only exists in case a javax.persistence.MapKey
// annotation is present on the entity. So the middleEntityXml will be not be used. The queryGeneratorBuilder
// will only be checked for nullnes.
MiddleComponentData indexComponentData = addIndex(null, null);
// Generating the query generator - it should read directly from the related entity.
final RelationQueryGenerator queryGenerator = new OneAuditEntityQueryGenerator(mainGenerator.getGlobalCfg(), mainGenerator.getVerEntCfg(), mainGenerator.getAuditStrategy(), referencingIdData, referencedEntityName, referencedIdData, isEmbeddableElementType(), mappedBy, isMappedByKey(propertyValue, mappedBy));
// Creating common mapper data.
final CommonCollectionMapperData commonCollectionMapperData = new CommonCollectionMapperData(mainGenerator.getVerEntCfg(), referencedEntityName, propertyAuditingData.getPropertyData(), referencingIdData, queryGenerator);
PropertyMapper fakeBidirectionalRelationMapper;
PropertyMapper fakeBidirectionalRelationIndexMapper;
if (fakeOneToManyBidirectional || indexed) {
// In case of a fake many-to-one bidirectional relation, we have to generate a mapper which maps
// the mapped-by property name to the id of the related entity (which is the owner of the collection).
final String auditMappedBy;
if (fakeOneToManyBidirectional) {
auditMappedBy = propertyAuditingData.getAuditMappedBy();
} else {
auditMappedBy = propertyValue.getMappedByProperty();
}
// Creating a prefixed relation mapper.
final IdMapper relMapper = referencingIdMapping.getIdMapper().prefixMappedProperties(MappingTools.createToOneRelationPrefix(auditMappedBy));
fakeBidirectionalRelationMapper = new ToOneIdMapper(relMapper, // when constructing the PropertyData.
new PropertyData(auditMappedBy, null, null, null), referencingEntityName, false);
final String positionMappedBy;
if (fakeOneToManyBidirectional) {
positionMappedBy = propertyAuditingData.getPositionMappedBy();
} else if (indexed) {
final Value indexValue = ((IndexedCollection) propertyValue).getIndex();
positionMappedBy = indexValue.getColumnIterator().next().getText();
} else {
positionMappedBy = null;
}
// Checking if there's an index defined. If so, adding a mapper for it.
if (positionMappedBy != null) {
final Type indexType = ((IndexedCollection) propertyValue).getIndex().getType();
fakeBidirectionalRelationIndexMapper = new SinglePropertyMapper(PropertyData.forProperty(positionMappedBy, indexType));
// Also, overwriting the index component data to properly read the index.
indexComponentData = new MiddleComponentData(new MiddleStraightComponentMapper(positionMappedBy), 0);
} else {
fakeBidirectionalRelationIndexMapper = null;
}
} else {
fakeBidirectionalRelationMapper = null;
fakeBidirectionalRelationIndexMapper = null;
}
// Checking the type of the collection and adding an appropriate mapper.
addMapper(commonCollectionMapperData, elementComponentData, indexComponentData);
// Storing information about this relation.
referencingEntityConfiguration.addToManyNotOwningRelation(propertyName, mappedBy, referencedEntityName, referencingIdData.getPrefixedMapper(), fakeBidirectionalRelationMapper, fakeBidirectionalRelationIndexMapper, indexed);
}
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