private void GenerateBidirectionalCollectionChangeWorkUnits(AuditProcess auditProcess,
IDatabaseEventArgs evt,
PersistentCollectionChangeWorkUnit workUnit,
RelationDescription rd)
{
// Checking if this is enabled in configuration ...
if (!VerCfg.GlobalCfg.GenerateRevisionsForCollections)
return;
// Checking if this is not a bidirectional relation - then, a revision needs also be generated for
// the other side of the relation.
// relDesc can be null if this is a collection of simple values (not a relation).
if (rd != null && rd.Bidirectional)
{
var relatedEntityName = rd.ToEntityName;
var relatedIdMapper = VerCfg.EntCfg[relatedEntityName].IdMapper;
foreach (var changeData in workUnit.CollectionChanges)
{
var relatedObj = changeData.GetChangedElement();
var relatedId = relatedIdMapper.MapToIdFromEntity(relatedObj);
auditProcess.AddWorkUnit(new CollectionChangeWorkUnit(evt.Session,
evt.Session.BestGuessEntityName(relatedObj),
VerCfg,
relatedId,
relatedObj));
}
}
}
private void GenerateFakeBidirecationalRelationWorkUnits(AuditProcess auditProcess,
IPersistentCollection newColl,
object oldColl,
string collectionEntityName,
string referencingPropertyName,
AbstractCollectionEvent evt,
RelationDescription rd)
{
// First computing the relation changes
var collectionChanges = VerCfg.EntCfg[collectionEntityName].PropertyMapper
.MapCollectionChanges(referencingPropertyName, newColl, oldColl, evt.AffectedOwnerIdOrNull);
// Getting the id mapper for the related entity, as the work units generated will corrspond to the related
// entities.
var relatedEntityName = rd.ToEntityName;
var relatedIdMapper = VerCfg.EntCfg[relatedEntityName].IdMapper;
// For each collection change, generating the bidirectional work unit.
foreach (var changeData in collectionChanges)
{
var relatedObj = changeData.GetChangedElement();
var relatedId = relatedIdMapper.MapToIdFromEntity(relatedObj);
var revType = (RevisionType)changeData.Data[VerCfg.AuditEntCfg.RevisionTypePropName];
// This can be different from relatedEntityName, in case of inheritance (the real entity may be a subclass
// of relatedEntityName).
var realRelatedEntityName = evt.Session.BestGuessEntityName(relatedObj);
// By default, the nested work unit is a collection change work unit.
var nestedWorkUnit = new CollectionChangeWorkUnit(evt.Session, realRelatedEntityName, VerCfg,
relatedId, relatedObj);
auditProcess.AddWorkUnit(new FakeBidirectionalRelationWorkUnit(evt.Session, realRelatedEntityName, VerCfg,
relatedId, referencingPropertyName, evt.AffectedOwnerOrNull, rd, revType,
changeData.GetChangedElementIndex(), nestedWorkUnit));
}
// We also have to generate a collection change work unit for the owning entity.
auditProcess.AddWorkUnit(new CollectionChangeWorkUnit(evt.Session, collectionEntityName, VerCfg,
evt.AffectedOwnerIdOrNull, evt.AffectedOwnerOrNull));
}
private void addCollectionChangeWorkUnitToAuditProcess(ISessionImplementor session, AuditProcess auditProcess, object value)
{
// relDesc.getToEntityName() doesn't always return the entity name of the value - in case
// of subclasses, this will be root class, no the actual class. So it can't be used here.
string toEntityName;
object id;
var newValueAsProxy = value as INHibernateProxy;
if (newValueAsProxy != null)
{
toEntityName = session.BestGuessEntityName(value);
id = newValueAsProxy.HibernateLazyInitializer.Identifier;
// We've got to initialize the object from the proxy to later read its state.
value = Toolz.GetTargetFromProxy((ISession) session, newValueAsProxy);
}
else
{
toEntityName = session.GuessEntityName(value);
var idMapper = VerCfg.EntCfg[toEntityName].IdMapper;
id = idMapper.MapToIdFromEntity(value);
}
auditProcess.AddWorkUnit(new CollectionChangeWorkUnit(session, toEntityName, VerCfg, id, value));
}