private void OnBeforeDeleteInternal()
{
//We want to persist all the Inverse OneToManyCollection upon deletion. Let's remove all lists that doesn't
//need persistance first (all objects therein will be deleted in the database via delete cascades anyways)
foreach (var pi in DwarfHelper.GetOneToManyProperties(this))
{
var propertyAtt = OneToManyAttribute.GetAttribute(pi.ContainedProperty);
if (propertyAtt == null)
{
throw new NullReferenceException(pi.Name + " is missing the OneToMany attribute...");
}
if (!propertyAtt.IsInverse)
{
continue;
}
var obj = (IDwarfList)pi.GetValue(this);
var owningProp = oneToManyAlternateKeys.ContainsKey(pi.Name) ? oneToManyAlternateKeys[pi.Name] : GetType().Name;
obj.Cast <IDwarf>().ForEachX(x => PropertyHelper.SetValue(x, owningProp, null));
obj.SaveAllInternal <T>();
}
if (DbContextHelper <T> .DbContext.IsAuditLoggingSuspended || DwarfContext <T> .GetConfiguration().AuditLogService == null)
{
return;
}
var traces = (from ep in DwarfHelper.GetDBProperties(GetType()).Where(x => !x.Name.Equals("Id"))
let oldValue = originalValues[ep.Name]
where oldValue != null && (oldValue is string? !string.IsNullOrEmpty(oldValue.ToString()) : true)
select new AuditLogEventTrace {
PropertyName = ep.Name, OriginalValue = oldValue
}).ToArray();
var collectionTraces = (from ep in DwarfHelper.GetGemListProperties(GetType())
let oldValue = (IGemList)ep.GetValue(this)
where oldValue != null && oldValue.Count > 0
select new AuditLogEventTrace {
PropertyName = ep.Name, OriginalValue = oldValue
}).ToArray();
var many2ManyTraces = (from ep in DwarfHelper.GetManyToManyProperties(GetType())
let oldValue = ep.GetValue(this)
where oldValue != null && ((IList)oldValue).Count > 0
select new AuditLogEventTrace {
PropertyName = ep.Name, OriginalValue = oldValue
}).ToArray();
DwarfContext <T> .GetConfiguration().AuditLogService.Logg(this, AuditLogTypes.Deleted, traces.Union(collectionTraces).Union(many2ManyTraces).ToArray());
}
/// <summary>
/// Automatically handles default persistance operations over DwarfLists for OneToManyRelationships.
/// Should a manual persistance be used via PersistOneToMany, do so before the base call in AppendStore
/// </summary>
private void PersistOneToManyCollections()
{
foreach (var pi in DwarfHelper.GetOneToManyProperties(this))
{
if (!IsCollectionInitialized(pi.ContainedProperty))
{
continue;
}
var propertyName = pi.Name;
var propertyAtt = OneToManyAttribute.GetAttribute(pi.ContainedProperty);
if (propertyAtt == null)
{
throw new NullReferenceException(propertyName + " is missing the OneToMany attribute...");
}
var obj = (IDwarfList)PropertyHelper.GetValue(this, propertyName);
var list = obj.Cast <IDwarf>().ToList();
var owningProp = oneToManyAlternateKeys.ContainsKey(propertyName) ? oneToManyAlternateKeys[propertyName] : GetType().Name;
list.ForEach(x => PropertyHelper.SetValue(x, owningProp, this));
var deleteObjects = obj.GetDeletedItems();
if (propertyAtt.IsInverse)
{
deleteObjects.ForEach(x => PropertyHelper.SetValue(x, owningProp, null));
deleteObjects.SaveAllInternal <T>();
}
else
{
deleteObjects.DeleteAllInternal <T>();
}
list.SaveAllInternal <T>();
oneToManyAlternateKeys.Remove(propertyName);
}
}