/// <summary>
/// Restores the object's properties to their original values
/// </summary>
public void Reset()
{
if (originalValues == null)
{
throw new InvalidOperationException("You cannot reset a new object. Just create a new one?");
}
foreach (var kvp in originalValues)
{
PropertyHelper.SetValue(this, kvp.Key, kvp.Value);
}
ResetFKProperties();
foreach (var ep in DwarfHelper.GetOneToManyProperties(this))
{
var key = GetCollectionKey(ep.Name);
CacheManager.RemoveKey(key);
}
foreach (var ep in DwarfHelper.GetManyToManyProperties(this))
{
var key = GetCollectionKey(ep.Name);
CacheManager.RemoveKey(key);
}
if (oneToManyAlternateKeys != null)
{
oneToManyAlternateKeys.Clear();
}
}
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>
/// Creates and returns an AuditLogEventTrace object for every modified ManyToMany relationship
/// </summary>
private IEnumerable <AuditLogEventTrace> CreateTraceEventsForManyToMany()
{
if (!IsSaved)
{
return(new AuditLogEventTrace[0]);
}
return(from ep in DwarfHelper.GetManyToManyProperties(this)
where IsCollectionInitialized(ep.ContainedProperty)
let list = ep.GetValue(this)
let adds = ((IList)ep.PropertyType.GetMethod("GetAddedItems").Invoke(list, null)).Cast <IDwarf>().ToList()
let dels = ((IList)ep.PropertyType.GetMethod("GetDeletedItems").Invoke(list, null)).Cast <IDwarf>().ToList()
where adds.Count > 0 || dels.Count > 0
let org = MergeLists(list, adds, dels)
select new AuditLogEventTrace {
PropertyName = ep.Name, OriginalValue = org, NewValue = list
});
}
/// <summary>
/// Append the Save method with additional modifications
/// </summary>
private void OnAfterSaveInternal()
{
foreach (var ep in DwarfHelper.GetDBProperties(GetType()))
{
SetOriginalValue(ep.Name, ep.GetValue(this));
}
foreach (var ep in DwarfHelper.GetGemListProperties(GetType()))
{
if (IsCollectionInitialized(ep.ContainedProperty))
{
SetOriginalValue(ep.Name, ep.GetValue(this));
}
}
foreach (var ep in DwarfHelper.GetManyToManyProperties(GetType()))
{
if (IsCollectionInitialized(ep.ContainedProperty))
{
SetOriginalValue(ep.Name, ep.GetValue(this));
}
}
}
/// <summary>
/// Automatically handles default persistance operations over DwarfLists for ManyToManyRelationships.
/// Should a manual persistance be used via PersistManyToMany, do so before the base call in AppendStore
/// </summary>
private void PersistManyToManyCollections()
{
foreach (var pi in DwarfHelper.GetManyToManyProperties(this))
{
if (!IsCollectionInitialized(pi.ContainedProperty))
{
continue;
}
var tableName = ManyToManyAttribute.GetTableName(GetType(), pi.ContainedProperty);
var obj = (IDwarfList)pi.GetValue(this);
foreach (var deletedItem in obj.GetDeletedItems())
{
DeleteManyToMany(this, deletedItem, tableName);
}
foreach (var addedItem in obj.GetAddedItems())
{
PersistManyToMany(this, addedItem, tableName);
}
}
}
