protected override void RelCreationChange(EntityChangeRelCreation item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity);
if (temp.Any(p => p is EntityChangeRelCreation == false))
{
throw new InvalidOperationException("Unable to schedule a relationship creation for an entity already tracked.");
}
if (temp.Any() && temp.Any(p => !p.Equals(item)))
{
throw new InvalidOperationException("Unable to schedule a relationship creation. Already tracked for another source-destination pair.");
}
if (ChangeLog.Any(p => p is EntityChangeNodeDeletion && p.Entity == item.Source) ||
item.Source.EntityId == null && !ChangeLog.Any(p => p is EntityChangeNodeCreation && p.Entity == item.Source))
{
throw new ArgumentException("Invalid source node");
}
if (ChangeLog.Any(p => p is EntityChangeNodeDeletion && p.Entity == item.Destination) ||
item.Destination.EntityId == null && !ChangeLog.Any(p => p is EntityChangeNodeCreation && p.Entity == item.Destination))
{
throw new ArgumentException("Invalid destination node");
}
if (!temp.Any())
{
ChangeLog.Add(item);
}
}
private void CreateChangeLog()
{
var objectContext = ((IObjectContextAdapter)this).ObjectContext;
var changeSet = objectContext.ObjectStateManager.GetObjectStateEntries(EntityState.Modified | EntityState.Added | EntityState.Deleted);
foreach (ObjectStateEntry objectStateEntry in changeSet)
{
BaseDao baseDao = objectStateEntry.Entity as BaseDao;
if (baseDao == null || baseDao.ChangeLog == null)
{
continue;
}
foreach (UnitOfWorkItem unitOfWorkItem in baseDao.ChangeLog)
{
string typeName = baseDao.GetType().FullName;
var domainObject = DomainObjects.First(d => d.EntityType == typeName);
ChangeLog.Add(new ChangeLogDao
{
Id = Guid.NewGuid(),
DomainObject = domainObject,
ObjectId = baseDao.Id,
OldValue = unitOfWorkItem.OldVaue == null ? null : unitOfWorkItem.OldVaue.ToString(),
NewValue = unitOfWorkItem.NewValue == null ? null : unitOfWorkItem.NewValue.ToString(),
Property = unitOfWorkItem.PropertyName,
ChangedAt = unitOfWorkItem.TimeStamp,
ChangedBy = CurrentUserId,
CreatedAt = unitOfWorkItem.TimeStamp,
CreatedBy = CurrentUserId
});
}
}
}
protected override void NodeUpdateChange(EntityChangeNodeUpdate item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity).ToList();
if (!temp.Any() && item.Entity.EntityId == null)
{
throw new InvalidOperationException("Unable to locate entity. It must be tracked or have an EntityId.");
}
if (temp.Any(p => p is EntityChangeNodeDeletion))
{
throw new InvalidOperationException("Unable to update an entity scheduled for deletion");
}
if (temp.Any(p => p is EntityChangeNodeCreation))
{
return;
}
if (temp.Any(p => p.Inverse != null && p.Inverse.Equals(item)))
{
ChangeLog.Remove(item);
}
else
{
if (temp.Any(p => (p as EntityChangeNodeUpdate)?.Property == item.Property))
{
ChangeLog.RemoveAll(p => temp.Contains(p) && (p as EntityChangeNodeUpdate)?.Property == item.Property);
}
ChangeLog.Add(item);
}
}
protected override void NodeCreationChange(EntityChangeNodeCreation item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity);
if (temp.Any(p => p is EntityChangeNodeCreation == false))
{
throw new InvalidOperationException("Unable to schedule a node creation for an entity already tracked.");
}
if (!temp.Any())
{
ChangeLog.Add(item);
}
}
protected override void ConnectionMergeChange(EntityChangeConnectionMerge item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity && p is EntityChangeConnectionMerge).ToList();
ChangeLog.RemoveAll(p =>
temp.Contains(p) &&
((p as EntityChangeConnectionMerge).Source != item.Source || (p as EntityChangeConnectionMerge).Destination != item.Destination));
EntityChangeConnectionMerge existing = temp.FirstOrDefault(p => (p as EntityChangeConnectionMerge).Source == item.Source && (p as EntityChangeConnectionMerge).Destination == item.Destination) as EntityChangeConnectionMerge;
if (existing == null)
{
ChangeLog.Add(item);
}
else
{
existing.Order = item.Order;
}
}
protected override void RelDeletionChange(EntityChangeRelDeletion item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity).ToList();
if (!temp.Any() && item.Entity.EntityId == null)
{
return;
}
if (temp.Any(p => p is EntityChangeRelCreation || p is EntityChangeConnectionMerge))
{
ChangeLog.RemoveAll(p => temp.Contains(p));
}
else
{
ChangeLog.RemoveAll(p => temp.Contains(p));
ChangeLog.Add(item);
}
}
public T this[int index]
{
get
{
if (index < 0 || index >= _base.Length)
{
throw new IndexOutOfRangeException();
}
foreach (var item in _changeLog.GetChanges())
{
if (item.TryGetValue(index, out T value))
{
return(value);
}
}
return(_base[index]);
}
set
{
_changeLog.Add(index, value);
}
}
protected override void NodeDeletionChange(EntityChangeNodeDeletion item)
{
IEnumerable <EntityChangeDescriptor> temp = ChangeLog.Where(p => p.Entity == item.Entity).ToList();
if (!temp.Any() && item.Entity.EntityId == null)
{
throw new InvalidOperationException("Unable to locate entity. It must be tracked or have an EntityId.");
}
if (temp.Any(p => p is EntityChangeNodeCreation))
{
ChangeLog.RemoveAll(p => temp.Contains(p));
}
else
{
ChangeLog.RemoveAll(p => temp.Contains(p));
ChangeLog.Add(item);
}
foreach (EntityChangeRelCreation rel in ChangeLog.Where(p => p is EntityChangeRelCreation && (((EntityChangeRelCreation)p).Source == item.Entity || ((EntityChangeRelCreation)p).Destination == item.Entity)).ToList())
{
RelDeletionChange(new EntityChangeRelDeletion(rel.Entity as IOgmConnection));
}
}
public int CustomSaveChange()
{
var changes = from e in this.ChangeTracker.Entries()
where e.State != EntityState.Unchanged
select e;
if (changes.Any())
{
var id = HttpContext.Current.User.Identity.GetUserId <int>();
foreach (var change in changes)
{
var entityName = change.Entity.GetType().Name;
if (change.State == EntityState.Added)
{
base.SaveChanges();
EntitySetBase setBase = ((IObjectContextAdapter)this).ObjectContext.ObjectStateManager
.GetObjectStateEntry(change.Entity).EntitySet;
string[] keyNames = setBase.ElementType.KeyMembers.Select(k => k.Name).ToArray();
string keyName;
if (keyNames != null)
{
keyName = keyNames.FirstOrDefault();
}
else
{
keyName = "(NotFound)";
}
var item = change.Entity;
var currentValues = this.Entry(item).CurrentValues;
foreach (string propertyName in currentValues.PropertyNames)
{
var current = currentValues[propertyName];
if (current != null)
{
ChangeLog log = new ChangeLog()
{
EntityName = entityName,
PrimaryKeyValue = keyName != "(NotFound)" && this.Entry(item).CurrentValues[keyName] != null?this.Entry(item).CurrentValues[keyName].ToString() : null,
PropertyName = propertyName,
NewValue = current != null?current.ToString() : null,
DateChanged = DateTime.Now,
ChangeType = (int)DbChangeType.Add,
CreatedBy = id,
CreationDate = DateTime.Now
};
ChangeLog.Add(log);
}
}
}
else if (change.State == EntityState.Modified)
{
var primaryKey = GetPrimaryKeyValue(change);
var item = change.Entity;
var originalValues = this.Entry(item).OriginalValues;
var currentValues = this.Entry(item).CurrentValues;
foreach (string propertyName in originalValues.PropertyNames)
{
var original = originalValues[propertyName];
var current = currentValues[propertyName];
if (!Equals(original, current))
{
ChangeLog log = new ChangeLog()
{
EntityName = entityName,
PrimaryKeyValue = primaryKey.ToString(),
PropertyName = propertyName,
OldValue = original != null?original.ToString() : null,
NewValue = current != null?current.ToString() : null,
DateChanged = DateTime.Now,
ChangeType = (int)DbChangeType.Edit,
CreatedBy = id,
CreationDate = DateTime.Now
};
ChangeLog.Add(log);
}
}
}
else if (change.State == EntityState.Deleted)
{
var primaryKey = GetPrimaryKeyValue(change);
var item = change.Entity;
var originalValues = this.Entry(item).OriginalValues;
foreach (string propertyName in originalValues.PropertyNames)
{
var original = originalValues[propertyName];
if (original != null)
{
ChangeLog log = new ChangeLog()
{
EntityName = entityName,
PrimaryKeyValue = primaryKey != null?primaryKey.ToString() : null,
PropertyName = propertyName,
OldValue = original != null?original.ToString() : null,
DateChanged = DateTime.Now,
ChangeType = (int)DbChangeType.Delete,
CreatedBy = id,
CreationDate = DateTime.Now
};
ChangeLog.Add(log);
}
}
}
}
}
return(base.SaveChanges());
}
