private void WriteAudit(object entity, object[] oldState, IEntityPersister persister, object[] state, IEventSource eventSource, object id)
{
IStatelessSession session = null;
ITransaction transaction = null;
try
{
if (entity is AuditLogEntry)
{
return;
}
var entityFullName = entity.GetType().FullName;
if (oldState == null)
{
//Hack to overcome bad saving practice!
oldState = Enumerable.Repeat(UnknownString as object, state.Length).ToArray();
//throw new ArgumentNullException("No old state available for entity type '" + entityFullName + "'. Make sure you're loading it into Session before modifying and saving it.");
}
bool insert = oldState.Length < 1;
//ISessionImplementor implementor = eventSource.GetSession(EntityMode.Poco).SessionFactory.OpenStatelessSession().GetSessionImplementation();
int[] dirtyFieldIndexes = insert ? Enumerable.Range(0, state.Length).ToArray() : persister.FindDirty(state, oldState, entity, eventSource);
var auditEntryType = insert ? "Insert" : "Update";
string username = Environment.UserName;
var haveModifiedBy = entity as IHaveModifiedBy;
if (haveModifiedBy != null)
{
username = haveModifiedBy.LastModifiedBy;
}
session = eventSource.GetSession(EntityMode.Poco).SessionFactory.OpenStatelessSession();
session.BeginTransaction();
foreach (var dirtyFieldIndex in dirtyFieldIndexes)
{
string oldValue = NoValueString;
if (!insert)
{
oldValue = GetStringValueFromStateArray(oldState, dirtyFieldIndex);
}
var newValue = GetStringValueFromStateArray(state, dirtyFieldIndex);
var propertyName = persister.PropertyNames[dirtyFieldIndex];
if (oldValue == newValue || propertyName == "LastModifiedBy" || propertyName == "LastModifiedDate")
{
continue;
}
session.Insert(new AuditLogEntry
{
EntityShortName = entity.GetType().Name,
FieldName = propertyName,
OldValue = oldValue,
NewValue = newValue,
Username = username,
EntityId = (int)id,
AuditEntryType = auditEntryType,
Timestamp = DateTime.Now
});
}
session.Transaction.Commit();
session.Close();
}
catch (Exception)
{
//Don't let audit log make us fail.
//if (session != null)
//{
// if (session.Transaction.IsActive) session.Transaction.Rollback();
// session.Close();
// session = null;
//}
//if (eventSource != null)
//{
// //if (transaction != null && transaction.IsActive) eventSource.Transaction.Rollback();
// //if (eventSource.Transaction.IsActive) eventSource.Transaction.Rollback();
// //eventSource.Close();
//}
}
}