public void ProcessEntry(DbEntityEntry entry)
{
var historyEntry = DbChangeHistoryEntry.FromDbEntityEntry(entry);
if (historyEntry != null)
{
if (_entries == null)
{
_entries = new List <DbChangeHistoryEntry>();
}
_entries.Add(historyEntry);
}
}
public static DbChangeHistoryEntry FromDbEntityEntry(DbEntityEntry entry)
{
if (entry.State != EntityState.Added &&
entry.State != EntityState.Modified &&
entry.State != EntityState.Deleted)
{
return(null);
}
if (!(entry.Entity is IChangeHistoryEntity))
{
return(null);
}
var result = new DbChangeHistoryEntry
{
_entry = entry,
_entity = entry.Entity,
_state = entry.State,
_properties = new Dictionary <string, DbChangeHistoryEntryProperty>()
};
var propertyNames = entry.State == EntityState.Deleted
? entry.OriginalValues.PropertyNames
: entry.CurrentValues.PropertyNames;
foreach (string propName in propertyNames)
{
var entryProperty = entry.Property(propName);
var historyProperty = new DbChangeHistoryEntryProperty {
Name = propName
};
if (entry.State != EntityState.Added)
{
historyProperty.OldValue = entryProperty.OriginalValue;
}
if (entry.State != EntityState.Deleted)
{
historyProperty.NewValue = entryProperty.CurrentValue;
}
result._properties.Add(propName, historyProperty);
}
return(result);
}