private void WriteRelationships(AuditEntryState state)
{
var properties = state.EntityType.NavigationProperties;
if (properties.Count == 0)
{
return;
}
var modifiedMembers = state.ObjectStateEntry
.GetModifiedProperties()
.ToList();
var type = state.ObjectType;
var currentValues = state.IsDeleted
? state.ObjectStateEntry.OriginalValues
: state.ObjectStateEntry.CurrentValues;
var originalValues = state.IsModified
? state.ObjectStateEntry.OriginalValues
: null;
foreach (NavigationProperty navigationProperty in properties)
{
if (navigationProperty.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many ||
navigationProperty.FromEndMember.RelationshipMultiplicity != RelationshipMultiplicity.Many)
{
continue;
}
string name = navigationProperty.Name;
if (configuration.IsNotAudited(type, name))
{
continue;
}
var accessor = state.EntityAccessor.Find(name);
IMemberAccessor displayMember = configuration.GetDisplayMember(accessor.MemberType);
if (displayMember == null)
{
continue; // no display property, skip
}
bool isModified = IsModifed(navigationProperty, modifiedMembers);
if (state.IsModified && !isModified)
{
continue; // this means the property was not changed, skip it
}
bool isLoaded = IsLoaded(state, navigationProperty, accessor);
if (!isLoaded)
{
continue;
}
var auditProperty = new AuditProperty();
try
{
auditProperty.Name = name;
auditProperty.Type = accessor.MemberType.FullName;
auditProperty.IsRelationship = true;
//auditProperty.ForeignKey = GetForeignKey(navigationProperty);
object currentValue = null;
if (isLoaded)
{
// get value directly from instance to save db call
object valueInstance = accessor.GetValue(state.Entity);
if (valueInstance != null)
{
currentValue = displayMember.GetValue(valueInstance);
}
}
else
{
// get value from db
currentValue = GetDisplayValue(state, navigationProperty, displayMember, currentValues);
}
// format
//currentValue = FormatValue(state, name, currentValue);
if (!state.IsModified && currentValue == null)
{
continue; // skip null value
}
switch (state.AuditEntity.Action)
{
case ObjectStateType.Added:
auditProperty.Current = currentValue;
break;
case ObjectStateType.Modified:
auditProperty.Current = currentValue ?? _nullText;
object originalValue = GetDisplayValue(state, navigationProperty, displayMember, originalValues);
//originalValue = FormatValue(state, name, originalValue);
auditProperty.Original = originalValue;
break;
case ObjectStateType.Deleted:
auditProperty.Original = currentValue;
break;
}
}
catch (Exception ex)
{
Trace.TraceError(ex.Message);
if (state.IsDeleted)
{
auditProperty.Original = _errorText;
}
else
{
auditProperty.Current = _errorText;
}
}
state.AuditEntity.Properties.Add(auditProperty);
}
}
private void WriteProperties(AuditEntryState state)
{
var properties = state.EntityType.Properties;
if (properties == null)
{
return;
}
var modifiedMembers = state.ObjectStateEntry
.GetModifiedProperties()
.ToList();
var type = state.ObjectType;
var currentValues = state.IsDeleted
? state.ObjectStateEntry.OriginalValues
: state.ObjectStateEntry.CurrentValues;
var originalValues = state.IsModified
? state.ObjectStateEntry.OriginalValues
: null;
foreach (EdmProperty edmProperty in properties)
{
string name = edmProperty.Name;
if (configuration.IsNotAudited(type, name))
{
continue;
}
bool isModified = modifiedMembers.Any(m => m == name);
if (state.IsModified && !isModified)
{
continue; // this means the property was not changed, skip it
}
var auditProperty = new AuditProperty();
try
{
auditProperty.Name = name;
auditProperty.Type = GetType(edmProperty);
var currentValue = GetValue(currentValues, name);
//currentValue = FormatValue(state, name, currentValue);
if (!state.IsModified && currentValue == null)
{
continue; // ignore null properties?
}
switch (state.AuditEntity.Action)
{
case ObjectStateType.Added:
auditProperty.Current = currentValue;
break;
case ObjectStateType.Modified:
auditProperty.Current = currentValue;
if (originalValues != null)
{
object originalValue = GetValue(originalValues, edmProperty.Name);
//originalValue = FormatValue(state, name, originalValue);
auditProperty.Original = originalValue;
}
break;
case ObjectStateType.Deleted:
auditProperty.Original = currentValue;
break;
}
}
catch (Exception ex)
{
Trace.TraceError(ex.Message);
if (state.IsDeleted)
{
auditProperty.Original = _errorText;
}
else
{
auditProperty.Current = _errorText;
}
}
state.AuditEntity.Properties.Add(auditProperty);
} // foreach property
}