private AuditLog GetAuditLogEntry(DbEntityEntry entry)
{
string report = string.Empty;
IModelObject obj = (IModelObject)entry.Entity;
ObjectStateEntry osEntry = null;
((IObjectContextAdapter)this).ObjectContext.ObjectStateManager.TryGetObjectStateEntry(entry.Entity, out osEntry);
if (entry.State == EntityState.Added)
{
report = obj.GetReportHtml();
}
else if (entry.State == EntityState.Modified)
{
var original = entry.OriginalValues.Clone().ToObject();
foreach (var property in GetReportableProperties(entry))
{
var left = property.GetValue(original, null);
var right = property.GetValue(entry.Entity, null);
// If it is not true that the left and right values are the same...
if (!((left == null && right == null) || (left != null && left.Equals(right))))
{
report += string.Format("{0}: {1} => {2}<br/>", property.Name, left, right);
}
}
}
else if (entry.State == EntityState.Deleted)
{
var original = (IModelObject)entry.OriginalValues.Clone().ToObject();
report = original.GetReportHtml();
}
return(new AuditLog
{
Action = entry.State.ToString(),
Comment = report,
Collection = osEntry.EntitySet.Name,
Changed = DateTime.Now,
ObjectId = ((IModelObject)entry.Entity).Id,
User = Thread.CurrentPrincipal.Identity.Name
});
}
public override int SaveChanges()
{
List <RuleViolation> errors = new List <RuleViolation>();
KcsarContext comparisonContext = new KcsarContext();
List <AuditLog> changes = new List <AuditLog>();
// Validate the state of each entity in the context
// before SaveChanges can succeed.
Random rand = new Random();
ObjectContext oc = ((IObjectContextAdapter)this).ObjectContext;
var osm = oc.ObjectStateManager;
oc.DetectChanges();
// Added and modified objects - we can describe the state of the object with
// the information already present.
foreach (ObjectStateEntry entry in
osm.GetObjectStateEntries(
EntityState.Added | EntityState.Modified))
{
// Do Validation
if (entry.Entity is IValidatedEntity)
{
IValidatedEntity validate = (IValidatedEntity)entry.Entity;
if (!validate.Validate())
{
errors.AddRange(validate.Errors);
}
else
{
Document d = entry.Entity as Document;
if (d != null)
{
if (string.IsNullOrWhiteSpace(d.StorePath))
{
string path = string.Empty;
for (int i = 0; i < Document.StorageTreeDepth; i++)
{
path += ((i > 0) ? "\\" : "") + rand.Next(Document.StorageTreeSpan).ToString();
}
if (!System.IO.Directory.Exists(Document.StorageRoot + path))
{
System.IO.Directory.CreateDirectory(Document.StorageRoot + path);
}
path += "\\" + d.Id.ToString();
d.StorePath = path;
}
System.IO.File.WriteAllBytes(Document.StorageRoot + d.StorePath, d.Contents);
}
// New values are valid
if (entry.Entity is IModelObject)
{
IModelObject obj = (IModelObject)entry.Entity;
// Keep track of the change for reporting.
obj.LastChanged = DateTime.Now;
obj.ChangedBy = Thread.CurrentPrincipal.Identity.Name;
IModelObject original = (entry.State == EntityState.Added) ? null : GetOriginalVersion(comparisonContext, entry);
if (original == null)
{
changes.Add(new AuditLog
{
Action = entry.State.ToString(),
Comment = obj.GetReportHtml(),
Collection = entry.EntitySet.Name,
Changed = DateTime.Now,
ObjectId = obj.Id,
User = Thread.CurrentPrincipal.Identity.Name
});
}
else
{
string report = string.Format("<b>{0}</b><br/>", obj);
foreach (PropertyInfo pi in GetReportableProperties(obj.GetType()))
{
object left = pi.GetValue(original, null);
object right = pi.GetValue(obj, null);
if ((left == null && right == null) || (left != null && left.Equals(right)))
{
// report += string.Format("{0}: unchanged<br/>", pi.Name);
}
else
{
report += string.Format("{0}: {1} => {2}<br/>", pi.Name, left, right);
}
}
changes.Add(new AuditLog
{
Action = entry.State.ToString(),
Comment = report,
Collection = entry.EntitySet.Name,
Changed = DateTime.Now,
ObjectId = obj.Id,
User = Thread.CurrentPrincipal.Identity.Name
});
}
}
}
}
}
// Added and modified objects - we need to fetch more data before we can report what the change was in readable form.
foreach (ObjectStateEntry entry in osm.GetObjectStateEntries(EntityState.Deleted))
{
IModelObject modelObject = GetOriginalVersion(comparisonContext, entry);
if (modelObject != null)
{
Document d = modelObject as Document;
if (d != null && !string.IsNullOrWhiteSpace(d.StorePath))
{
string path = Document.StorageRoot + d.StorePath;
System.IO.File.Delete(path);
for (int i = 0; i < Document.StorageTreeDepth; i++)
{
path = System.IO.Path.GetDirectoryName(path);
if (System.IO.Directory.GetDirectories(path).Length + System.IO.Directory.GetFiles(path).Length == 0)
{
System.IO.Directory.Delete(path);
}
}
}
changes.Add(new AuditLog
{
Action = entry.State.ToString(),
Comment = modelObject.GetReportHtml(),
Collection = entry.EntitySet.Name,
Changed = DateTime.Now,
ObjectId = modelObject.Id,
User = Thread.CurrentPrincipal.Identity.Name
});
}
}
if (errors.Count > 0)
{
throw new RuleViolationsException(errors);
}
changes.ForEach(f => this.AuditLog.Add(f));
return(base.SaveChanges());
//if (SavedChanges != null)
//{
// SavedChanges(this, new SavingChangesArgs { Changes = changes.Select(f => f.Comment).ToList() });
//}
}
