// Depending on whether we're to-be-inserted or were retrieved from a query,
// returns the appropriate StoreCtx from the PrincipalContext that we should use for
// all StoreCtx-related operations.
// Returns null if no context has been set yet.
internal StoreCtx GetStoreCtxToUse()
{
if (_ctx == null)
{
Debug.Assert(this.unpersisted == true);
return(null);
}
if (this.unpersisted)
{
return(_ctx.ContextForType(this.GetType()));
}
else
{
return(_ctx.QueryCtx);
}
}
public void Save(PrincipalContext context)
{
GlobalDebug.WriteLineIf(GlobalDebug.Info, "Principal", "Entering Save(Context)");
// Make sure we're not disposed or deleted.
CheckDisposedOrDeleted();
// Make sure we're not a fake principal
CheckFakePrincipal();
// We must have a PrincipalContext to save into. This should always be the case, unless we're unpersisted
// and they never set a PrincipalContext.
if (context == null)
{
Debug.Assert(this.unpersisted == true);
throw new InvalidOperationException(SR.NullArguments);
}
if (context.ContextType == ContextType.Machine || _ctx.ContextType == ContextType.Machine)
{
throw new InvalidOperationException(SR.SaveToNotSupportedAgainstMachineStore);
}
// If the user is trying to save to the same context we are already set to then just save the changes
if (context == _ctx)
{
Save();
return;
}
// If we already have a context set on this object then make sure the new
// context is of the same type.
if (context.ContextType != _ctx.ContextType)
{
Debug.Assert(this.unpersisted == true);
throw new InvalidOperationException(SR.SaveToMustHaveSamecontextType);
}
StoreCtx originalStoreCtx = GetStoreCtxToUse();
_ctx = context;
// Call the appropriate operation depending on whether this is an insert or update
StoreCtx newStoreCtx = GetStoreCtxToUse();
Debug.Assert(newStoreCtx != null); // since we know this.ctx isn't null
Debug.Assert(originalStoreCtx != null); // since we know this.ctx isn't null
if (this.unpersisted)
{
// We have an unpersisted principal so we just want to create a principal in the new store.
GlobalDebug.WriteLineIf(GlobalDebug.Info, "Principal", "Save(context): inserting new principal of type {0} using {1}", this.GetType(), newStoreCtx.GetType());
Debug.Assert(newStoreCtx == _ctx.ContextForType(this.GetType()));
newStoreCtx.Insert(this);
this.unpersisted = false; // once we persist, we're no longer in the unpersisted state
}
else
{
// We have a principal that already exists. We need to move it to the new store.
GlobalDebug.WriteLineIf(GlobalDebug.Info, "Principal", "Save(context): Moving principal of type {0} using {1}", this.GetType(), newStoreCtx.GetType());
// we are now saving to a new store so this principal is unpersisted.
this.unpersisted = true;
// If the user has modified the name save away the current name so
// if the move succeeds and the update fails we will move the item back to the original
// store with the original name.
bool nameModified = _nameChanged == LoadState.Changed;
string previousName = null;
if (nameModified)
{
string newName = _name;
_ctx.QueryCtx.Load(this, PropertyNames.PrincipalName);
previousName = _name;
this.Name = newName;
}
newStoreCtx.Move(originalStoreCtx, this);
try
{
this.unpersisted = false; // once we persist, we're no longer in the unpersisted state
newStoreCtx.Update(this);
}
catch (System.SystemException e)
{
try
{
GlobalDebug.WriteLineIf(GlobalDebug.Error, "Principal", "Save(context):, Update Failed (attempting to move back) Exception {0} ", e.Message);
if (nameModified)
{
this.Name = previousName;
}
originalStoreCtx.Move(newStoreCtx, this);
GlobalDebug.WriteLineIf(GlobalDebug.Info, "Principal", "Move back succeeded");
}
catch (System.SystemException deleteFail)
{
// The move back failed. Just continue we will throw the original exception below.
GlobalDebug.WriteLineIf(GlobalDebug.Error, "Principal", "Save(context):, Move back Failed {0} ", deleteFail.Message);
}
if (e is System.Runtime.InteropServices.COMException)
{
throw ExceptionHelper.GetExceptionFromCOMException((System.Runtime.InteropServices.COMException)e);
}
else
{
throw;
}
}
}
_ctx.QueryCtx = newStoreCtx; // so Updates go to the right StoreCtx
}
