///////////////////////////////////////////////////////////////////////
public ReturnCode MoveAllChildren(
INamespace @namespace,
ref Result error
)
{
CheckDisposed();
if (@namespace == null)
{
error = "invalid namespace";
return(ReturnCode.Error);
}
if (children == null)
{
error = String.Format(
"children not available in namespace \"{0}\"",
GetDisplayName());
return(ReturnCode.Error);
}
//
// NOTE: Grab all the children [that need to be moved] from the
// existing namespace.
//
IEnumerable <INamespace> newChildren = @namespace.GetAllChildren();
if (newChildren == null)
{
return(ReturnCode.Ok); /* NOTE: Ok, no children. */
}
//
// NOTE: Pass 1: Verify that no duplicate children exist.
//
foreach (INamespace child in newChildren)
{
if (child == null)
{
continue;
}
if (children.ContainsKey(child.Name))
{
error = String.Format(
"can't add \"{0}\": namespace already exists",
child.Name);
return(ReturnCode.Error);
}
}
//
// NOTE: Pass 2: Add all new children to our collection.
//
bool reAddThis = false;
foreach (INamespace child in newChildren)
{
if (child == null)
{
continue;
}
//
// BUGFIX: We cannot be a child of ourself. Therefore, we
// need to re-add ourself to the original namespace
// after clearing all the other children from it.
//
if (Object.ReferenceEquals(child, this))
{
reAddThis = true;
continue;
}
children.Add(child.Name, child);
child.Parent = this;
}
//
// NOTE: Next, clear the children from the source namespace.
//
@namespace.ClearAllChildren();
//
// NOTE: Finally, if necessary, re-add this namespace to the
// original one.
//
if (reAddThis &&
(@namespace.AddChild(this, ref error) != ReturnCode.Ok))
{
return(ReturnCode.Error);
}
return(ReturnCode.Ok);
}