internal void SetNode(int pre, Node.Node node)
{
if (_nodes == null)
{
throw new ObjectDisposedException("Database");
}
_nodes[pre] = new WeakReference(node);
}
//Converts potential sequences into item lists, while flattening to a single dimension
private static IEnumerable <Item> GetItems(object obj)
{
//It it a Node?
Node.Node node = obj as Node.Node;
if (node != null)
{
return(new[] { node.ANode });
}
//Is it a Database?
Database database = obj as Database;
if (database != null)
{
return(database.Documents.Select(d => d.ANode).Cast <Item>());
}
//Is it enumerable (list, array, etc. - but not a string!)
//This is recursive and results in flattening any nested sequences
IEnumerable enumerable = obj as IEnumerable;
if (!(obj is string) && enumerable != null)
{
return(enumerable.Cast <object>().Select(GetItems).SelectMany(x => x));
}
// Clean up non-.NET values
if (obj is Decimal)
{
obj = new BigDecimal(obj.ToString());
}
else if (obj is DateTime)
{
obj = DatatypeFactory.newInstance().newXMLGregorianCalendar(
((DateTime)obj).ToString("yyyy-MM-ddTHH:mm:ss.fffffffZ"));
}
else if (obj is TimeSpan)
{
obj = DatatypeFactory.newInstance().newDuration(
Convert.ToInt64(((TimeSpan)obj).TotalMilliseconds));
}
else if (obj is XmlQualifiedName)
{
XmlQualifiedName qname = (XmlQualifiedName)obj;
obj = new QName(qname.Namespace, qname.Name);
}
//Get the item
return(new [] { JavaMapping.type(obj).cast(obj, null) });
}
// Only called from the Node.Get() static methods - use those to get new nodes
internal Node.Node GetNode(int pre)
{
if (_nodes == null)
{
throw new ObjectDisposedException("Database");
}
if (_nodes[pre] != null)
{
Node.Node node = (Node.Node)_nodes[pre].Target;
if (node != null)
{
return(node);
}
}
return(null);
}
// Called by Updates.Apply()
internal void Update()
{
if (_nodes == null)
{
throw new ObjectDisposedException("Database");
}
// Grow the nodes cache if needed (but never shrink it)
if (_data.meta.size > _nodes.Length)
{
Array.Resize(ref _nodes, _data.meta.size);
}
// Check validity and reposition nodes
LinkedList <Node.Node> reposition = new LinkedList <Node.Node>();
for (int c = 0; c < _nodes.Length; c++)
{
if (_nodes[c] != null)
{
Node.Node node = (Node.Node)_nodes[c].Target;
if (node != null)
{
if (!node.Validate())
{
// The node is now invalid, remove it from the cache
_nodes[c] = null;
}
else
{
// The node is still valid, but if it moved add it to the reposition list
if (node.Index != c)
{
reposition.AddLast(node);
_nodes[c] = null;
}
}
}
else
{
_nodes[c] = null;
}
}
}
// Reposition any nodes that moved
foreach (Node.Node node in reposition)
{
_nodes[node.Index] = new WeakReference(node);
}
//Raise the Updated event, but avoid recursivly raising it
EventHandler <EventArgs> handler = Updated;
if (handler == null)
{
return;
}
do
{
if (!_inUpdated)
{
_recursiveUpdated = false;
_inUpdated = true;
handler(this, EventArgs.Empty);
_inUpdated = false;
}
else
{
_recursiveUpdated = true;
break;
}
} while (_recursiveUpdated);
}
