///-------------------------------------------------------------------------------------------------
/// <summary>
/// Ajout d'une valeur.
/// </summary>
/// <exception cref="DuplicateElementException">
/// Thrown when a Duplicate Element error condition occurs.
/// </exception>
/// <param name="node">
/// .
/// </param>
/// <param name="ownerKey">
/// (Optional)
/// </param>
///-------------------------------------------------------------------------------------------------
public void AddNode(GraphNode node, Identity ownerKey = null)
{
DebugContract.Requires(node, "node");
using (var ctx = CreateCommandContext())
{
var currentSlot = new Slot <GraphNode>(node);
_valuesLock.EnterUpgradeableReadLock();
try
{
SlotList slots = null;
if (!_values.TryGetValue(node.Id, out slots))
{
// N'existe pas encore. On rajoute
slots = new SlotList(node.Id, node.NodeType, ownerKey);
_valuesLock.EnterWriteLock();
try
{
_values.Add(node.Id, slots);
}
finally
{
_valuesLock.ExitWriteLock();
}
AddSlot(ctx, slots, currentSlot);
// No vaccum notification here since the element is new
}
else
{
if (SelectSlot(node.Id, ctx) != null)
{
throw new DuplicateElementException(node.Id.ToString());
}
if (_values.TryGetValue(node.Id, out slots))
{
var initialSlot = slots.GetActiveSlot();
AddSlot(ctx, slots, currentSlot);
if (initialSlot != null)
{
initialSlot.CMin = ctx.CommandId;
initialSlot.XMax = ctx.Transaction.Id;
}
NotifyVacuum(slots);
}
}
_trace.WriteTrace(TraceCategory.MemoryStore, "Add {0} - {1}", node.Id, node);
ctx.Complete();
}
finally
{
_statAddValue.Incr();
_valuesLock.ExitUpgradeableReadLock();
}
}
}
private void NotifyVacuum(SlotList slots)
{
#if !DEBUG
if (_jobScheduler != null)
{
_involvedSlots.Enqueue(slots);
_jobScheduler.RequestJob();
}
#endif
}
private void AddSlot(CommandContext ctx, SlotList slots, Slot <GraphNode> v)
{
DebugContract.Requires(ctx, "ctx");
DebugContract.Requires(slots, "slots");
DebugContract.Requires(v, "v");
v.XMin = ctx.Transaction.Id;
v.XMax = null;
v.CMin = ctx.CommandId;
slots.Add(v);
}
internal SlotList(SlotList clone)
{
DebugContract.Requires(clone, "clone");
_ownerKey = clone._ownerKey;
_elementType = clone._elementType;
Id = clone.Id;
_ownerKey = clone._ownerKey;
_slots = new List <ISlot>(Length + 2);
_slots.AddRange(clone._slots.Where(s => s.Id > 0));
Length = _slots.Count;
}
///-------------------------------------------------------------------------------------------------
/// <summary>
/// Mise à jour d'une valeur.
/// </summary>
/// <exception cref="Exception">
/// Thrown when an exception error condition occurs.
/// </exception>
/// <param name="node">
/// .
/// </param>
///-------------------------------------------------------------------------------------------------
public void UpdateNode(GraphNode node)
{
DebugContract.Requires(node);
using (var ctx = CreateCommandContext())
{
try
{
// Test existence tuple ?
SlotList slots = null;
_valuesLock.EnterReadLock();
try
{
_values.TryGetValue(node.Id, out slots);
}
finally
{
_valuesLock.ExitReadLock();
}
if (slots != null)
{
var currentSlot = slots.GetActiveSlot();
var newSlot = new Slot <GraphNode>(node);
AddSlot(ctx, slots, newSlot);
if (currentSlot != null)
{
currentSlot.CMin = ctx.CommandId;
currentSlot.XMax = ctx.Transaction.Id;
}
NotifyVacuum(slots);
Debug.Assert(slots.Count(e => e.XMax == null) == 1);
_trace.WriteTrace(TraceCategory.MemoryStore, "Update {0} - {1}", node.Id, node);
}
else
{
throw new HypergraphException(ExceptionMessages.NotFound + node.Id);
}
}
finally
{
// On valide la transaction dans tous les cas pour qu'elle soit purgée par le vacuum
ctx.Complete();
_statUpdateValue.Incr();
}
}
}
