/// <summary>
/// Stores collected objects into the structure and clear inner container.
/// </summary>
/// <param name="targetIndex">Index of the target.</param>
public void MergeObjectsAndClear(MemoryIndex targetIndex)
{
if (hasObjects)
{
IObjectValueContainer objectsContainer = worker.Factories.StructuralContainersFactories.ObjectValueContainerFactory.CreateObjectValueContainer(writeableTargetStructure, objectValues);
writeableTargetStructure.SetObjects(targetIndex, objectsContainer);
hasObjects = false;
objectValues.Clear();
}
}
/// <summary>
/// Processes single merge operation - prepares all valid values and alias informations from the source indexes.
/// When the source indexes contains some array values prepares operation for every descendant index and merge the
/// array into one which will be stored in the target memory entry.
/// </summary>
/// <param name="operation">The operation.</param>
private void processMergeOperation(MergeOperation operation)
{
CollectComposedValuesVisitor visitor = new CollectComposedValuesVisitor();
ReferenceCollector references = new ReferenceCollector();
// Collect all data from source indexes
foreach (var operationData in operation.Indexes)
{
MemoryIndex index = operationData.Item1;
Snapshot snapshot = operationData.Item2;
MemoryEntry entry = SnapshotDataUtils.GetMemoryEntry(snapshot, snapshot.CurrentData.Readonly, index);
visitor.VisitMemoryEntry(entry);
IMemoryAlias aliases;
if (snapshot.Structure.Readonly.TryGetAliases(index, out aliases))
{
references.CollectMust(aliases.MustAliases, targetSnapshotCallLevel);
references.CollectMay(aliases.MayAliases, targetSnapshotCallLevel);
}
else
{
references.InvalidateMust();
}
}
references.SetAliases(operation.TargetIndex, this, !operation.IsUndefined);
//repares the set of values - array values are traversed
HashSet <Value> values = getValues(operation, visitor);
// If some index in operation can be undefined add undefined value into result
if (operation.IsUndefined)
{
values.Add(targetSnapshot.UndefinedValue);
}
Data.Writeable.SetMemoryEntry(operation.TargetIndex, targetSnapshot.CreateMemoryEntry(values));
writeableStrucure.SetObjects(operation.TargetIndex, Factories.StructuralContainersFactories.ObjectValueContainerFactory.CreateObjectValueContainer(writeableStrucure, visitor.Objects));
}
