/// <summary>
/// Merges the arrays into the target index and clear inner collection.
/// </summary>
/// <param name="targetSnapshot">The target snapshot.</param>
/// <param name="targetIndex">Index of the target.</param>
/// <param name="operation">The operation.</param>
public void MergeArraysAndClear(Snapshot targetSnapshot, MemoryIndex targetIndex, MergeOperation operation)
{
if (hasArray)
{
if (targetArray == null)
{
targetArray = targetSnapshot.CreateArray();
}
IArrayDescriptor targetArrayDescriptor;
if (!writeableTargetStructure.TryGetDescriptor(targetArray, out targetArrayDescriptor))
{
// Target does not contain array - create and add new in target snapshot
targetArrayDescriptor = worker.Factories.StructuralContainersFactories.ArrayDescriptorFactory.CreateArrayDescriptor(writeableTargetStructure, targetArray, targetIndex);
writeableTargetStructure.SetDescriptor(targetArray, targetArrayDescriptor);
writeableTargetStructure.NewIndex(targetArrayDescriptor.UnknownIndex);
writeableTargetStructure.SetArray(targetIndex, targetArray);
}
// Create context and merge descriptors
var arrayContext = new ArrayTargetContainerContext(writeableTargetStructure, targetArrayDescriptor);
worker.CreateAndEnqueueOperations(arrayContext, operation.TreeNode, sourceArrays, arrayAlwaysDefined && !operation.IsUndefined);
// Update current descriptor when changed
IArrayDescriptor currentDescriptor = arrayContext.getCurrentDescriptor();
if (currentDescriptor != targetArrayDescriptor)
{
writeableTargetStructure.SetDescriptor(targetArray, currentDescriptor);
}
sourceArrays.Clear();
hasArray = false;
targetArray = null;
}
else if (targetArray != null)
{
worker.DeleteArray(targetIndex, targetArray);
targetArray = null;
}
arrayAlwaysDefined = true;
}