/// <summary>
/// Creates the snapshot contexts.
/// </summary>
private void createSnapshotContexts()
{
foreach (Snapshot sourceSnapshot in sourceSnapshots)
{
SnapshotContext context = new SnapshotContext(sourceSnapshot);
context.SourceStructure = sourceSnapshot.Structure.Readonly;
context.SourceData = sourceSnapshot.CurrentData.Readonly;
context.CallLevel = sourceSnapshot.CallLevel;
context.ChangedIndexesTree = new MemoryIndexTree();
snapshotContexts.Add(context);
}
}
/// <summary>
/// Collects the structure changes and find ancestor.
/// </summary>
/// <returns></returns>
private IReadonlyChangeTracker <IReadOnlySnapshotStructure> collectStructureChangesAndFindAncestor()
{
SnapshotContext ancestorContext = snapshotContexts[0];
IReadonlyChangeTracker <IReadOnlySnapshotStructure> ancestor = ancestorContext.SourceStructure.ReadonlyChangeTracker;
List <MemoryIndexTree> changes = new List <MemoryIndexTree>();
changes.Add(snapshotContexts[0].ChangedIndexesTree);
for (int x = 1; x < snapshotContexts.Count; x++)
{
SnapshotContext context = snapshotContexts[x];
MemoryIndexTree currentChanges = context.ChangedIndexesTree;
changes.Add(currentChanges);
ancestor = getFirstCommonAncestor(context.SourceStructure.ReadonlyChangeTracker, ancestor, currentChanges, changes);
}
return(ancestor);
}
/// <summary>
/// Processes the merge operation.
/// </summary>
/// <param name="operation">The operation.</param>
private void processMergeOperation(MergeOperation operation)
{
MemoryIndex targetIndex = operation.TargetIndex;
var targetIndexDatasources = targetSnapshot.MergeInfo.GetOrCreateDatasourcesContaier(targetIndex);
// Iterate sources
foreach (MergeOperationContext operationContext in operation.Indexes)
{
// Retreive source context and definition
MemoryIndex sourceIndex = operationContext.Index;
SnapshotContext context = operationContext.SnapshotContext;
IIndexDefinition sourceDefinition = context.SourceStructure.GetIndexDefinition(sourceIndex);
// Collect array and aliases data
arrayWorker.collectSourceArray(targetIndex, operation, operationContext, sourceDefinition.Array);
aliasWorker.collectSourceAliases(sourceDefinition.Aliases);
objectWorker.collectSourceObjects(sourceDefinition.Objects);
// Store datasource for data and info merging
targetIndexDatasources.SetDatasource(context.SourceSnapshot, sourceIndex);
}
IIndexDefinition targetDefinition;
if (targetStructure.TryGetIndexDefinition(targetIndex, out targetDefinition))
{
// Index is set in target snapshot
if (targetDefinition.Array != null)
{
arrayWorker.SetTargetArray(targetDefinition.Array);
}
}
else
{
// Index is not set in target snapshot - create it
writeableTargetStructure.NewIndex(targetIndex);
}
aliasWorker.MergeAliasesAndClear(targetIndex, operation);
arrayWorker.MergeArraysAndClear(targetSnapshot, targetIndex, operation);
objectWorker.MergeObjectsAndClear(targetIndex);
}
/// <summary>
/// Collects the call structure changes.
/// </summary>
/// <param name="callSnapshot">The call snapshot.</param>
private void collectCallStructureChanges(Snapshot callSnapshot)
{
List <MemoryIndexTree> changes = new List <MemoryIndexTree>();
var ancestor = callSnapshot.Structure.Readonly.ReadonlyChangeTracker;
for (int x = 0; x < snapshotContexts.Count; x++)
{
SnapshotContext context = snapshotContexts[x];
MemoryIndexTree currentChanges = context.ChangedIndexesTree;
changes.Add(currentChanges);
collectSingleFunctionChanges(callSnapshot, context.SourceStructure.ReadonlyChangeTracker, currentChanges, changes);
}
if (targetSnapshot.StructureCallChanges != null)
{
CollectionMemoryUtils.AddAll(this.changeTree, targetSnapshot.StructureCallChanges);
}
targetSnapshot.StructureCallChanges = changeTree.StoredIndexes;
}
/// <summary>
/// Initializes a new instance of the <see cref="ContainerContext"/> class.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="indexContainer">The index container.</param>
/// <param name="operationType">Type of the operation.</param>
public ContainerContext(SnapshotContext context, IReadonlyIndexContainer indexContainer, MergeOperationType operationType = MergeOperationType.ChangedOnly)
{
this.SnapshotContext = context;
this.IndexContainer = indexContainer;
this.OperationType = operationType;
}
/// <summary>
/// Initializes a new instance of the <see cref="MergeOperationContext"/> class.
/// </summary>
/// <param name="index">The index.</param>
/// <param name="snapshotContext">The snapshot context.</param>
/// <param name="operationType">Type of the operation.</param>
public MergeOperationContext(MemoryIndex index, SnapshotContext snapshotContext, MergeOperationType operationType = MergeOperationType.ChangedOnly)
{
this.Index = index;
this.SnapshotContext = snapshotContext;
this.OperationType = operationType;
}
