/// <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);
}
