private IEnumerable <BsonDocument> GetList(uint pageID, string indexName, TransactionService transaction, Snapshot snapshot)
{
if (pageID == uint.MaxValue)
{
yield break;
}
var page = snapshot.GetPage <BasePage>(pageID);
while (page != null)
{
_collections.TryGetValue(page.ColID, out var collection);
yield return(new BsonDocument
{
["pageID"] = (int)page.PageID,
["pageType"] = page.PageType.ToString(),
["slot"] = (int)page.PageListSlot,
["collection"] = collection,
["index"] = indexName,
["freeBytes"] = page.FreeBytes,
["itemsCount"] = (int)page.ItemsCount
});
if (page.NextPageID == uint.MaxValue)
{
break;
}
transaction.Safepoint();
page = snapshot.GetPage <BasePage>(page.NextPageID);
}
}
// load documents from document loader
protected async IAsyncEnumerable <BsonDocument> LoadDocument(IAsyncEnumerable <IndexNode> nodes)
{
await foreach (var node in nodes)
{
yield return(await _lookup.Load(node));
// check if transaction all full of pages to clear before continue
await _transaction.Safepoint();
}
}