/// <summary>
/// List all indexes inside a collection
/// </summary>
public IEnumerable<BsonDocument> GetIndexes(string colName, bool stats = false)
{
var col = this.GetCollectionPage(colName, false);
if (col == null) yield break;
foreach (var index in col.GetIndexes(true))
{
var doc = new BsonDocument()
.Add("slot", index.Slot)
.Add("field", index.Field)
.Add("options", new BsonDocument()
.Add("unique", index.Options.Unique)
.Add("ignoreCase", index.Options.IgnoreCase)
.Add("removeAccents", index.Options.RemoveAccents)
.Add("trimWhitespace", index.Options.TrimWhitespace)
.Add("emptyStringToNull", index.Options.EmptyStringToNull)
);
if (stats)
{
_cache.CheckPoint();
var pages = _indexer.FindAll(index, Query.Ascending).GroupBy(x => x.Page.PageID).Count();
// this command can be consume too many memory!! has no CheckPoint on loop
var keySize = pages == 0 ? 0 : _indexer.FindAll(index, Query.Ascending).Average(x => x.KeyLength);
doc.Add("stats", new BsonDocument()
.Add("pages", pages)
.Add("allocated", BasePage.GetSizeOfPages(pages))
.Add("keyAverageSize", (int)keySize)
);
}
yield return doc;
}
}