private IEnumerator <KeyValuePair <Key, Value> > GetEnumerator()
{
if (NextPageIndex < 0)
{
StopEnumerating = true;
yield break;
}
PageRecord page = ActiveManifest.FindPageForIndex(Level, NextPageIndex++);
if (page == null)
{
StopEnumerating = true;
yield break;
}
var sbt = new SortedBlockTable(Cache, BaseFileName, page.Level, page.Version);
try {
foreach (var pair in sbt.EnumerateFromKey(Cache, StartKey))
{
yield return(pair);
}
} finally {
sbt.Close();
}
}
public TableEnumerator(int level, RazorCache rzrCache, string baseFileName, ManifestImmutable mft, Key key)
{
Cache = rzrCache;
BaseFileName = baseFileName;
ActiveManifest = mft;
StartKey = key;
Level = level;
StopEnumerating = false;
var firstPage = ActiveManifest.FindPageForIndex(level, 0);
if (firstPage != null && key.CompareTo(firstPage.FirstKey) < 0)
{
StartPageIndex = 0;
}
else
{
StartPageIndex = ActiveManifest.FindPageIndexForKey(Level, StartKey);
}
InitEnumerator();
}
