public DatastoreResults <T> Query(DatastoreQuery <T> q)
{
var results = new BlockingCollection <DatastoreResult <T> >();
Task.Factory.StartNew(() =>
{
foreach (var item in new DirectoryInfo(_path).EnumerateFiles("*" + ObjectKeySuffix, SearchOption.AllDirectories)
.Select(f =>
{
var path = f.FullName;
if (path.StartsWith(_path))
{
path = path.Substring(_path.Length);
}
if (Path.IsPathRooted(path))
{
path = path.TrimStart(Path.DirectorySeparatorChar);
}
var key = new DatastoreKey(path.Substring(0, path.IndexOf(ObjectKeySuffix)));
var entry = new DatastoreEntry <T>(key, default(T));
return(new DatastoreResult <T>(entry));
}))
{
if (!results.TryAdd(item, Timeout.Infinite))
{
break;
}
}
})
.ContinueWith(_ => results.CompleteAdding());
return(DatastoreResults <T> .WithCollection(q, results).NaiveQueryApply());
}
public DatastoreResults <byte[]> Query(DatastoreQuery <byte[]> q)
{
if ((!string.IsNullOrEmpty(q.Prefix) && q.Prefix != "/") ||
q.QueryFilters.Length > 0 ||
q.QueryOrders.Length > 0 ||
q.Limit > 0 ||
q.Offset > 0 ||
!q.KeysOnly)
{
throw new Exception("flatfs only supports listing all keys in random order");
}
var reschan = new BlockingCollection <DatastoreResult <byte[]> >(DatastoreQuery <byte[]> .KeysOnlyBufferSize);
Task.Run(() => WalkTopLevel(_path, reschan))
.ContinueWith(_ => reschan.CompleteAdding());
return(DatastoreResults <byte[]> .WithCollection(q, reschan));
}
